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Malignant Gastrointestinal Neuroectodermal Tumor: A New Kid on the Block? J Comput Assist Tomogr 2022; 46:676-681. [PMID: 35759779 DOI: 10.1097/rct.0000000000001350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT Also referred to as "osteoclast-rich, clear cell sarcoma-like tumor of the gastrointestinal tract (CCSLGT)," malignant gastrointestinal neuroectodermal tumor is a newly described, rare, aggressive sarcoma that commonly arises in the small bowel, stomach, and colon. Histogenesis is likely from an autonomous nervous system-related primitive cell of neural crest origin. The hallmark genetic finding of EWS-CREB1 or EWS-ATF1 fusion transcripts clinches the diagnosis. Annular constrictive lesions tend to be smaller, show homogenous contrast enhancement on computed tomography, and may present with bowel obstruction. Larger, expansile masses tend to be exophytic and show heterogeneous contrast enhancement. Surgical resection is the mainstay of treatment. Frequent recurrences, metastases, and death from disease in 75% of patients portend a poor prognosis. Targeted chemotherapy based on specific tumor pathways is being developed.
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Chandrasinghe P. Surgical Management of Small Bowel Crohn's Disease. Front Surg 2022; 9:759668. [PMID: 35495760 PMCID: PMC9051431 DOI: 10.3389/fsurg.2022.759668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
Crohn's disease in the small bowel could present itself as an inflammatory stricture, a fibrotic stricture as penetrating disease or a combination of both. It is pertinent to differentiate the disease process as well as its extent to effectively manage the disease. Currently, a combination of medical and surgical therapies forms part of the treatment plan while the debate of which therapy is better continues. In managing the strictures, identification of the disease process through imaging plays a pivotal role as inflammatory strictures respond to anti-tumor necrosis factor (TNF) and biological agents, while fibrotic strictures require endoscopic or surgical intervention. Recent evidence suggests a larger role for surgical excision, particularly in ileocolic disease, while achieving a balance between disease clearance and bowel preservation. Several adaptations to the surgical technique, such as wide mesenteric excision, side to side or Kono-S anastomosis, and long-term metronidazole therapy, are being undertaken even though their absolute benefit is yet to be determined. Penetrating disease requires a broader multidisciplinary approach with a particular focus on nutrition, skincare, and intestinal failure management. The current guidance directs toward early surgical intervention for penetrating disease when feasible. Accurate preoperative imaging, medical management of active diseases, and surgical decision-making based on experience and evidence play a key role in success.
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Marín-Díez E, Crespo Del Pozo J. Diagnostic approach to small-bowel wall thickening: Beyond Crohn's disease and cancer. RADIOLOGIA 2021; 63:519-530. [PMID: 34801185 DOI: 10.1016/j.rxeng.2020.11.008] [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: 02/16/2020] [Accepted: 11/26/2020] [Indexed: 10/19/2022]
Abstract
Although small-bowel wall thickening is a common manifestation of Crohn's disease and tumors, many other entities can give rise to similar imaging findings. The small bowel is difficult to access by endoscopy, so radiologic imaging tests play an essential role in the diagnosis of conditions involving the small bowel. The main objectives of this paper are to explain the definition of small-bowel wall thickening, analyze the patterns of involvement seen in multidetector computed tomography (MDCT) with intravenous contrast administration, and provide an image-based review of the different causes of small-bowel wall thickening. The differential diagnosis must include many entities because wall thickening can result from immune-mediated, infectious, or vascular causes, as well as from toxicity and other lesser-known entities. As the imaging appearance of many of these conditions overlap, clinical and laboratory findings are necessary to support the imaging diagnosis.
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Affiliation(s)
- E Marín-Díez
- Servicio de Radiodiagnóstico, Hospital Universitario Marqués de Valdecilla, Santander, Spain.
