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Lasica N, Siddiq T, Hessler R, Arnautovic KI. Cranio-Orbital Pretemporal Approach for Microsurgical Resection of Hypothalamic Rosette Forming Glioneuronal Tumor with Reversal of Preoperative Blindness: 2-Dimensional Operative Video. World Neurosurg 2024; 189:209-210. [PMID: 38908684 DOI: 10.1016/j.wneu.2024.06.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/14/2024] [Accepted: 06/15/2024] [Indexed: 06/24/2024]
Abstract
The hypothalamic region is susceptible to involvement of several processes.1 Lesions in this region remain challenging for surgical access and treatment. Strategies include both endoscopic and microsurgical approaches.2 A cranio-orbital approach with extradural clinoidectomy and optic canal unroofing provides the necessary corridor to visualize and decompress the optic nerve/chiasm and remains an important tool in achieving complete tumor resection with favorable functional and visual outcomes.3-12 Endoscope assistance in transcranial surgery is well established, used to provide direct visualization of hidden adjacent tissues.13 A 25-year-old woman presented with headache and progressive visual loss to blindness (hand waving and light perception) on admission. Magnetic resonance imaging demonstrated a 28-mm-diameter tumor in the hypothalamic region with no significant postcontrast enhancement. She underwent right cranio-orbital craniotomy, extradural anterior clinoidectomy, and optic canal unroofing with a 2-mm high-speed diamond drill and copious irrigation. After ipsilateral falciform ligament release, the tumor capsule was coagulated, sharply opened, and resected in a piecemeal fashion. Endoscopic assistance warranted the removal of hidden parts and confirmed tumor removal. Histopathology and next-generation sequencing confirmed the diagnosis of rosette-forming glioneural tumor. Follow-up revealed gross total tumor removal on magnetic resonance imaging and complete recovery of visual function as per ophthalmologist examination. Rosette-forming glioneural tumors are considered rare and classified as World Health Organization grade I tumors usually found in the fourth ventricle.14 To our knowledge, we present the first operative video (Video 1) demonstrating the removal of rosette-forming glioneural tumor in the hypothalamic region with endoscopic assistance.
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Affiliation(s)
- Nebojsa Lasica
- Clinic of Neurosurgery, University Clinical Center of Vojvodina, Novi Sad, Serbia; Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Talal Siddiq
- Semmes-Murphey Clinic and Department of Neurosurgery, University of Tennessee, Memphis, Tennessee, USA
| | - Richard Hessler
- Department of Pathology, Erlanger Health System, Chattanooga, Tennessee, USA
| | - Kenan I Arnautovic
- Semmes-Murphey Clinic and Department of Neurosurgery, University of Tennessee, Memphis, Tennessee, USA.
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2
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Wang YF, Yang YL, Yang SH, Peng SSF. Prognostic implications of distinctive imaging characteristics in primary intracranial germ cell tumors: A retrospective analysis. J Formos Med Assoc 2024:S0929-6646(24)00252-3. [PMID: 38821737 DOI: 10.1016/j.jfma.2024.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/03/2024] [Accepted: 05/22/2024] [Indexed: 06/02/2024] Open
Abstract
PURPOSE Primary central nervous system (CNS) germ cell tumors (GCTs) are rare brain tumors that encompass two subtypes: germinomas and non-germinomatous germ cell tumors (NGGCTs), NGGCTs have less favorable outcome and require multi-modality treatment. Biopsy is recommended for disease diagnosis, the specimen may not adequately reflect the entire tumor. This study aimed to assess distinct imaging characteristics to differentiate between GCT subgroups and to identify possible initial image and subgroup features that influence survival. METHOD This retrospective study, conducted from January 2006 to March 2023, analyzed patient data and MRI findings of primary CNS GCTs. It evaluated tumor characteristics including cysts, seeding, multifocality, and hemorrhage. Tumor volumes and apparent diffusion coefficient (ADC) values of both tumoral and normal-appearing contralateral white matter were measured. These factors were correlated with overall and 5-year survival rates. RESULTS This study included 51 participants with CGTs, comprising 19 germinoma and 32 NGGCTs cases. GCTs with hemorrhage had worse overall (P = 0.03) and 5-year (P = 0.01) survival rates. No survival difference between germinoma and non-hemorrhagic NGGCT. NGGCTs were more likely to bleed (P < 0.001) than germ cell tumor, especially those with choriocarcinoma or yolk sac tumor components (P = 0.001). The ADC ratios of germinomas were significantly lower than those of NGGCTs (P = 0.03 for whole tumor; P < 0.01 or solid part), The ADC ratios of choriocarcinoma were also lower than mixed tumor (P = 0.01; P = 0.02). CONCLUSION Hemorrhage indicates worse prognosis. Intratumoral hemorrhage and ADC ratios differentiate germinoma from NGGCTs. Larger cohorts and advanced MR techniques are needed for future study.
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Affiliation(s)
- Yu-Fen Wang
- Department of Medical Imaging, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei City, 100, Taiwan, ROC.
| | - Yung-Li Yang
- Division of Pediatric Hematology and Oncology, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei City, 100, Taiwan, ROC.
| | - Shih-Hung Yang
- Division of Neurosurgery, Department of Surgery, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei City, 100, Taiwan, ROC.
| | - Steven Shinn-Forng Peng
- Department of Medical Imaging, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei City, 100, Taiwan, ROC.
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Sanvito F, Pichiecchio A, Paoletti M, Rebella G, Resaz M, Benedetti L, Massa F, Morbelli S, Caverzasi E, Asteggiano C, Businaro P, Masciocchi S, Castellan L, Franciotta D, Gastaldi M, Roccatagliata L. Autoimmune encephalitis: what the radiologist needs to know. Neuroradiology 2024; 66:653-675. [PMID: 38507081 PMCID: PMC11031487 DOI: 10.1007/s00234-024-03318-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 02/20/2024] [Indexed: 03/22/2024]
Abstract
Autoimmune encephalitis is a relatively novel nosological entity characterized by an immune-mediated damage of the central nervous system. While originally described as a paraneoplastic inflammatory phenomenon affecting limbic structures, numerous instances of non-paraneoplastic pathogenesis, as well as extra-limbic involvement, have been characterized. Given the wide spectrum of insidious clinical presentations ranging from cognitive impairment to psychiatric symptoms or seizures, it is crucial to raise awareness about this disease category. In fact, an early diagnosis can be dramatically beneficial for the prognosis both to achieve an early therapeutic intervention and to detect a potential underlying malignancy. In this scenario, the radiologist can be the first to pose the hypothesis of autoimmune encephalitis and refer the patient to a comprehensive diagnostic work-up - including clinical, serological, and neurophysiological assessments.In this article, we illustrate the main radiological characteristics of autoimmune encephalitis and its subtypes, including the typical limbic presentation, the features of extra-limbic involvement, and also peculiar imaging findings. In addition, we review the most relevant alternative diagnoses that should be considered, ranging from other encephalitides to neoplasms, vascular conditions, and post-seizure alterations. Finally, we discuss the most appropriate imaging diagnostic work-up, also proposing a suggested MRI protocol.
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Affiliation(s)
- Francesco Sanvito
- Unit of Radiology, Department of Clinical, Surgical, Diagnostic, and Paediatric Sciences, University of Pavia, Viale Camillo Golgi, 19, 27100, Pavia, Italy.
- UCLA Brain Tumor Imaging Laboratory (BTIL), Center for Computer Vision and Imaging Biomarkers, University of California Los Angeles, Los Angeles, CA, USA.
- Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
| | - Anna Pichiecchio
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
- Advanced Imaging and Artificial Intelligence Center, Department of Neuroradiology, IRCCS Mondino Foundation, Via Mondino 2, 27100, Pavia, Italy
| | - Matteo Paoletti
- Advanced Imaging and Artificial Intelligence Center, Department of Neuroradiology, IRCCS Mondino Foundation, Via Mondino 2, 27100, Pavia, Italy
| | - Giacomo Rebella
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, Italy
| | - Martina Resaz
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, Italy
| | - Luana Benedetti
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, Italy
| | - Federico Massa
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, Italy
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Largo Daneo 3, 16132, Genoa, Italy
| | - Silvia Morbelli
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, Italy
- Department of Health Sciences (DISSAL), University of Genoa, Via Antonio Pastore 1, 16132, Genoa, Italy
| | - Eduardo Caverzasi
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
- Advanced Imaging and Artificial Intelligence Center, Department of Neuroradiology, IRCCS Mondino Foundation, Via Mondino 2, 27100, Pavia, Italy
| | - Carlo Asteggiano
- Advanced Imaging and Artificial Intelligence Center, Department of Neuroradiology, IRCCS Mondino Foundation, Via Mondino 2, 27100, Pavia, Italy
| | - Pietro Businaro
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
- Neuroimmunology Laboratory and Neuroimmunology Research Section, IRCCS Mondino Foundation, Via Mondino 2, 27100, Pavia, Italy
| | - Stefano Masciocchi
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
- Neuroimmunology Laboratory and Neuroimmunology Research Section, IRCCS Mondino Foundation, Via Mondino 2, 27100, Pavia, Italy
| | - Lucio Castellan
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, Italy
| | - Diego Franciotta
- Neuroimmunology Laboratory and Neuroimmunology Research Section, IRCCS Mondino Foundation, Via Mondino 2, 27100, Pavia, Italy
| | - Matteo Gastaldi
- Neuroimmunology Laboratory and Neuroimmunology Research Section, IRCCS Mondino Foundation, Via Mondino 2, 27100, Pavia, Italy
| | - Luca Roccatagliata
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, Italy
- Department of Health Sciences (DISSAL), University of Genoa, Via Antonio Pastore 1, 16132, Genoa, Italy
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Ugga L, Franca RA, Scaravilli A, Solari D, Cocozza S, Tortora F, Cavallo LM, De Caro MDB, Elefante A. Neoplasms and tumor-like lesions of the sellar region: imaging findings with correlation to pathology and 2021 WHO classification. Neuroradiology 2023; 65:675-699. [PMID: 36799985 PMCID: PMC10033642 DOI: 10.1007/s00234-023-03120-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/15/2023] [Indexed: 02/18/2023]
Abstract
The sellar region represents a complex anatomical area, composed of multiple structures of different embryological derivation, including the skull base and the pituitary gland, along with vascular, nervous, and meningeal structures. Masses arising in this region include benign and malignant lesions arising from the pituitary gland itself, but also from vestigial embryological residues or surrounding tissues, that may require different therapeutic approaches. While assessing sellar region masses, the combination of clinical presentation and imaging features is fundamental to define hypotheses about their nature. MR represents the imaging modality of choice, providing information about the site of the lesion, its imaging features, and relation with adjacent structures, while CT is useful to confirm the presence of lesion calcifications or to reveal tumor invasion of bony structures. The aim of this pictorial review is to provide an overview of the common neoplasms and tumor-like conditions of the sellar region, according to the 2021 WHO Classification of Tumors of the Central Nervous System (fifth edition), with an emphasis on the radiologic-pathologic correlation. After a brief introduction on the anatomy of this region and the imaging and pathological techniques currently used, the most relevant MRI characteristics, clinical findings, and pathological data, including histologic and molecular features, will be shown and discussed, with the aim of facilitating an appropriate differential diagnosis among these entities.
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Affiliation(s)
- Lorenzo Ugga
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
| | - Raduan Ahmed Franca
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
| | - Alessandra Scaravilli
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy.
| | - Domenico Solari
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples "Federico II", Naples, Italy
| | - Sirio Cocozza
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
| | - Fabio Tortora
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
| | - Luigi Maria Cavallo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples "Federico II", Naples, Italy
| | | | - Andrea Elefante
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
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Tomkins M, Lawless S, Martin-Grace J, Sherlock M, Thompson CJ. Diagnosis and Management of Central Diabetes Insipidus in Adults. J Clin Endocrinol Metab 2022; 107:2701-2715. [PMID: 35771962 PMCID: PMC9516129 DOI: 10.1210/clinem/dgac381] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Indexed: 11/19/2022]
Abstract
Central diabetes insipidus (CDI) is a clinical syndrome which results from loss or impaired function of vasopressinergic neurons in the hypothalamus/posterior pituitary, resulting in impaired synthesis and/or secretion of arginine vasopressin (AVP). AVP deficiency leads to the inability to concentrate urine and excessive renal water losses, resulting in a clinical syndrome of hypotonic polyuria with compensatory thirst. CDI is caused by diverse etiologies, although it typically develops due to neoplastic, traumatic, or autoimmune destruction of AVP-synthesizing/secreting neurons. This review focuses on the diagnosis and management of CDI, providing insights into the physiological disturbances underpinning the syndrome. Recent developments in diagnostic techniques, particularly the development of the copeptin assay, have improved accuracy and acceptability of the diagnostic approach to the hypotonic polyuria syndrome. We discuss the management of CDI with particular emphasis on management of fluid intake and pharmacological replacement of AVP. Specific clinical syndromes such as adipsic diabetes insipidus and diabetes insipidus in pregnancy as well as management of the perioperative patient with diabetes insipidus are also discussed.
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Affiliation(s)
- Maria Tomkins
- Academic Department of Endocrinology, Beaumont Hospital and Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Sarah Lawless
- Academic Department of Endocrinology, Beaumont Hospital and Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Julie Martin-Grace
- Academic Department of Endocrinology, Beaumont Hospital and Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Mark Sherlock
- Academic Department of Endocrinology, Beaumont Hospital and Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Chris J Thompson
- Correspondence: Chris Thompson, Academic Department of Endocrinology, Beaumont Hospital and Royal College of Surgeons in Ireland, Dublin, Ireland.
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6
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Jang SH, Choi KH. Paroxysmal sympathetic hyperactivity concurrent with hypothalamic injury in a patient with intracerebral hemorrhage: A case report. Medicine (Baltimore) 2022; 101:e30058. [PMID: 35960042 PMCID: PMC9371555 DOI: 10.1097/md.0000000000030058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Paroxysmal sympathetic hyperactivity (PSH) is characterized by exacerbated sympathetic discharge following severe brain injury. Here, we reports a patient diagnosed with PSH after ICH concurrent with hypothalamic injury, as demonstrated by diffusion tensor imaging (DTI). METHODS A 27-year-old man patient was diagnosed with spontaneous intraventricular hemorrhage and intracerebral hemorrhage in both frontal lobes. Two months after onset, brain magnetic resonance imaging of the brain revealed a leukomalactic lesion in the hypothalamus. Three months after the onset, he presented with intermittent high fever, tachycardia, tachypnea, systolic hypertension, diaphoresis, and aggravated rigidity. Infection was ruled out by a physical examination, laboratory tests, and radiological studies. After administrating morphine and bromocriptine, the clinical manifestations improved dramatically. RESULTS PSH after intracranial hemorrhage concurrent with the hypothalamic injury. Fractional anisotropy and mean diffusivity values of DTI were obtained in the hypothalamus. No significant difference in fractional anisotropy value was observed between the patient and control group (10 age-matched healthy male subjects) (P > .05). On the other hand, the mean diffusivity value was higher in the patient group than in the control group (P < .05), indicating hypothalamic injury. CONCLUSION PSH concurrent with hypothalamic injury was observed in a patient with stroke. This study suggests that DTI can be a useful imaging method for evaluating the hypothalamic state of patients presenting with PSH after brain injury.
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Affiliation(s)
- Sung Ho Jang
- Department of Physical Medicine and Rehabilitation, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - Kyu Hwan Choi
- Department of Physical Medicine and Rehabilitation, College of Medicine, Yeungnam University, Daegu, Republic of Korea
- *Correspondence: Kyu Hwan Choi, MD, Department of Physical Medicine and Rehabilitation, College of Medicine, Yeungnam University, 317-1, Daemyung Dong, Namgu, Daegu 705-717, Republic of Korea. (e-mail: )
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Distribution Pattern of the Monoamine Oxidase B Ligand, 18F-THK5351, in the Healthy Brain. Clin Nucl Med 2022; 47:e489-e495. [PMID: 35675140 DOI: 10.1097/rlu.0000000000004272] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND 18F-THK5351 PET estimates the concentrations of monoamine oxidase B (MAO-B) that are preferentially located in astrocytes and can be used to visualize and quantify ongoing astrogliosis. To study images of astrogliosis in neurological disorders, it is essential to understand the detailed binding sites of 18F-THK5351 as the MAO-B ligand under normal conditions. In this study, we examined the detailed distribution pattern of 18F-THK5351 in the healthy brain by comparing 18F-THK5351 uptake between subjects taking and not taking the MAO-B inhibitor. METHODS Ten healthy controls (HCs: 67.4 [SD, 15.1] years) and 4 patients with Parkinson disease taking the MAO-B inhibitor underwent 18F-THK5351 PET. The uptake ratio index (URI) was defined to quantify 18F-THK5351 uptake, using the cerebellum as a reference region. The cerebellar URI was set to zero. RESULTS For HCs, regions with URI ≥1 were preferentially observed in the following order: the striatum, globus pallidus, thalamus, hypothalamus, amygdala, periaqueductal gray, substantia nigra, medulla, hippocampus, and pons. The peak URI values in the corresponding regions were 2.93, 2.47, 2.12, 2.04, 1.84, 1.68, 1.67, 1.37, 1.20, and 1.11, respectively. For all patients with Parkinson disease taking the MAO-B inhibitor, the URI values in all these regions were significantly decreased (Z score >2) and were reduced from 60.4% to 99.9%, compared with HCs. CONCLUSIONS This study presented the detailed distribution pattern of 18F-THK5351 in HCs and suggests that 18F-THK5351 uptake largely reflects MAO-B concentrations under normal conditions.
