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Abdelhamed W, El-Kassas M. Rare liver diseases in Egypt: Clinical and epidemiological characterization. Arab J Gastroenterol 2024; 25:75-83. [PMID: 38228442 DOI: 10.1016/j.ajg.2023.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/04/2023] [Accepted: 12/16/2023] [Indexed: 01/18/2024]
Abstract
Illnesses that afflict a tiny number of individuals are referred to as rare diseases (RDs), sometimes called orphan diseases. The local healthcare systems are constantly under financial, psychological, and medical strain due to low incidence rates, unusual presentations, flawed diagnostic standards, and a lack of treatment alternatives for these RDs. The effective management of the once widely spread viral hepatitis B and C has altered the spectrum of liver diseases in Egypt during the last several years. The detection of uncommon disorders such as autoimmune, cholestatic, and hereditary liver diseases has also been made easier by the increasing knowledge and greater accessibility of specific laboratory testing. Finally, despite Egypt's large population, there are more uncommon liver disorders than previously thought. This review article discusses the clinical and epidemiological characteristics of a few uncommon liver disorders and the information currently accessible concerning these illnesses in Egypt.
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Affiliation(s)
- Walaa Abdelhamed
- Endemic Medicine Department, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Mohamed El-Kassas
- Endemic Medicine Department, Faculty of Medicine, Helwan University, Cairo, Egypt.
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2
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Kerkar A, Gupta P, Azeez A, Bhatia A, Gupta N, Bansal D. Decoding the rhabdoid riddle in liver: A rare case of primary hepatic malignant rhabdoid tumor with a comprehensive literature review. Diagn Cytopathol 2024; 52:E69-E75. [PMID: 38059387 DOI: 10.1002/dc.25263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 12/08/2023]
Abstract
Malignant rhabdoid tumor of the liver is a rare, highly aggressive primary hepatic malignancy occurring primarily in infants. Establishing a definitive diagnosis is challenging due to its rarity, non-specific clinicoradiologic findings, and overlapping morphologic features. Herein, we present the cytomorphologic and immunocytochemical characteristics of a rare case of primary hepatic Malignant rhabdoid tumor (MRT) in an infant. A 5-month-old female child presented with progressively increasing firm mass in the upper abdomen, progressive pallor, sudden onset respiratory distress, and difficulty feeding. On examination, the child had massive, firm nodular hepatomegaly. Ultrasonography of the abdomen revealed a heterogeneously hypoechoic lesion in the left lobe of the liver. Serum alpha-fetoprotein levels were within normal limits. An ultrasound-guided fine-needle aspiration cytology (FNAC) from the liver mass showed predominantly dispersed large, markedly pleomorphic tumor cells with round to oval eccentrically placed nuclei, prominent nucleoli, and moderate cytoplasm. On immunocytochemistry, tumor cells showed positivity for vimentin, cytokeratin, and EMA and demonstrated a loss of INI1, confirming the diagnosis of MRT. The index report highlights the distinctive clinicopathological features of a hepatic malignant rhabdoid tumor along with the key differential diagnoses, which may pose a diagnostic conundrum. A high index of clinical suspicion and a thorough understanding of its cytomorphological and immunochemical characteristics are crucial for an accurate diagnosis.