| | - J Crespo Del Pozo
- Servicio de Radiodiagnóstico, Hospital Universitario Marqués de Valdecilla, Santander, Spain
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Marín-Díez E, Crespo Del Pozo J. Diagnostic approach to small-bowel wall thickening: beyond Crohn's disease and cancer. RADIOLOGIA 2021; 63:S0033-8338(21)00016-3. [PMID: 33546910 DOI: 10.1016/j.rx.2020.11.010] [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: 02/16/2020] [Revised: 09/13/2020] [Accepted: 11/26/2020] [Indexed: 11/24/2022]
Abstract
Although small-bowel wall thickening is a common manifestation of Crohn's disease and tumors, many other entities can give rise to similar imaging findings. The small bowel is difficult to access by endoscopy, so radiologic imaging tests play an essential role in the diagnosis of conditions involving the small bowel. The main objectives of this paper are to explain the definition of small-bowel wall thickening, analyze the patterns of involvement seen in multidetector computed tomography (MDCT) with intravenous contrast administration, and provide an image-based review of the different causes of small-bowel wall thickening. The differential diagnosis must include many entities because wall thickening can result from immune-mediated, infectious, or vascular causes, as well as from toxicity and other lesser-known entities. As the imaging appearance of many of these conditions overlap, clinical and laboratory findings are necessary to support the imaging diagnosis.
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Affiliation(s)
- E Marín-Díez
- Servicio de Radiodiagnóstico, Hospital Universitario Marqués de Valdecilla, Santander, España.
| | - J Crespo Del Pozo
- Servicio de Radiodiagnóstico, Hospital Universitario Marqués de Valdecilla, Santander, España
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5
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Zainudin S, Rajanthran SK, Azizan N, Hayati F, Ginawoi J, Suhaimi KA, Voo WYL, Kiram MF, Md Jaki MI, Abd Aziz SH, Nacathiran STN. An oncological curiosity of a male patient with a huge leiomyoma of the terminal ileum. Oxf Med Case Reports 2020; 2020:omaa086. [PMID: 33133619 PMCID: PMC7583423 DOI: 10.1093/omcr/omaa086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 11/29/2022] Open
Abstract
Leiomyoma is a smooth muscle tumour that can arise in any part of the body especially the uterus. Even though it is traditionally linked with hormonal influence, it can also develop in extrauterine organs with a slight female predominance. It is indistinguishable with gastrointestinal stromal tumour (GIST) histologically. We report a case of a 30-year-old gentleman who presented with a huge painful mass in the right iliac fossa. Computed tomography revealed a 10 × 10 cm homogeneous mass arising from the terminal ileum; he subsequently underwent an open right hemicolectomy. Histology showed a well-circumscribed lesion composed of interlacing bundles of smooth muscle fibres of the submucosa with positive smooth muscle actin and H-Caldesmon stains but negative for DOG-1 and CD117 (c-kit) stains which were consistent with leiomyoma. Despite its rarity, this hormone-related tumour needs to be considered regardless of gender. Immunohistochemistry is paramount as it is histologically identical to GIST.
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Affiliation(s)
- Syaza Zainudin
- Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Saravana Kumar Rajanthran
- Department of Surgery, Queen Elizabeth Hospital, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
| | - Nornazirah Azizan
- Department of Pathobiology and Medical Diagnostic, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Firdaus Hayati
- Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Joriana Ginawoi
- Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Khairunnisa Aini Suhaimi
- Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Wan Yee Lilian Voo
- Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Mohd Fazri Kiram
- Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Muhammad Izzuddin Md Jaki
- Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Siti Haja Abd Aziz
- Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
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Abstract
Small bowel tumors are rare and account for approximately 3% of all gastrointestinal tumors in the United States. The incidence of small bowel neoplasms is rising-in particular, there is a rising incidence of small bowel carcinoid tumors. This may in part be due to small bowel lesion identification in an increasing number of cross-sectional imaging studies performed for other indications as well as increased use of advanced imaging techniques to assess specifically for small bowel disease. Diagnosis is a challenge owing to nonspecific clinical manifestation, rare occurrence, and low index of clinical suspicion. Yet, various small bowel neoplasms have characteristic imaging features at CT and MRI when optimal distention of the small bowel is achieved, correlating well with features seen in gross specimens. Understanding the imaging features of small bowel neoplasms is important to improve the radiologist's ability to diagnose and characterize small bowel neoplasms. Most small bowel tumors are clinically silent for long periods, and nearly half of the benign tumors are found incidentally during surgery or at cross-sectional imaging performed for other reasons. The authors review the imaging features of common benign and malignant small bowel neoplasms to aid the radiologist in diagnosis of small bowel tumors. ©RSNA, 2020.