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8
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Practical Genetics for the Neuroradiologist: Adding Value in Neurogenetic Disease. Acad Radiol 2022; 29 Suppl 3:S1-S27. [PMID: 33495073 DOI: 10.1016/j.acra.2020.12.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/19/2020] [Accepted: 12/27/2020] [Indexed: 11/23/2022]
Abstract
Genetic discoveries have transformed our understanding of many neurologic diseases. Identification of specific causal pathogenic variants has improved understanding of pathophysiology and enabled replacement of many confusing eponyms and acronyms with more meaningful and clinically relevant genetics-based terminology. In this era of rapid scientific advancement, multidisciplinary collaboration among pediatricians, neurologists, geneticists, radiologists, and other members of the health care team is increasingly important in the care of patients with genetic neurologic diseases. Radiologists familiar with neurogenetic disease add value by (1) recognizing constellations of characteristic imaging findings that are associated with a genetic disease before one is clinically suspected; (2) predicting the most likely genotypes for a given imaging phenotype in clinically suspected genetic disease; and (3) providing detailed and accurate descriptions of the imaging phenotype in challenging cases with unknown or uncertain genotypes. This review aims to increase awareness and understanding of pathogenic variants relating to neurologic disease by (1) briefly reviewing foundational knowledge of chromosomes, inheritance patterns, and mutagenesis; (2) providing concrete examples of and detailed information about specific neurologic diseases resulting from pathogenic variants; and (3) highlighting clinical and imaging features that are of greatest relevance for the radiologist.
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9
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Yang F, Cao Z, Wang X, Cui Z, Cheng D, Li Z, Lv B, Zhang H, Guo P, Feng Y, Liu W. A multi-parameter study of the etiological diagnosis of hyponatremia after hypothalamic tumor surgery. Clin Neurol Neurosurg 2021; 210:106963. [PMID: 34715556 DOI: 10.1016/j.clineuro.2021.106963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 07/21/2021] [Accepted: 09/27/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVES This study aimed to analyze the difference between cerebral salt-wasting syndrome (CSWS) and syndrome of inappropriate secretion of antidiuretic hormone (SIADH) in patients with hyponatremia after hypothalamic tumor surgery, and to explore a convenient and effective way to identify CSWS and SIADH. METHODS Patients undergoing craniotomy of hypothalamic tumor admitted to the Department of The Affiliated Hospital of Qingdao University from December 2018 to May 2020 were enrolled in this study. Plasma brain natriuretic peptide (BNP), 24-h urine sodium, 24-h urine volume, and the diameter of the inferior vena cava (IVCD) were measured daily before operation and 1-7 days after operation, to analyze differences in plasma BNP, 24-h urinary sodium excretion, 24-h urine volume, and IVCD between the CSWS and SIADH. RESULTS The medical data of 31 patients with hypothalamic tumors were collected. Fifteen of these patients (48%) had postoperative hyponatremia, nine patients (29%) had CSWS, and six patients (19%) had SIADH. Plasma BNP, 24-h urinary sodium excretion, and 24-h urine volume in the CSWS group were significantly higher than those in the SIADH group. IVCD decreased in the CSWS group and increased in the SIADH group. CONCLUSIONS When hyponatremia occurs after hypothalamic tumor surgery, plasma BNP, 24-h urinary sodium excretion, 24-h urine volume, and IVCD are of great help in identifying CSWS and SIADH.
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Affiliation(s)
- Fengyu Yang
- Department of Neurosurgery, Chengyang District People's Hospital, Qingdao 266071, China
| | - Zhigang Cao
- Department of Neurosurgery, Chengyang District People's Hospital, Qingdao 266071, China
| | - Xiaoyu Wang
- Department of Operating Room, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Zhenwen Cui
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Dekui Cheng
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Ziji Li
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Bingke Lv
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Hongliang Zhang
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Pin Guo
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Yugong Feng
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Wei Liu
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China.
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10
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Wang M, Yan Z, Liu R. The "Hand as Foot" teaching method in hypothalamic and pituitary anatomy. Asian J Surg 2021; 45:531-532. [PMID: 34635414 DOI: 10.1016/j.asjsur.2021.09.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/10/2021] [Accepted: 09/20/2021] [Indexed: 11/29/2022] Open
Affiliation(s)
- Mingjie Wang
- Inner Mongolia Medical University, Department of Endocrinology, Affiliated Hospital of Inner Mongolia Medical University, Huhhot North Street, Inner Mongolia, 010050, China
| | - Zhaoli Yan
- Inner Mongolia Medical University, Department of Endocrinology, Affiliated Hospital of Inner Mongolia Medical University, Huhhot North Street, Inner Mongolia, 010050, China.
| | - Rui Liu
- Inner Mongolia Medical University, Department of Orthopedics, Affiliated Hospital of Inner Mongolia Medical University, Huhhot North Street, Inner Mongolia, 010050, China
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11
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Jipa A, Jain V. Imaging of the sellar and parasellar regions. Clin Imaging 2021; 77:254-275. [PMID: 34153590 DOI: 10.1016/j.clinimag.2021.05.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 11/20/2022]
Abstract
Although a wide variety of pathologies can occur in the limited anatomic space within and surrounding the sella turcica only a few are common. This review aims to briefly summarize pituitary and parasellar anatomy and provide a focused description of the imaging features of both common and rare pituitary pathologies. Diagnoses of imaging findings with important implications for clinical management are highlighted. MR is the primary diagnostic modality for evaluation of this anatomic region. CT supplements MR in the evaluation of pathologies involving the bony sella turcica while angiography or nuclear medicine plays a limited clinical role. Despite the wide array of pathologies, imaging and basic clinical history will frequently yield a specific diagnosis or narrow differential. In certain pathologies such as hypophysitis or pituitary hyperplasia, proper imaging interpretation may obviate the need for surgical biopsy or resection. The two key elements to diagnosis in the pituitary region are localization of the abnormality and recognition of characteristic imaging features for different pathologies. Localization is particularly important in separating parasellar masses such as meningiomas, skull base tumors, carotid aneurysms, craniopharyngiomas, or sphenoid sinus tumors from pituitary masses. Imaging features are often variable and in some cases such as craniopharyngioma or epidermoid, can be almost pathognomonic. In cases of neoplastic pathology, imaging both provides diagnostic information and guides planning of surgical biopsy or resection. In most cases, biopsy or resection is performed though a trans-sphenoidal endoscopic route, and identifying invasion or the suprasellar cistern, skull base, or cavernous sinuses is critical.
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Affiliation(s)
- Andrei Jipa
- Radiology Residency Program, Case Western Reserve School of Medicine and MetroHealth Medical Center, Cleveland, OH, USA.
| | - Vikas Jain
- Case Western Reserve School of Medicine and MetroHealth Medical Center, Cleveland, OH, USA.
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12
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Hypothalamic lesions in neuromyelitis optica spectrum disorders: exploring a scoring system based on magnetic resonance imaging. Jpn J Radiol 2021; 39:659-668. [PMID: 33689108 DOI: 10.1007/s11604-021-01104-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 02/15/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE We propose a scoring system for early diagnosis of sleep abnormalities in neuromyelitis optica spectrum disorders (NMOSD) with hypothalamic lesions based on magnetic resonance imaging (MRI). MATERIALS AND METHODS We evaluated MRI features of 45 patients with hypothalamic lesions identified from two cohorts. Univariate logistic regression analysis identified factors associated with sleepiness, which were subsequently used to develop a scoring system. Interrater reliability was determined using intraclass correlation coefficient (ICC). Correlations between scores and clinical features were analyzed. RESULTS In total, 48.9% of 45 patients with hypothalamic lesions exhibited sleepiness. The number of involved slices, maximum width/length of hypothalamic lesions, and boundaries extending beyond the hypothalamus were associated with sleepiness (all p < 0.05). The sensitivity and specificity of the scoring system were 68.2% and 87.0%, respectively. The ICC values for the maximum width and length measurement of hypothalamic lesions were 0.82 and 0.81, respectively. Daily sleep time and Epworth sleepiness scale scores were positively correlated with MRI-based scores (p < 0.05, 95% confidence interval (CI) 0.69-0.93 and p < 0.05, 95% CI 0.55-0.88, respectively). CONCLUSION A scoring system based on MRI features was developed to provide diagnosis of sleepiness in NMOSD with hypothalamic lesions earlier than other measures.