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Affiliation(s)
- Aadya Kerkar
- Department of Cytology and Gynecological Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Parikshaa Gupta
- Department of Cytology and Gynecological Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ajmeera Azeez
- Department of Pediatrics, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Anmol Bhatia
- Department of Radiodiagnosis, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Nalini Gupta
- Department of Cytology and Gynecological Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Deepak Bansal
- Department of Pediatrics, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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3
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Glembocki AI, Somers GR. Prognostic and predictive biomarkers in paediatric solid tumours. Pathology 2024; 56:283-296. [PMID: 38216399 DOI: 10.1016/j.pathol.2023.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 01/14/2024]
Abstract
Characterisation of histological, immunohistochemical and molecular prognostic and predictive biomarkers has contributed significantly to precision medicine and better outcomes in the management of paediatric solid tumours. Prognostic biomarkers allow predictions to be made regarding a tumour's aggressiveness and clinical course, whereas predictive biomarkers help determine responses to a specific treatment. This review summarises prognostic biomarkers currently used in the more common paediatric solid tumours, with a brief commentary on the most relevant less common predictive biomarkers. MYCN amplification is the most important genetic alteration in neuroblastoma prognosis, and the histological classification devised by Shimada in 1999 is still used in routine diagnosis. Moreover, a new subgrouping of unfavourable histology neuroblastoma enables immunohistochemical characterisation of tumours with markedly different genetic features and prognosis. The predominant histology and commonly observed cytogenetic abnormalities are recognised outcome predictors in Wilms tumour. Evaluation for anaplasia, which is tightly associated with TP53 gene mutations and poor outcomes, is central in both the International Society of Paediatric Oncology and the Children's Oncology Group approaches to disease classification. Characterisation of distinct genotype-phenotype subclasses and critical mutations has expanded overall understanding of hepatoblastoma outcomes. The C1 subclass hepatoblastoma and CTNNB1 mutations are associated with good prognosis. In contrast, the C2 subclass, NFE2L2 mutations, TERT promoter mutations and high expression of oncofetal proteins and stem cell markers are associated with poor outcomes. Risk stratification in sarcomas is highly variable depending on the entity. The prognosis of rhabdomyosarcoma, for example, primarily depends on histological and molecular characteristics. Advances in our understanding of clinically significant biomarkers will translate into more precise diagnoses, improved risk stratification and more effective and less toxic treatment in this challenging group of patients.
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Affiliation(s)
- Aida I Glembocki
- Division of Pathology, Department of Paediatric Laboratory Medicine, Hospital for Sick Children, Toronto, ON, Canada
| | - Gino R Somers
- Division of Pathology, Department of Paediatric Laboratory Medicine, Hospital for Sick Children, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.
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Maxwell R, Häberle B, Kappler R, von Schweinitz D, Rassner M, von Frowein J, Schmid I. Hepatoblastoma Relapse-Findings from the German HB99 Trial and the German Liver Tumor Registry. Cancers (Basel) 2024; 16:696. [PMID: 38398087 PMCID: PMC10886809 DOI: 10.3390/cancers16040696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/19/2023] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
Survival rates for HB patients have improved; however, outcomes for patients who relapse remain poor. A retrospective review of information gathered for the HB99 study and the German Liver Tumor Registry identified 25 relapse patients (6.9%, 25/362). The median time from initial diagnosis to first relapse was 13 months (range: 5-66 months). Two patients relapsed >36 months after initial diagnosis. A total of 68% (17/25) of relapses were metastatic, 24% local, and 8% combined. 67% of local relapses were alive at the last follow-up, in contrast to 53% of metastatic and 0% of combined relapses. At the last follow-up, 73% (8/11) of patients with lung relapses were still alive (0/4 with peritoneal, 1/2 with CNS involvement). A total of 20% of the patients had AFP-negative relapses, 64% of the relapse patients achieved a second complete remission, 69% were still in complete second remission at the last follow-up (median FU of 66 months), and 83% (5/6) of irinotecan-naïve patients who received relapse treatment including irinotecan were in second complete remission at the last follow-up. The 3-year overall survival/event-free survival from relapse was 63%/48% respectively. There is a good chance that HB patients will achieve a second remission despite a first relapse. However, patients who suffer further relapses tend to have a poorer prognosis.
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Affiliation(s)
- Rebecca Maxwell
- Department of Pediatrics, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, Lindwurmstraße 4, 80337 Munich, Germany; (R.M.); (M.R.); (J.v.F.)
| | - Beate Häberle
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany; (B.H.); (R.K.); (D.v.S.)
| | - Roland Kappler
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany; (B.H.); (R.K.); (D.v.S.)
| | - Dietrich von Schweinitz
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany; (B.H.); (R.K.); (D.v.S.)
| | - Mark Rassner
- Department of Pediatrics, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, Lindwurmstraße 4, 80337 Munich, Germany; (R.M.); (M.R.); (J.v.F.)
| | - Julia von Frowein
- Department of Pediatrics, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, Lindwurmstraße 4, 80337 Munich, Germany; (R.M.); (M.R.); (J.v.F.)
| | - Irene Schmid
- Department of Pediatrics, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, Lindwurmstraße 4, 80337 Munich, Germany; (R.M.); (M.R.); (J.v.F.)