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Affiliation(s)
- Rahul Jasti
- From the Department of Radiology, Virginia Commonwealth University Health System, 1250 E Marshall St, Richmond, VA 23298
| | - Laura R Carucci
- From the Department of Radiology, Virginia Commonwealth University Health System, 1250 E Marshall St, Richmond, VA 23298
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Yamazawa E, Honma Y, Satomi K, Taniguchi H, Takahashi M, Yoshida A, Tominaga K, Miyakita Y, Ohno M, Asanome T, Satomi N, Narita Y. A rare case of brain metastasis from poorly differentiated small bowel adenocarcinoma. Surg Neurol Int 2019; 10:256. [PMID: 31893157 PMCID: PMC6935970 DOI: 10.25259/sni_413_2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 11/29/2019] [Indexed: 11/14/2022] Open
Abstract
Background: Small bowel adenocarcinoma (SBA) accounts for <2% of all gastrointestinal malignancies. The most common organs of SBA metastases are the abdominal lymph node, liver, and peritoneum. There have been almost no reports of brain metastases of SBA. Dabaja et al. reported 1 case of brain metastasis out of 217 SBA cases, but details of the clinical course of the case were unclear. Our case might be the first report covering the full clinical course, pathological findings, and genetic data. Here, we report a very rare case of brain metastasis from poorly differentiated SBA. Case Description: A 54-year-old man who suffered from abdominal pain and melena visited a nearby hospital. This patient had no risk factors for SBA. He underwent partial resection of the jejunum with regional lymphadenectomy and combined resection of the transverse colon. Pathological diagnosis was poorly differentiated adenocarcinoma, pT4N2M0 Stage IIIB (UICC-TNM: 8th edition). One month after curative surgery, liver metastasis was detected by a computed tomography (CT) scan, and then, palliative chemotherapy was started. During the third-line chemotherapy, a brain tumor on the left cerebellum was detected by the CT scan. Tumor resection was performed, and the histopathological features coincided with the primary jejunum tumor. Based on surgical, radiological, pathological, and genetic findings, this brain tumor was comprehensively diagnosed as a metastasis from poorly differentiated SBA. Conclusion: Here, we experienced a very rare case of brain metastasis from poorly differentiated SBA.
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Affiliation(s)
- Erika Yamazawa
- Departments of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Yoshitaka Honma
- Departments of Gastrointestinal Medical Oncology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Kaishi Satomi
- Departments of Diagnostic Pathology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Hirokazu Taniguchi
- Departments of Diagnostic Pathology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Masamichi Takahashi
- Departments of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Akihiko Yoshida
- Departments of Diagnostic Pathology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Koji Tominaga
- Department of Surgery, Denenchofu Central Hospital, Denentyoufu, Ota-ku, Tokyo, Japan
| | - Yasuji Miyakita
- Departments of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Makoto Ohno
- Departments of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Taku Asanome
- Departments of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Natsuko Satomi
- Departments of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
| | - Yoshitaka Narita
- Departments of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tsukiji, Chuo-ku, Japan
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Masselli G, Guida M, Laghi F, Polettini E, Gualdi G. Magnetic Resonance of Small Bowel Tumors. Magn Reson Imaging Clin N Am 2019; 28:75-88. [PMID: 31753238 DOI: 10.1016/j.mric.2019.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Tumors of the small intestine represent less than 5% of all gastrointestinal tract neoplasms. Magnetic resonance (MR) imaging is rapidly increasing clinical acceptance to evaluate the small bowel and can be the initial imaging method to investigate small bowel diseases. MR examinations may provide the first opportunity to detect and characterize tumors of the small bowel. Intraluminal and extraluminal MR findings, combined with contrast enhancement and functional information, allow accurate diagnoses and consequently characterization of small bowel neoplasms. This article describes the MR findings of primary small bowel neoplasms and the MR findings for the differential diagnosis are discussed.
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Affiliation(s)
- Gabriele Masselli
- Radiology Department, Umberto I Hospital Sapienza University, Viale del Policlinico 155, Rome 00161, Italy.