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ANTI-MA2 encephalitis mimicking diencephalic demyelinating syndrome. INTERDISCIPLINARY NEUROSURGERY 2021. [DOI: 10.1016/j.inat.2020.100980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Farrell TP, Adams NC, Looby S. Neuroimaging of central diabetes insipidus. HANDBOOK OF CLINICAL NEUROLOGY 2021; 181:207-237. [PMID: 34238459 DOI: 10.1016/b978-0-12-820683-6.00016-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Central diabetes insipidus (CDI) occurs secondary to deficient synthesis or secretion of arginine vasopressin peptide from the hypothalamo-neurohypophyseal system (HNS). It is characterized by polydipsia and polyuria (urine output >30mL/kg/day in adults and >2l/m2/24h in children) of dilute urine (<250mOsm/L). It can result from any pathology affecting one or more components of the HNS including the hypothalamic osmoreceptors, supraoptic or paraventricular nuclei, and median eminence of the hypothalamus, infundibulum, stalk or the posterior pituitary gland. MRI is the imaging modality of choice for evaluation of the hypothalamic-pituitary axis (HPA), and a dedicated pituitary or sella protocol is essential. CT can provide complimentary diagnostic information and is also of value when MRI is contraindicated. The most common causes are benign or malignant neoplasia of the HPA (25%), surgery (20%), and head trauma (16%). No cause is identified in up to 30% of cases, classified as idiopathic CDI. Knowledge of the anatomy and physiology of the HNS is crucial when evaluating a patient with CDI. Establishing the etiology of CDI with MRI in combination with clinical and biochemical assessment facilitates appropriate targeted treatment. This chapter illustrates the wide variety of causes and imaging correlates of CDI on neuroimaging, discusses the optimal imaging protocols, and revises the detailed neuroanatomy required to interpret these studies.
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Affiliation(s)
- Terence Patrick Farrell
- Division of Neuroradiology, Thomas Jefferson University Hospital, Philadelphia, PA, United States
| | - Niamh Catherine Adams
- Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, PA, United States.
| | - Seamus Looby
- Department of Neuroradiology, Beaumont Hospital, Dublin, Ireland
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Alomari SO, Houshiemy MNE, Bsat S, Moussalem CK, Allouh M, Omeis IA. Hypothalamic hamartomas: A comprehensive review of the literature - Part 1: Neurobiological features, clinical presentations and advancements in diagnostic tools. Clin Neurol Neurosurg 2020; 197:106076. [PMID: 32717559 DOI: 10.1016/j.clineuro.2020.106076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/25/2020] [Accepted: 07/06/2020] [Indexed: 10/23/2022]
Abstract
Hypothalamic hamartomas (HH) are rare, non-neoplastic heterotopic tissues which contains normal neurons and glia including oligodendrocytes and fibrillary astrocytes but in an abnormal distribution. They arise from the floor of the third ventricle, tuber cinereum, or mammillary bodies. Estimated incidence ranges from 1 in 50,000-1 in 1,000,000. Hypothalamic hamartomas are associated with different clinical presentations including various types of seizures, most characteristically; the gelastic seizures, precocious puberty, cognitive impairment, and behavioral changes. In this review, the authors discuss advancements in different diagnostic elements of hypothalamic hamartoma; including clinical features, EEG findings, and neuroimaging techniques. Moreover, different classifications described in the literature will be discussed.
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Affiliation(s)
- Safwan O Alomari
- Division of Neurosurgery, Department of Surgery, American University of Beirut Medical Center, Lebanon
| | - Mohammed N El Houshiemy
- Division of Neurosurgery, Department of Surgery, American University of Beirut Medical Center, Lebanon
| | - Shadi Bsat
- Division of Neurosurgery, Department of Surgery, American University of Beirut Medical Center, Lebanon
| | - Charbel K Moussalem
- Division of Neurosurgery, Department of Surgery, American University of Beirut Medical Center, Lebanon
| | - Mohammed Allouh
- Anatomy Department, College of Medicine and Health Sciences, United Arab Emirates University, United Arab Emirates
| | - Ibrahim A Omeis
- Division of Neurosurgery, Department of Surgery, American University of Beirut Medical Center, Lebanon.
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Duarte-Celada WR, Thakolwiboon S, Brandi L, Duarte-Celada C, Avila M. Adult Langerhans cell histiocytosis of the central nervous system. Proc AMIA Symp 2020; 33:603-605. [PMID: 33100539 DOI: 10.1080/08998280.2020.1772184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Langerhans cell histiocytosis (LCH), a disorder characterized by aberrant function and proliferation of mononuclear phagocytic cells called Langerhans cells, usually occurs in those <15 years of age. Adult-onset LCH is extremely rare. We present a case of a 35-year-old woman who presented with multiple episodes of confusion, rapidly progressive cognitive decline, and multiple endocrinopathies, including diabetes insipidus. Brain imaging showed a hypothalamic lesion, and biopsy results confirmed the diagnosis of LCH. Given the wide variety of presentations and the multiple differential diagnoses of hypothalamic lesions, it is essential to be aware of this uncommon condition, especially in adults, where it may be underdiagnosed.
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Affiliation(s)
| | - Smathorn Thakolwiboon
- Department of Neurology, Texas Tech University Health Sciences Center, Lubbock, Texas
| | - Luis Brandi
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, Texas
| | | | - Mirla Avila
- Department of Neurology, Texas Tech University Health Sciences Center, Lubbock, Texas
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Schmidt B, Cattin F, Aubry S. Prevalence of Rathke cleft cysts in children on magnetic resonance imaging. Diagn Interv Imaging 2020; 101:209-215. [DOI: 10.1016/j.diii.2019.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/01/2019] [Accepted: 12/18/2019] [Indexed: 10/25/2022]
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Panyaping T, Taebunpakul P, Tritanon O. Accuracy of apparent diffusion coefficient values and magnetic resonance imaging in differentiating suprasellar germinomas from chiasmatic/hypothalamic gliomas. Neuroradiol J 2020; 33:201-209. [PMID: 32193980 DOI: 10.1177/1971400920912656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE The aim of this study was to differentiate suprasellar germinomas from chiasmatic/hypothalamic gliomas (CHGs) using apparent diffusion coefficient (ADC) values and magnetic resonance imaging (MRI) characteristics. MATERIALS AND METHODS A cross-sectional study was conducted on 11 patients with suprasellar germinomas and 11 patients with CHGs who underwent pretreatment MRI. The ADC values (minimum and average ADC values) of the tumors were measured and the MRI characteristics were evaluated. RESULTS The average and minimum ADC values of suprasellar germinomas were significantly lower than those of CHGs (p = 0.016 and 0.004 respectively). The selection of 941.15 × 10-6 mm2/s as a cutoff value of the minimum ADC value was used to differentiate suprasellar germinomas and CHGs; the best results were obtained with area under the curve of 0.889, sensitivity of 87.5%, specificity of 77.8% and accuracy of 82.4%. MRI characteristics suggested the diagnosis of suprasellar germinomas were T2W hypointensity and involvement of pituitary gland and/or stalk. MRI characteristics suggested the diagnosis of CHGs was higher degree of contrast enhancement and presence of macrocysts. CONCLUSION ADC values have a role in differentiating suprasellar germinomas and CHGs, especially when imaging findings on conventional MRI are inconclusive. Furthermore, some MRI features are in favor of differentiation between these tumor entities including tumor location, cyst pattern, T2W hypointensity, degree of contrast enhancement, stalk and pituitary gland involvement.