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Thway K, Fisher C. A Practical Approach to Small Round Cell Tumors Involving the Gastrointestinal Tract and Abdomen. Surg Pathol Clin 2023; 16:765-778. [PMID: 37863565 DOI: 10.1016/j.path.2023.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
Small round cell neoplasms are diagnostically challenging owing to their clinical and pathologic overlap, necessitating use of large immunopanels and molecular analysis. Ewing sarcomas (ES) are the most common, but EWSR1 is translocated in several diverse neoplasms, some with round cell morphology. Molecular advances enable classification of many tumors previously termed 'atypical ES'. The current WHO Classification includes two new undifferentiated round cell sarcomas (with CIC or BCOR alterations), and a group of sarcomas in which EWSR1 partners with non-Ewing family transcription factor genes. This article reviews the spectrum of small round cell sarcomas within the gastrointestinal tract and abdomen.
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Affiliation(s)
- Khin Thway
- Sarcoma Unit, Royal Marsden Hospital, London SW3 6JJ, UK; Division of Molecular Pathology, The Institute of Cancer Research, London SW3 6JB, UK.
| | - Cyril Fisher
- Division of Molecular Pathology, The Institute of Cancer Research, London SW3 6JB, UK; Department of Pathology, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2GW, UK
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Feng X, Tao J, Zhou Q, Qiao YD, He LJ, Zhang N. Desmoplastic small round cell tumor of the liver: diagnosing a rare case on liver biopsy. Diagn Pathol 2023; 18:84. [PMID: 37516860 PMCID: PMC10386280 DOI: 10.1186/s13000-023-01373-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 07/11/2023] [Indexed: 07/31/2023] Open
Abstract
Desmoplastic small round-cell tumors (DSRCT) frequently develop in the retroperitoneum, pelvis, omentum, and mesentery. Here, we present an unusual case of primary DSRCT in the liver. The patient was an 11-year-old boy with multiple solid masses in the liver parenchyma. The tumor in the needle biopsy had a histology revealing a small round cell morphology and desmoplasia. It shows the immunohistochemical features of DSRCT and documentation of EWSR1-WT1 fusion.A potential diagnostic pitfall is exerted when evaluating liver biopsy, in which DSRCT is a great mimicker and may be easily confused with more common liver malignancies of childhood, such as hepatoblastoma, calcifying nested stromal-epithelial tumor, undifferentiated embryonal sarcoma, and other small round cell tumors, as well as the fibrolamellar variant of hepatocellular carcinoma. This distinction is critical because an accurate therapeutic approach requires a correct diagnosis.
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Affiliation(s)
- Xiao Feng
- Department of Pathology, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Jing Tao
- Department of Pathology, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Qiang Zhou
- Department of Pathology, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Yi-Dan Qiao
- Department of Pathology, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Le-Jian He
- Department of Pathology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China.
| | - Nan Zhang
- Department of Pathology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China.
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7
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Sharma R, Thirunavukkarasu B, Nalwa A, Pathak M, Garg PK. Malignant rhabdoid tumour of liver: Conundrum on ascitic fluid. Diagn Cytopathol 2023; 51:276-279. [PMID: 36786382 DOI: 10.1002/dc.25115] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 01/09/2023] [Accepted: 01/31/2023] [Indexed: 02/15/2023]
Abstract
Ascitic fluid analysis is an important tool for diagnosis and staging. Cytological analysis is routinely done as a part of workup for ascites. This is challenging in paediatric malignancies where multiple differentials need to be considered at times with limited cellularity. We present a case of malignant rhabdoid tumour of liver in a young child presenting with abdominal lump and ascites. The diagnosis was offered on ascitic fluid cytology based on cytomorphology, supporting immunohistochemistry and later confirmed on biopsy. This report briefly discusses its differentials and approach to diagnosis.