| | - Marianna Guida
- Radiology Department, Umberto I Hospital Sapienza University, Viale del Policlinico 155, Rome 00161, Italy
| | - Francesca Laghi
- Radiology Department, Umberto I Hospital Sapienza University, Viale del Policlinico 155, Rome 00161, Italy
| | - Elisabetta Polettini
- Radiology Department, Umberto I Hospital Sapienza University, Viale del Policlinico 155, Rome 00161, Italy
| | - Gianfranco Gualdi
- Radiology Department, Umberto I Hospital Sapienza University, Viale del Policlinico 155, Rome 00161, Italy
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Abstract
Although the small intestine accounts for over 90% of the surface area of the alimentary tract, tumors of the small intestine represent less than 5% of all gastrointestinal tract neoplasms. Common small bowel tumors typically are well evaluated with cross-sectional imaging modalities such as CT and MR, but accurate identification and differentiation can be challenging. Differentiating normal bowel from abnormal tumor depends on imaging modality and the particular technique. While endoscopic evaluation is typically more sensitive for the detection of intraluminal tumors that can be reached, CT and MR, as well as select nuclear medicine studies, remain superior for evaluating extraluminal neoplasms. Understanding the imaging characteristics of typical benign and malignant small bowel tumors is critical, because of overlapping features and associated secondary complications.
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Affiliation(s)
- Eric A Williams
- Department of Radiology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
| | - Andrew W Bowman
- Department of Radiology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL, 32224, USA.
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Kim JS, Park SH, Hansel S, Fletcher JG. Imaging and Screening of Cancer of the Small Bowel. Radiol Clin North Am 2017; 55:1273-1291. [DOI: 10.1016/j.rcl.2017.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Dohan A, El Fattach H, Barat M, Guerrache Y, Eveno C, Dautry R, Mulé S, Boudiaf M, Hoeffel C, Soyer P. Neuroendocrine tumors of the small bowel: evaluation with MR-enterography. Clin Imaging 2016; 40:541-7. [DOI: 10.1016/j.clinimag.2015.12.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 12/20/2015] [Indexed: 02/07/2023]
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13
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Nickalls OJ, Tan CL, Thian YL. A Torted Ruptured Intra-abdominal Testicular Seminoma Presenting As An Acute Abdomen. J Radiol Case Rep 2015; 9:21-8. [PMID: 27200173 DOI: 10.3941/jrcr.v9i12.2589] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The susceptibility of the undescended testis to malignant transformation is well documented. The most common location of the undescended testis is within the inguinal canal, with only a minority located within the abdominal cavity. When a testicular mass develops, the risk of torsion increases. We describe a large intra-abdominal testicular seminoma that had undergone torsion, rupture and haemorrhage, presenting as an acute abdomen. A 30 year old man presented to the emergency department with right iliac fossa pain. Computed tomography in the emergency department showed haemoperitoneum and a torted large left testicular mass, likely malignant. The patient underwent laparotomy and excision of the mass. Histologic examination revealed a grossly enlarged seminomatous testis which had torted and ruptured. While pre-operative imaging diagnosis of an intra-abdominal testicular seminoma has been published, reports are few. To the best of the author's knowledge pre-operative imaging diagnosis of a malignant testicular mass with torsion and intra-abdominal haemorrhage presenting as an acute abdomen has not been described before.
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Affiliation(s)
| | - Char Loo Tan
- Department of Pathology, National University Hospital, Singapore
| | - Yee Liang Thian
- Department of Diagnostic Radiology, National University Hospital, Singapore
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14
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Radiological Features of Gastrointestinal Lymphoma. Gastroenterol Res Pract 2015; 2016:2498143. [PMID: 26819598 PMCID: PMC4706984 DOI: 10.1155/2016/2498143] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 09/20/2015] [Indexed: 12/11/2022] Open
Abstract
Gastrointestinal lymphomas represent 5–20% of extranodal lymphomas and mainly occur in the stomach and small intestine. Clinical findings are not specific, thus often determining a delay in the diagnosis. Imaging features at conventional and cross-sectional imaging must be known by the radiologist since he/she plays a pivotal role in the diagnosis and disease assessment, thus assisting in the choice of the optimal treatment to patients. This review focuses on the wide variety of imaging presentation of esophageal, gastric, and small and large bowel lymphoma presenting their main imaging appearances at conventional and cross-sectional imaging, mainly focusing on computed tomography and magnetic resonance, helping in the choice of the best imaging technique for the disease characterization and assessment and the recognition of potential complications.