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Affiliation(s)
- Theeraphol Panyaping
- Department of Diagnostic and Therapeutic Radiology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Piyakarn Taebunpakul
- Department of Diagnostic and Therapeutic Radiology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Oranan Tritanon
- Department of Diagnostic and Therapeutic Radiology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Ler GYL, Liew WKM, Lim J, Lim JY, Ong LY, Tang PH, Low D, Lim T, Jamuar SS. Teaching NeuroImages: Hypothalamic hamartoma and polydactyly: Think Pallister-Hall syndrome. Neurology 2019; 93:e1016-e1017. [PMID: 31792112 DOI: 10.1212/wnl.0000000000008580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Grace Yan Ling Ler
- From the Departments of Paediatrics (G.Y.L.L., W.K.-M.L., J.L., J.Y.L., S.S.J.), Paediatric Surgery (L.Y.O.), Radiology (P.H.T.), and Neurosurgery (D.L.), KK Women's and Children's Hospital; Neurology Centre (W.K.-M.L.), Singapore Baby and Child Clinic; Paediatric Academic Medical Programme (J.L.), Institute of Precision Medicine (S.S.J.), Duke-NUS Medical School; and Department of Radiology (T.L.), National Neuroscience Institute, Singapore
| | - Wendy Kein-Meng Liew
- From the Departments of Paediatrics (G.Y.L.L., W.K.-M.L., J.L., J.Y.L., S.S.J.), Paediatric Surgery (L.Y.O.), Radiology (P.H.T.), and Neurosurgery (D.L.), KK Women's and Children's Hospital; Neurology Centre (W.K.-M.L.), Singapore Baby and Child Clinic; Paediatric Academic Medical Programme (J.L.), Institute of Precision Medicine (S.S.J.), Duke-NUS Medical School; and Department of Radiology (T.L.), National Neuroscience Institute, Singapore
| | - Jocelyn Lim
- From the Departments of Paediatrics (G.Y.L.L., W.K.-M.L., J.L., J.Y.L., S.S.J.), Paediatric Surgery (L.Y.O.), Radiology (P.H.T.), and Neurosurgery (D.L.), KK Women's and Children's Hospital; Neurology Centre (W.K.-M.L.), Singapore Baby and Child Clinic; Paediatric Academic Medical Programme (J.L.), Institute of Precision Medicine (S.S.J.), Duke-NUS Medical School; and Department of Radiology (T.L.), National Neuroscience Institute, Singapore
| | - Jin Ying Lim
- From the Departments of Paediatrics (G.Y.L.L., W.K.-M.L., J.L., J.Y.L., S.S.J.), Paediatric Surgery (L.Y.O.), Radiology (P.H.T.), and Neurosurgery (D.L.), KK Women's and Children's Hospital; Neurology Centre (W.K.-M.L.), Singapore Baby and Child Clinic; Paediatric Academic Medical Programme (J.L.), Institute of Precision Medicine (S.S.J.), Duke-NUS Medical School; and Department of Radiology (T.L.), National Neuroscience Institute, Singapore
| | - Lin Yin Ong
- From the Departments of Paediatrics (G.Y.L.L., W.K.-M.L., J.L., J.Y.L., S.S.J.), Paediatric Surgery (L.Y.O.), Radiology (P.H.T.), and Neurosurgery (D.L.), KK Women's and Children's Hospital; Neurology Centre (W.K.-M.L.), Singapore Baby and Child Clinic; Paediatric Academic Medical Programme (J.L.), Institute of Precision Medicine (S.S.J.), Duke-NUS Medical School; and Department of Radiology (T.L.), National Neuroscience Institute, Singapore
| | - Phua Hwee Tang
- From the Departments of Paediatrics (G.Y.L.L., W.K.-M.L., J.L., J.Y.L., S.S.J.), Paediatric Surgery (L.Y.O.), Radiology (P.H.T.), and Neurosurgery (D.L.), KK Women's and Children's Hospital; Neurology Centre (W.K.-M.L.), Singapore Baby and Child Clinic; Paediatric Academic Medical Programme (J.L.), Institute of Precision Medicine (S.S.J.), Duke-NUS Medical School; and Department of Radiology (T.L.), National Neuroscience Institute, Singapore
| | - David Low
- From the Departments of Paediatrics (G.Y.L.L., W.K.-M.L., J.L., J.Y.L., S.S.J.), Paediatric Surgery (L.Y.O.), Radiology (P.H.T.), and Neurosurgery (D.L.), KK Women's and Children's Hospital; Neurology Centre (W.K.-M.L.), Singapore Baby and Child Clinic; Paediatric Academic Medical Programme (J.L.), Institute of Precision Medicine (S.S.J.), Duke-NUS Medical School; and Department of Radiology (T.L.), National Neuroscience Institute, Singapore
| | - Tchoyoson Lim
- From the Departments of Paediatrics (G.Y.L.L., W.K.-M.L., J.L., J.Y.L., S.S.J.), Paediatric Surgery (L.Y.O.), Radiology (P.H.T.), and Neurosurgery (D.L.), KK Women's and Children's Hospital; Neurology Centre (W.K.-M.L.), Singapore Baby and Child Clinic; Paediatric Academic Medical Programme (J.L.), Institute of Precision Medicine (S.S.J.), Duke-NUS Medical School; and Department of Radiology (T.L.), National Neuroscience Institute, Singapore
| | - Saumya Shekhar Jamuar
- From the Departments of Paediatrics (G.Y.L.L., W.K.-M.L., J.L., J.Y.L., S.S.J.), Paediatric Surgery (L.Y.O.), Radiology (P.H.T.), and Neurosurgery (D.L.), KK Women's and Children's Hospital; Neurology Centre (W.K.-M.L.), Singapore Baby and Child Clinic; Paediatric Academic Medical Programme (J.L.), Institute of Precision Medicine (S.S.J.), Duke-NUS Medical School; and Department of Radiology (T.L.), National Neuroscience Institute, Singapore.
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Abstract
Cavernomas are vascular malformations which are collections of endothelium-lined sinusoids without intervening cerebral parenchyma. Hypothalamic location of cavernoma is extremely rare. We present a case of a 34-year-old male who presented with complaints of recent memory loss and vomiting. On magnetic resonance imaging with gradient sequences and contrast, a diagnosis of hypothalamic cavernoma was suggested. Excision of lesion was performed by a right parasagittal pericoronal craniotomy via transcallosal approach. Intraoperative findings and histopathology examination corroborated the diagnosis. The uniqueness of this case report is in the susceptibility-weighted sequence which led to the radiological diagnosis.
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Affiliation(s)
- Santosh P V Rai
- Department of Radiodiagnosis, Kasturba Medical College, Manipal Academy of Higher Education, Mangalore, Karnataka, India
| | - Shrijeet Chakraborti
- Department of Pathology, Kasturba Medical College, Manipal Academy of Higher Education, Mangalore, Karnataka, India
| | - Parvathi Chandran
- Department of Radiodiagnosis, Kasturba Medical College, Manipal Academy of Higher Education, Mangalore, Karnataka, India
| | - Muralidhar V Pai
- Department of Neurosurgery, Kasturba Medical College, Manipal Academy of Higher Education, Mangalore, Karnataka, India
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Analysis of Expression Pattern of snoRNAs in Different Cancer Types with Machine Learning Algorithms. Int J Mol Sci 2019; 20:ijms20092185. [PMID: 31052553 PMCID: PMC6539089 DOI: 10.3390/ijms20092185] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/29/2019] [Accepted: 04/30/2019] [Indexed: 01/17/2023] Open
Abstract
Small nucleolar RNAs (snoRNAs) are a new type of functional small RNAs involved in the chemical modifications of rRNAs, tRNAs, and small nuclear RNAs. It is reported that they play important roles in tumorigenesis via various regulatory modes. snoRNAs can both participate in the regulation of methylation and pseudouridylation and regulate the expression pattern of their host genes. This research investigated the expression pattern of snoRNAs in eight major cancer types in TCGA via several machine learning algorithms. The expression levels of snoRNAs were first analyzed by a powerful feature selection method, Monte Carlo feature selection (MCFS). A feature list and some informative features were accessed. Then, the incremental feature selection (IFS) was applied to the feature list to extract optimal features/snoRNAs, which can make the support vector machine (SVM) yield best performance. The discriminative snoRNAs included HBII-52-14, HBII-336, SNORD123, HBII-85-29, HBII-420, U3, HBI-43, SNORD116, SNORA73B, SCARNA4, HBII-85-20, etc., on which the SVM can provide a Matthew’s correlation coefficient (MCC) of 0.881 for predicting these eight cancer types. On the other hand, the informative features were fed into the Johnson reducer and repeated incremental pruning to produce error reduction (RIPPER) algorithms to generate classification rules, which can clearly show different snoRNAs expression patterns in different cancer types. The analysis results indicated that extracted discriminative snoRNAs can be important for identifying cancer samples in different types and the expression pattern of snoRNAs in different cancer types can be partly uncovered by quantitative recognition rules.