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Affiliation(s)
- Rashim Sharma
- Department of Pathology and Lab Medicine, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
| | | | - Aasma Nalwa
- Department of Pathology and Lab Medicine, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
| | - Manish Pathak
- Department of Paediatric Surgery, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
| | - Pawan Kumar Garg
- Department of Diagnostic and Interventional Radiology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
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8
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Outcomes of Patients Treated for Hepatoblastoma with Low Alpha-Fetoprotein and/or Small Cell Undifferentiated Histology: A Report from the Children's Hepatic Tumors International Collaboration (CHIC). Cancers (Basel) 2023; 15:cancers15020467. [PMID: 36672416 PMCID: PMC9857147 DOI: 10.3390/cancers15020467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/24/2022] [Accepted: 12/25/2022] [Indexed: 01/15/2023] Open
Abstract
Small cell undifferentiated (SCU) histology and alpha-fetoprotein (AFP) levels below 100 ng/mL have been reported as poor prognostic factors in hepatoblastoma (HB); subsequent studies reported SMARCB1 mutations in some SCU HBs confirming the diagnosis of rhabdoid tumor. The Children's Hepatic tumors International Collaboration (CHIC) database was queried for patients with HB who had AFP levels less than 100 ng/mL at diagnosis or were historically diagnosed as SCU HBs. Seventy-three of 1605 patients in the CHIC database were originally identified as SCU HB, HB with SCU component, or HB with low AFP levels. Upon retrospective review, they were re-classified as rhabdoid tumors (n = 11), HB with SCU component (n = 41), and HB with low AFP (n = 14). Seven were excluded for erroneously low AFP levels. Overall survival was 0% for patients with rhabdoid tumors, 76% for patients with HB with SCU component, and 64% for patients with HB with AFP less than 100 ng/mL. Patients with HB with SCU component or low AFP should be assessed for SMARCB1 mutations and, if confirmed, treated as rhabdoid tumors. When rhabdoid tumors are excluded, the presence of SCU component and low AFP at diagnosis were not associated with poor prognosis in patients diagnosed with HB.
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9
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Lau JF, Vokuhl C. [Epithelial childhood liver tumors : An overview of the new WHO classification for pediatric tumors]. DER PATHOLOGE 2022; 43:202-209. [PMID: 35384506 DOI: 10.1007/s00292-022-01067-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Pediatric liver tumors are very rare tumors and account for less than 1% of all childhood malignancies. By far the most common tumors are hepatoblastomas. This review discusses epithelial malignant childhood liver tumors, with particular attention to the morphology of the different hepatoblastoma subtypes. In addition, other malignant liver tumors such as the so-called hepatocellular tumor NOS and the second-most common childhood liver tumor, the hepatocellular carcinoma, are discussed. In addition to the typical morphological characteristics, the immunohistochemical and molecular aspects are also be presented, which can help to distinguish these entities with often overlapping morphology.
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Affiliation(s)
- J F Lau
- Sektion Kinderpathologie, Institut für Pathologie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland
| | - C Vokuhl
- Sektion Kinderpathologie, Institut für Pathologie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland.