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15
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Small bowel masses. Cancer Imaging 2015. [PMCID: PMC4601653 DOI: 10.1186/1470-7330-15-s1-o10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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16
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Liu B, Ramalho M, AlObaidy M, Busireddy KK, Altun E, Kalubowila J, Semelka RC. Gastrointestinal imaging-practical magnetic resonance imaging approach. World J Radiol 2014; 6:544-566. [PMID: 25170393 PMCID: PMC4147436 DOI: 10.4329/wjr.v6.i8.544] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/15/2014] [Accepted: 06/03/2014] [Indexed: 02/06/2023] Open
Abstract
Over the past two decades, advances in cross-sectional imaging such as computed tomography and magnetic resonance imaging (MRI) have dramatically changed the concept of gastrointestinal imaging. MR is playing an increasing role in the evaluation of gastrointestinal disorders. MRI combines the advantages of excellent soft-tissue contrast, noninvasiveness, functional information and lack of ionizing radiation. Furthermore, recent developments of MRI have led to improved spatial and temporal resolution as well as decreased motion artifacts. In this article we describe the technical aspects of gastrointestinal MRI and present a practical approach for a well-known spectrum of gastrointestinal disease processes.
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Masselli G, Polettini E, Laghi F, Monti R, Gualdi G. Noninflammatory conditions of the small bowel. Magn Reson Imaging Clin N Am 2013; 22:51-65. [PMID: 24238132 DOI: 10.1016/j.mric.2013.07.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Magnetic resonance (MR) imaging has been playing an evolving role in evaluating noninflammatory small-bowel conditions, such as tumors and malabsorption syndrome. MR imaging has shown to be superior to other diagnostic methods in identifying tumors of the small bowel. MR enterography and MR enteroclysis are both valid for studying noninflammatory conditions of the small intestine, although MR enteroclysis may be considered the modality of choice because of its accuracy in the diagnosis of small-bowel neoplasms. Intraluminal and extraluminal MR findings, combined with contrast-agent enhancement and functional information, help to make an accurate diagnosis and consequently to characterize small-bowel diseases.
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Affiliation(s)
- Gabriele Masselli
- Radiology Department, Umberto I hospital, Sapienza University, Via del Policlinico 155, Rome 00161, Italy.
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Masselli G, Gualdi G. CT and MR enterography in evaluating small bowel diseases: when to use which modality? ACTA ACUST UNITED AC 2013; 38:249-59. [PMID: 23011551 DOI: 10.1007/s00261-012-9961-8] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
MR and CT techniques optimized for small bowel imaging are playing an increasing role in the evaluation of small bowel disorders. Several studies have shown the advantages of these techniques over traditional barium fluoroscopic examinations due to improvements in spatial and temporal resolution combined with improved bowel distending agents. The preference of MR vs. CT has been geographical and based on expertise and public policy. With the increasing awareness of radiation exposure, there has been a more global interest in implementing techniques that either reduce or eliminate radiation exposure. This is especially important in patients with chronic diseases such as inflammatory bowel disease who may require multiple studies over a lifetime or in studies that require sequential imaging time points such as in assessment of gastrointestinal motility. MRI has many properties that make it well suited to imaging of the small bowel: the lack of ionizing radiation, the improved tissue contrast that can be obtained by using a variety of pulse sequences, and the ability to perform real time functional imaging. Moreover, MR modalities allow visualization of the entire bowel, without overlapping bowel loops, as well as the detection of both intra- and extraluminal abnormalities.The intra- and extraluminal MR findings, combined with contrast enhancement and functional information, help to make an accurate diagnosis and consequently characterize small bowel diseases.
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Affiliation(s)
- Gabriele Masselli
- Radiology Department, Umberto I Hospital. La Sapienza University, Viale del Policlinico 155, 00161, Rome, Italy.
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Masselli G, Casciani E, Polettini E, Laghi F, Gualdi G. Magnetic resonance imaging of small bowel neoplasms. Cancer Imaging 2013; 13:92-9. [PMID: 23524074 PMCID: PMC3607252 DOI: 10.1102/1470-7330.2013.0012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Magnetic resonance (MR) imaging is rapidly increasing clinical acceptance to evaluate the small bowel and can be the initial imaging method to investigate small bowel diseases. MR examinations may provide the first opportunity to detect and characterize tumours of the small bowel. Intra- and extraluminal MR findings, combined with contrast enhancement and functional information, help to make an accurate diagnosis and consequently characterize small bowel neoplasms. MR enteroclysis should be recommended for the initial investigation in patients suspected of having small bowel tumours. In this article, the MR findings of primary small bowel neoplasms are described and the MR findings for the differential diagnosis are discussed.
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Affiliation(s)
- Gabriele Masselli
- Radiology Department, Umberto I Hospital Sapienza University, Viale del Policlinico 155, 00161 Rome, Italy.
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