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22
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Leptin regulates neuropeptides associated with food intake and GnRH secretion. ANNALES D'ENDOCRINOLOGIE 2019; 80:38-46. [DOI: 10.1016/j.ando.2018.07.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 05/31/2018] [Accepted: 07/26/2018] [Indexed: 12/18/2022]
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Pediatric Tumor Neuroradiology. Clin Neuroradiol 2019. [DOI: 10.1007/978-3-319-68536-6_36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Bisdas S, D’Arco F. Pediatric Tumor Neuroradiology. Clin Neuroradiol 2019. [DOI: 10.1007/978-3-319-61423-6_36-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Bisdas S, D’Arco F. Pediatric Tumor Neuroradiology. Clin Neuroradiol 2019. [DOI: 10.1007/978-3-319-61423-6_36-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Kim SS, Hong SA, Shin HC, Hwang JA, Jou SS, Choi SY. Adult Langerhans' cell histiocytosis with multisystem involvement: A case report. Medicine (Baltimore) 2018; 97:e13366. [PMID: 30508929 PMCID: PMC6283112 DOI: 10.1097/md.0000000000013366] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
RATIONALE Langerhans' cell histiocytosis (LCH), also called histiocytosis X, is an uncommon disorder manifesting in a variety of ways. Although LCH can involve various organs including bone, skin, and lymph nodes, multisystem involvement of LCH is rare in adults. PATIENT CONCERNS A 31-year-old woman first presented to our hospital with left leg pain. She had a history of a 20-kg weight gain over three months. DIAGNOSES X-ray, magnetic resonance imaging (MRI), computed tomography (CT), and bone scan images revealed enhancing lesions in the left femur and right temporal bone, multiple cystic lesions in the lung, enhancing mass in the pituitary stalk, and fat density lesions in the liver. The patient underwent excisional biopsy for the femoral lesion and histologic examination confirmed the diagnosis of LCH. INTERVENTIONS Excisional biopsy was performed for the bony lesion in the left femur. She received chemotherapy with vinblastine and prednisolone. OUTCOMES The patient expired after 21 months from initial admission following recurrent episodes of pneumothorax, pneumonia, and sepsis. LESSONS Our case showed LCH involvement in bone, lung, central nervous system (CNS), and liver. Although it is occasionally difficult to discriminate LCH from other disorders, systemic evaluation might be helpful for differential diagnosis. Familiarity with the various multisystemic involvements of LCH on imaging is vital for diagnosing and managing patients in daily practice.
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Affiliation(s)
- Seung Soo Kim
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, Cheonan-si
| | - Soon Auck Hong
- Department of Pathology, Soonchunhyang University College of Medicine, Cheonan Hospital, Cheonan-si
| | - Hyeong Cheol Shin
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, Cheonan-si
| | - Jeong Ah Hwang
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, Cheonan-si
| | - Sung Shick Jou
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, Cheonan-si
| | - Seo-Youn Choi
- Department of Radiology, Soonchunhyang University College of Medicine, Bucheon Hospital, Bucheon, Republic of Korea
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Neuroimaging of central diabetes insipidus—when, how and findings. Neuroradiology 2018; 60:995-1012. [DOI: 10.1007/s00234-018-2072-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 07/30/2018] [Indexed: 12/19/2022]
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28
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Eshghi A, Klein R, Eshghi N, Kuo PH. 18F-FDG PET/CT for the Evaluation of Primary Eosinophilic Granuloma of the Hypothalamus. J Nucl Med Technol 2018; 46:290-291. [PMID: 29724799 DOI: 10.2967/jnmt.118.209957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 03/29/2018] [Indexed: 11/16/2022] Open
Abstract
A 21-y-old man who presented with polyuria and polydipsia was discovered to have diabetes insipidus due to eosinophilic granuloma of the hypothalamus. 18F-FDG PET/CT, which was performed as a metastatic work-up, revealed an intensely 18F-FDG-avid hypothalamic mass and no other sites of disease.
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Affiliation(s)
- Anna Eshghi
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona
| | - Robert Klein
- Department of Pathology, Banner University Medical Center, Tucson, Arizona
| | | | - Phillip H Kuo
- Department of Medical Imaging, University of Arizona, Tucson, Arizona; and
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Eduardo DDS, Franco SB, de Castro JDV. Magnetic resonance imaging of sellar and juxtasellar abnormalities: atypical findings of common diseases and typical findings of rare diseases. Radiol Bras 2018; 51:45-51. [PMID: 29559765 PMCID: PMC5846324 DOI: 10.1590/0100-3984.2016.0039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The sellar/juxtasellar region comprises the bone component of the sella turcica,
pituitary gland, cavernous sinus, and suprasellar cistern. Abnormalities in this
region can be attributed to underproduction or overproduction of hormones or to
the neurological signs and symptoms resulting from the compression of adjacent
structures. Magnetic resonance imaging (MRI) is currently the imaging method of
choice, having supplanted computed tomography. The aim of this study was to
demonstrate the common and uncommon imaging aspects of sellar and juxtasellar
changes, which could facilitate the differential diagnosis. We retrospectively
evaluated the MRI scans of 70 patients with sellar/juxtasellar abnormalities
from didactic files, and report those with more unusual changes, where MRI
played an important role in diagnosis. All cases were confirmed histologically
or clinical laboratory.
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Affiliation(s)
| | - Suyane Benevides Franco
- Médica Residente de Radiologia e Diagnóstico por Imagem, Universidade Federal do Ceará (UFC), Fortaleza, CE, Brasil
| | - José Daniel Vieira de Castro
- Doutor, Médico Neurorradiologista, Professor Associado de Radiologia do Departamento de Medicina Clínica da Faculdade de Medicina da Universidade Federal do Ceará (UFC), Fortaleza, CE, Brasil
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30
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Rootman MS, Konen O, Fried I, Toledano H. Preferential sites of metastatic relapse on MRI of initially localized ependymoma in children. Clin Imaging 2017; 44:12-15. [DOI: 10.1016/j.clinimag.2017.03.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/08/2017] [Accepted: 03/22/2017] [Indexed: 12/20/2022]
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31
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Seeburg DP, Dremmen MHG, Huisman TAGM. Imaging of the Sella and Parasellar Region in the Pediatric Population. Neuroimaging Clin N Am 2017; 27:99-121. [PMID: 27889026 DOI: 10.1016/j.nic.2016.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Masses in the sella and parasellar region comprise about 10% of all pediatric brain tumors but type and frequency differs from those in adults. Imaging is critical for diagnosis and characterization of these lesions. By assessing the site of origin, signal and contrast enhancement characteristics, and the presence or absence of characteristic patterns, differential diagnosis can narrow the possibilities. The clinical presentation is often characteristic for lesion type and should be considered. This article summarizes the characteristic imaging features of the most frequent pediatric tumors and tumor-mimicking lesions in children in this region.
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Affiliation(s)
- Daniel P Seeburg
- Division of Pediatric Radiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins Medical Institutions, 1800 Orleans Street, Baltimore, MD 21287, USA; Division of Neuroradiology, Russel H. Morgan Department of Radiology and Radiologic Science, The Johns Hopkins Hospital, The Johns Hopkins Medical Institutions, Phipps B-100, 600 North Wolfe Street, Baltimore, MD 21287, USA
| | - Marjolein H G Dremmen
- Division of Pediatric Radiology, Department of Radiology, Erasmus MC - University Medical Center, 's-Gravendijkwal 230, 3015 CE Rotterdam, Netherlands
| | - Thierry A G M Huisman
- Division of Pediatric Radiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins Medical Institutions, 1800 Orleans Street, Baltimore, MD 21287, USA; Division of Neuroradiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins Medical Institutions, 600 North Wolfe Street, Baltimore, MD 21287, USA.
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Management Challenges in a Child with Chronic Hyponatremia: Use of V2 Receptor Antagonist. Case Rep Pediatr 2017; 2017:3757423. [PMID: 28149654 PMCID: PMC5253166 DOI: 10.1155/2017/3757423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/08/2016] [Accepted: 12/12/2016] [Indexed: 11/18/2022] Open
Abstract
Chronic hyponatremia is very rare in children and is often seen in the setting of congestive heart failure or liver failure in adults. Here, we report an 8-year-old child with hypothalamic glioma who presented with severe hyponatremia. Initial management consisted of fluid restriction. This was very difficult for the child to follow and the child developed bizarre drinking habits requiring intervention from child psychiatry. So therapy was initiated with low dose V2 receptor antagonist under close inpatient monitoring. While initial response was reassuring, her sodium levels tended to drift down with longer duration of treatment requiring us to increase the dose frequently. Her response to therapy and her stable clinical situation off therapy suggest that she may have reset osmostat.