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Trobaugh-Lotrario A, Katzenstein HM, Ranganathan S, Lopez-Terrada D, Krailo MD, Piao J, Chung N, Randazzo J, Malogolowkin MH, Furman WL, McCarville EB, Towbin AJ, Tiao GM, Dunn SP, Langham MR, McGahren ED, Feusner J, Rodriguez-Galindo C, Meyers RL, O'Neill AF, Finegold MJ. Small Cell Undifferentiated Histology Does Not Adversely Affect Outcome in Hepatoblastoma: A Report From the Children's Oncology Group (COG) AHEP0731 Study Committee. J Clin Oncol 2022; 40:459-467. [PMID: 34874751 PMCID: PMC8824398 DOI: 10.1200/jco.21.00803] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 10/09/2021] [Accepted: 11/01/2021] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Small cell undifferentiated (SCU) histology in hepatoblastoma (HB) tumors has historically been associated with a poor prognosis. Tumors from patients enrolled on Children's Oncology Group (COG) study AHEP0731 underwent institutional and central pathologic review for identification of SCU histology. PATIENTS AND METHODS Patients with SCU histology identified at the local treating institution who had otherwise low-risk tumors were upstaged to the intermediate-risk treatment stratum, whereas those only identified by retrospective central review were treated per the local institution as low-risk. Patients with otherwise intermediate- or high-risk tumors remained in that treatment stratum, respectively. Central review was to be performed for all tissue samples obtained at any time point. Treatment was per local review, whereas analysis of outcome was based on central review. RESULTS Thirty-five patients had some elements (1%-25%) of SCU identified on central review of diagnostic specimens. All but two patient tissue sample retained nuclear INI1 expression. The presence of SCU histology did not correlate with age, alpha-fetoprotein level at diagnosis, or sex. The presence of SCU did not affect event-free survival (EFS). EFS at 5 years for patients with low-risk, intermediate-risk, and high-risk with SCU HB was 86% (95% CI, 33 to 98), 81% (95% CI, 57 to 92), and 29% (95% CI, 4 to 61), respectively, compared with EFS at 5 years for patients without SCU enrolled with low-risk, intermediate-risk, and high-risk of 87% (95% CI, 72 to 95), 88% (95% CI, 79 to 94), and 55% (95% CI, 32 to 74; P = .17), respectively. CONCLUSION The presence of SCU histology in HB does not appear to adversely affect outcome. Future studies should be able to treat patients with SCU HB according to risk stratification without regard to the presence of SCU histology.
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Affiliation(s)
| | | | | | | | - Mark D. Krailo
- University of Southern California Keck School of Medicine, Los Angeles, CA
| | - Jin Piao
- Children's Oncology Group, Monrovia, CA
| | | | | | | | - Wayne L. Furman
- University of Tennessee Health Science Center and St Jude Children's Research Hospital, Memphis, TN
| | - Elizabeth B. McCarville
- University of Tennessee Health Science Center and St Jude Children's Research Hospital, Memphis, TN
| | | | - Greg M. Tiao
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Stephen P. Dunn
- AI duPont Hospital for Children and Thomas Jefferson University, Philadelphia, PA
| | - Max R. Langham
- University of Tennessee Health Science Center and St Jude Children's Research Hospital, Memphis, TN
| | - Eugene D. McGahren
- University of Virginia Children's Hospital and University of Virginia, Charlottesville, VA
| | | | - Carlos Rodriguez-Galindo
- University of Tennessee Health Science Center and St Jude Children's Research Hospital, Memphis, TN
| | | | - Allison F. O'Neill
- Dana-Farber Cancer Institute, and Boston Children's Hospital, Boston, MA
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Abstract
Hepatoblastoma (HB) is the most common malignancy within the rare cohort of
pediatric primary liver tumors. It may arise sporadically or in association with
germline mutations in specific genetic syndromes. Histogenesis recapitulates
fetal hepatic development, however, this tumor can exhibit a markedly
heterogeneous appearance both macroscopically and under the microscope.
Histologic subtypes are classified based on morphologic appearance, with
additional discrimination based on emerging molecular and immunohistochemical
features. Numerous diagnostic pitfalls exist from clinical presentation through
to ancillary testing; at all stages, the surgical pathologist must be discerning
and open to collaboration with colleagues of different specialties. Problematic
areas include the adequacy of tissue sampling, correlation of histology with
radiologic appearance and alpha feto-protein (AFP) serology, forming a
diagnostic consensus within the pediatric pathology community and choosing a
shrewd immunohistochemical panel. This review discusses the sequence of events
leading up to histologic assessment, and the nuances of microscopic evaluation.
Along the way, pitfalls are highlighted, providing a tool for the surgical
pathologists to support their individual approach.