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Leiter Herrán F, Restrepo CS, Alvarez Gómez DI, Suby-Long T, Ocazionez D, Vargas D. Hamartomas from head to toe: an imaging overview. Br J Radiol 2016; 90:20160607. [PMID: 27936889 DOI: 10.1259/bjr.20160607] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Hamartomas are tumours composed of mesenchymal tissues such as cartilage, fat, connective tissue and smooth muscle and can be found in virtually any organ system. These masses commonly develop sporadically, but are also seen in certain syndromes such as tuberous sclerosis or Carney triad. While their imaging appearance varies depending on the organ they arise from, findings are usually unique and a diagnosis can be confidently made. Radiologists must be aware of the clinical and imaging presentations of these lesions with the particular goal of avoiding unnecessary studies or invasive procedures. Furthermore, knowledge of common syndromic entities is crucial, as the radiologist may be the first to suggest the diagnosis.
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Affiliation(s)
| | | | | | - Thomas Suby-Long
- 4 University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | | | - Daniel Vargas
- 4 University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
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35
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Cózar Santiago MDP, Sanchez Jurado R, Sanz Llorens R, Aguilar Barrios JE, Ferrer Rebolleda J. Limbic Encephalitis Diagnosed With 18F-FDG PET/CT. Clin Nucl Med 2016; 41:e101-3. [PMID: 26571448 DOI: 10.1097/rlu.0000000000001076] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Limbic encephalitis is a subacute onset syndrome characterized by short-term memory impairment, confusion, temporal lobe epilepsy, hypothalamic dysfunction, and psychiatric symptoms. Common causes are autoimmune disorders or idiopathic disease, although it has been associated to tumors. We report the case of a woman arrived at the emergency department having had fluctuating impaired memory for 2 weeks. The first MRI was normal. It was decided to perform lumbar puncture and PET/CT to exclude viral origin or paraneoplastic syndrome. Typical abnormalities were found in the second MRI (1 month after previous); however, FDG PET is a useful tool that contributes to early detection.
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36
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Yildiz AE, Oguz KK, Fitoz S. Suprasellar masses in children: Characteristic MR imaging features. J Neuroradiol 2016; 43:246-59. [DOI: 10.1016/j.neurad.2016.03.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/03/2016] [Accepted: 03/29/2016] [Indexed: 11/27/2022]
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Abstract
A 19-year-old Caucasian male presented with complaints of headaches and syncope. Suspicion of hydrocephalus prompted computed tomography (CT) and magnetic resonance imaging (MRI), which revealed pineal and suprasellar prominences with diffuse, thick, nodular subependymal enhancement of the lateral and third ventricles. Based on imaging, the differential diagnosis consisted primarily of malignancy, such as lymphoma, with inflammatory and infectious etiologies not excluded. Cerebrospinal fluid (CSF) samples were non-specific, and neuroendoscopic tissue biopsy histologically confirmed the diagnosis of pure germinoma. The patient was treated with radiation, and follow-up MRIs at one, three, six, and 12 months demonstrated progressive resolution of tumor burden with marked clinical improvement. Germinomas are rare germ cell tumors that are more frequently diagnosed in Asian countries. They uncommonly seed into the lateral ventricles, and only two other cases have been described with diffuse subependymal involvement. Unlike other malignant germ cell tumors, germinomas have marker negative CSF samples that are important in the normal diagnostic workup of diffuse subependymal lesions. Histopathologic correlation is required for definitive diagnosis in the United States and can be achieved with endoscopic tissue sampling. Germinomas are highly radio- and chemotherapy sensitive and have a fair prognosis with modern therapeutic techniques. Germinoma should be considered with simultaneous midline and diffuse ventricular lesions.
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Affiliation(s)
| | | | - Julian J Lin
- Neurosurgery, University of Illinois College of Medicine at Peoria
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38
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Bonnici-Mallia M, Kanodia AK, Rae N, Marwick C. Herpes simplex encephalitis: unusual imaging appearances. BMJ Case Rep 2016; 2016:bcr-2016-214993. [PMID: 27056942 DOI: 10.1136/bcr-2016-214993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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39
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Gao C, Wu L, Chen X, Long Y, Zhong R, Yang N, Chen Y. Hypothalamic abnormality in patients with inflammatory demyelinating disorders. Int J Neurosci 2016; 126:1036-43. [DOI: 10.3109/00207454.2015.1114484] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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40
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Magnetic resonance imaging of sellar and juxtasellar abnormalities in the paediatric population: an imaging review. Insights Imaging 2015; 6:241-60. [PMID: 25794595 PMCID: PMC4376809 DOI: 10.1007/s13244-015-0401-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 02/11/2015] [Accepted: 02/17/2015] [Indexed: 12/18/2022] Open
Abstract
The sellar and juxtasellar regions in the paediatric population are complex both anatomically and pathologically, with magnetic resonance imaging (MRI) being the "gold standard" imaging modality due to the high contrast of detail. Assessment requires a detailed understanding of the anatomy, embryology, pathophysiology and normal signal characteristics of the pituitary gland and surrounding structures in order to appropriately characterise abnormalities. This article aims to provide an overview of the imaging characteristics of developmental/congenital and acquired disease processes which affect the sellar and juxtasellar region in the paediatric population. Main Messages • The sellar region is anatomically complex and covers a wide pathology spectrum. • MRI is the key imaging modality to assess sellar and juxtasellar pathology. • Numerous developmental anomalies may not be discovered until adulthood. • Knowledge of pathology alerts and guides the clinician towards appropriate management.
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42
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Syndrome of inappropriate antidiuretic hormone secretion in patients with aquaporin-4 antibody. J Neurol 2014; 262:101-7. [PMID: 25315741 DOI: 10.1007/s00415-014-7537-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 09/30/2014] [Accepted: 10/01/2014] [Indexed: 02/08/2023]
Abstract
The objective of this study was to analyze the frequency of syndrome of inappropriate antidiuretic hormone secretion (SIADH) in patients with positive aquaporin-4 (AQP4) antibodies and evaluate the relationship between SIADH and hypothalamic lesions in patients with NMO and NMO spectrum disorder (NMOSD). AQP4 antibodies were tested by an indirect immunofluorescence assay employing HEK-293 cells transfected with recombinant human AQP4. Clinical data of patients were analyzed retrospectively. In total, 192 patients with AQP4 antibodies were certified, of which 41 patients (21.4 %) were included in the present study. Six patients (14.6 %, 6/41) met the criteria of SIADH, of which hyponatremia was mild in one patient, and severe in five. Five patients experienced confusion or decreased consciousness. Four patients were diagnosed with NMO and two were diagnosed with recurrent optic neuritis. Magnetic resonance imaging showed 11 of 41 patients (26.8 %) had hypothalamic lesions. All patients with SIADH had hypothalamic abnormalities. Hyponatremia resolved in all patients after intravenous methylprednisolone and intravenous immunoglobulin therapy. SIADH is not rare in patients with NMO/NMOSD, especially in patients with lesions close to the hypothalamus.
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43
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Moulton EA, Becerra L, Johnson A, Burstein R, Borsook D. Altered hypothalamic functional connectivity with autonomic circuits and the locus coeruleus in migraine. PLoS One 2014; 9:e95508. [PMID: 24743801 PMCID: PMC3990690 DOI: 10.1371/journal.pone.0095508] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 03/27/2014] [Indexed: 12/30/2022] Open
Abstract
The hypothalamus has been implicated in migraine based on the manifestation of autonomic symptoms with the disease, as well as neuroimaging evidence of hypothalamic activation during attacks. Our objective was to determine functional connectivity (FC) changes between the hypothalamus and the rest of the brain in migraine patients vs. control subjects. This study uses fMRI (functional magnetic resonance imaging) to acquire resting state scans in 12 interictal migraine patients and 12 healthy matched controls. Hypothalamic connectivity seeds were anatomically defined based on high-resolution structural scans, and FC was assessed in the resting state scans. Migraine patients had increased hypothalamic FC with a number of brain regions involved in regulation of autonomic functions, including the locus coeruleus, caudate, parahippocampal gyrus, cerebellum, and the temporal pole. Stronger functional connections between the hypothalamus and brain areas that regulate sympathetic and parasympathetic functions may explain some of the hypothalamic-mediated autonomic symptoms that accompany or precede migraine attacks.
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Affiliation(s)
- Eric A. Moulton
- Pain/Analgesia Imaging Neuroscience (P.A.I.N.) Group, Department of Anesthesia, Boston Children’s Hospital, Center for Pain and the Brain, Harvard Medical School, Waltham, Massachusetts, United States of America
| | - Lino Becerra
- Pain/Analgesia Imaging Neuroscience (P.A.I.N.) Group, Department of Anesthesia, Boston Children’s Hospital, Center for Pain and the Brain, Harvard Medical School, Waltham, Massachusetts, United States of America
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, Massachusetts, United States of America
| | - Adriana Johnson
- Pain/Analgesia Imaging Neuroscience (P.A.I.N.) Group, Department of Anesthesia, Boston Children’s Hospital, Center for Pain and the Brain, Harvard Medical School, Waltham, Massachusetts, United States of America
| | - Rami Burstein
- Anaesthesia & Critical Care, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - David Borsook
- Pain/Analgesia Imaging Neuroscience (P.A.I.N.) Group, Department of Anesthesia, Boston Children’s Hospital, Center for Pain and the Brain, Harvard Medical School, Waltham, Massachusetts, United States of America
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, Massachusetts, United States of America
- P.A.I.N. Group, Department of Psychiatry, McLean Hospital, Center for Pain and the Brain, Harvard Medical School, Belmont, Massachusetts, United States of America
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Rousseau-Nepton I, Kaduri S, Garfield N, Krishnamoorthy P. Hypothalamic hamartoma associated with central precocious puberty and growth hormone deficiency. J Pediatr Endocrinol Metab 2014; 27:117-21. [PMID: 23934638 DOI: 10.1515/jpem-2013-0108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 06/18/2013] [Indexed: 11/15/2022]
Abstract
Hypothalamic hamartomas (HHs) are tumors generally associated with isolated central precocious puberty (CPP). To our knowledge, we report a unique case of a girl with HH associated with CPP and growth hormone deficiency. This case highlights the complex interaction between HHs and the hypothalamic-pituitary-gonadal axis. It also emphasizes the value of close follow-up of growth velocity in these patients even after treatment of the CPP.
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45
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Vyas S, Prabhakar N, Tewari MK, Radotra BD, Khandelwal N. Hypothalamic glioma masquerading as craniopharyngioma. J Neurosci Rural Pract 2013; 4:323-5. [PMID: 24250172 PMCID: PMC3821425 DOI: 10.4103/0976-3147.118790] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Hypothalamic glioma account for 10-15% of supratentorial tumors in children. They usually present earlier (first 5 years of age) than craniopharyngioma. Hypothalamic glioma poses a diagnostic dilemma with craniopharyngioma and other hypothalamic region tumors, when they present with atypical clinical or imaging patterns. Neuroimaging modalities especially MRI plays a very important role in scrutinizing the lesions in the hypothalamic region. We report a case of a hypothalamic glioma masquerading as a craniopharyngioma on imaging along with brief review of both the tumors.
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Affiliation(s)
- Sameer Vyas
- Department of Radiodiagnosis, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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46
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Imaging findings of intraventricular and ependymal lesions. J Neuroradiol 2013; 40:229-44. [DOI: 10.1016/j.neurad.2013.06.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 06/24/2013] [Accepted: 06/24/2013] [Indexed: 11/15/2022]
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47
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Fadzli F, Ramli N, Ramli NM. MRI of optic tract lesions: review and correlation with visual field defects. Clin Radiol 2013; 68:e538-51. [PMID: 23932674 DOI: 10.1016/j.crad.2013.05.104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 05/14/2013] [Accepted: 05/24/2013] [Indexed: 11/29/2022]
Abstract
Visual field defects are a conglomerate of patterns of visual impairment derived from diseases affecting the optic nerve as it extends from the globe to the visual cortex. They are complex signs requiring perimetry or visual confrontation for delineation and are associated with diverse aetiologies. This review considers the chiasmatic and post-chiasmatic causes of visual disturbances, with an emphasis on magnetic resonance imaging (MRI) techniques. Newer MRI sequences are considered, such as diffusion-tensor imaging. MRI images are correlated with perimetric findings in order to demonstrate localization of lesions in the visual pathway. This may serve as a valuable reference tool to clinicians and radiologists in the early diagnostic process of differentiating causes of various visual field defects in daily practice.
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Affiliation(s)
- F Fadzli
- Department of Biomedical Imaging, University Malaya Research Imaging Centre, Malaysia.
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48
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Davis MA, Castillo M. Evaluation of the pituitary gland using magnetic resonance imaging: T1-weighted vs. VIBE imaging. Neuroradiol J 2013; 26:297-300. [PMID: 23859285 DOI: 10.1177/197140091302600307] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 04/23/2013] [Indexed: 11/15/2022] Open
Abstract
Volumetric interpolated breath-hold examination (VIBE) is used for abdominal imaging as a fast and efficient modality. Evaluation of brain lesions using VIBE is not common and its use for the pituitary gland has not yet been addressed. Our goal was to compare coronal T1-weighted (T1W) and VIBE images in patients undergoing studies of the pituitary gland. We hypothesized that, for this purpose, VIBE is superior to T1W images. T1W and VIBE images of the pituitary gland in 32 patients were evaluated. The two sequences were compared with specific attention to: contrast enhancement (gland and cavernous sinuses) and ability to view the anatomy of the cavernous sinuses. In patients with macroadenomas, visualization of the optic chiasm was also assessed. Images were rated as: VIBE being better, equal, or worse in comparison to T1W images. We also compared VIBE and T1W images specifically looking at micro/macro-adenomas and post-surgical patients. Statistical analysis was performed using chi-square statistics. Of the 32 patients, the VIBE sequence showed superior contrast enhancement in 18 patients, six were found as being equal to T1W, and in eight instances VIBE was found to be worse than T1W. These results were statistically significant (p=.02). When looking at micro/macro-adenomas and post-surgical patients specifically, there was a trend to VIBE being superior to T1W but these data were not statistically significant. Visualization of chiasm in macroadenomas was similar for both techniques. VIBE was significantly superior to T1W with respect to pituitary and cavernous sinus contrast enhancement and cavernous sinus anatomy. A trend towards VIBE being superior in the evaluation of adenomas (pre- and post-operative) was seen, but it was not statistically significant. This is likely due to the small population size.
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Affiliation(s)
- M A Davis
- Department of Radiology, University of North Carolina; Chapel Hill, NC, USA.
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49
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Conventional and advanced MRI features of pediatric intracranial tumors: posterior fossa and suprasellar tumors. AJR Am J Roentgenol 2013; 200:1115-24. [PMID: 23617498 DOI: 10.2214/ajr.12.9725] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE In this article, we review the most common posterior fossa and suprasellar intracranial neoplasms in the pediatric population. We briefly discuss basic MRI concepts used in the initial evaluation of a pediatric brain tumor and then discuss sophisticated MRI techniques that give insight into the physiology and chemical makeup of these tumors to help the radiologist make a more specific diagnosis. CONCLUSION Diagnosis and treatment of pediatric CNS tumors necessitate a multi-disciplinary approach and require expertise and diligence of all parties involved. Imaging is an essential component has evolved greatly over the past decade. We are becoming better at making a preoperative diagnosis of that tumor type, detecting recurrence, and guiding surgical management to avoid injury to vital brain structures.
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50
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Glastonbury CM, Osborn AG, Salzman KL. Masses and malformations of the third ventricle: normal anatomic relationships and differential diagnoses. Radiographics 2012; 31:1889-905. [PMID: 22084178 DOI: 10.1148/rg.317115083] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The third ventricle lies in the center of the brain. It is surrounded by critical nuclear structures (the hypothalamus and thalami) and important glandular structures (the pituitary and pineal glands). Although a wide array of pathologic processes may involve the third ventricle, most are extrinsic masses. By understanding the anatomic boundaries of the third ventricle and its relationship to adjacent structures, it is possible to create short lists of differential diagnoses. Third ventricle masses can be classified as arising in or immediately adjacent to one of five locations: anterior, posterior, inferior, foramen of Monro, and intraventricular. Anterior masses involve the optic and infundibular recesses, posterior masses affect or arise in the posterior commissure and pineal gland, and inferior masses involve or affect the ventricle floor. Masses may also arise at or adjacent to the foramen of Monro or entirely within the third ventricle. Of the intraventricular masses, chordoid glioma-a rare low-grade primary neoplasm-is unique to the third ventricle. Congenital malformations of the third ventricle are uncommon and are most often noted during childhood. Most commonly, these anomalies represent malformations of the neurohypophysis, which may manifest as hormonal abnormalities, or stenosis of the aqueduct of Sylvius, which manifests as dilatation of the third and lateral ventricles (hydrocephalus).
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Affiliation(s)
- Christine M Glastonbury
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, 505 Parnassus Ave, Box 0628, Room L-358, San Francisco, CA 94143-0628, USA.
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