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Affiliation(s)
| | - Consolato M. Sergi
- Anatomic Pathology Division, Children's Hospital of Eastern Ontario,
Ottawa, ON, Canada
- Consolato M. Sergi, Chief, Anatomic
Pathology Division, Pediatric Pathologist, Children’s Hospital of Eastern
Ontario (CHEO), 401 Smyth Road Ottawa, ON, K1H 8L1, Canada.
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12
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Fuchs J, Murtha-Lemekhova A, Kessler M, Ruping F, Günther P, Fichtner A, Sturm D, Hoffmann K. A Systematic Review and Meta-Analysis of Malignant Rhabdoid and Small Cell Undifferentiated Liver Tumors: A Rational for a Uniform Classification. Cancers (Basel) 2022; 14:cancers14020272. [PMID: 35053437 PMCID: PMC8774069 DOI: 10.3390/cancers14020272] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Malignant rhabdoid tumors of the liver are very rare pediatric liver tumors with a devastating prognosis. It is currently unclear which histological subtypes of pediatric liver tumors belong to this entity and how these tumors should be treated. In this systematic review with meta-analysis, we analyzed all reports on pediatric patients with malignant rhabdoid liver tumors, but also with so-called small cell undifferentiated liver tumors. This is another rare liver tumor subtype that has recently been regarded to belong to the entity of rhabdoid tumors by some authors. The main result of this study is that these two tumor subtypes show large overlap on several levels and even mixtures of both histological patterns have been documented. Our meta-analysis provides an evidence base for the recommendation to classify these two tumor subtypes as one entity. We showed that treatment of these tumors with hepatoblastoma directed chemotherapy is ineffective and that a therapy with chemotherapy regimens initially applied for soft tissue sarcoma is associated with a significantly better survival. This study represents the highest level of evidence available for these rare liver tumors. Abstract Background: Rhabdoid liver tumors in children are rare and have a devastating prognosis. Reliable diagnosis and targeted treatment approaches are urgently needed. Immunohistochemical and genetic studies suggest that tumors formerly classified as small cell undifferentiated hepatoblastoma (SCUD) belong to the entity of malignant rhabdoid tumors of the liver (MRTL), in contrast to hepatoblastomas with focal small cell histology (F-SCHB). This may have relevant implications on therapeutic approaches. However, studies with larger cohorts investigating the clinical relevance of the histological and genetic similarities for patients are lacking. Purpose: To analyze possible similarities and differences in patient characteristics, tumor biology, response to treatment, and clinical course of patients with MRTL, SCUD and F-SCHB. Applied therapeutic regimens and prognostic factors are investigated. Methods: A systematic literature search of MEDLINE, Web of Science, and CENTRAL was performed for this PRISMA-compliant systematic review. All studies of patients with MRTL, SCUD and F-SCHB that provided individual patient data were included. Demographic, histological, and clinical characteristics of the three subgroups were compared. Overall survival (OS) was estimated with the Kaplan–Meier method and prognostic factors investigated in a multivariable Cox regression model. Protocol registered: PROSPERO 2021 CRD42021258760. Results: Fifty-six studies with a total of 118 patients were included. The two subgroups MRTL and SCUD did not differ significantly in baseline patient characteristics. However, heterogenous diagnostic and therapeutic algorithms were applied. Large histological and clinical overlap between SCUD and MRTL could be shown. Two-year OS was 22% for MRTL and 13% for SCUD, while it was significantly better in F-SCHD (86%). Chemotherapeutic regimens for hepatoblastoma proved to be ineffective for both SCUD and MRTL, but successful in F-SCHB. Soft tissue sarcoma chemotherapy was associated with significantly better survival for MRTL and SCUD, but was rarely applied in SCUD. Patients who did not undergo surgical tumor resection had a significantly higher risk of death. Conclusions: While F-SCHB is a subtype of HB, SCUD should be classified and treated as a type of MRTL. Surgical tumor resection in combination with intensive, multi-agent chemotherapy is the only chance for cure of these tumors. Targeted therapies are highly needed to improve prognosis. Currently, aggressive regimens including soft tissue sarcoma chemotherapy, extensive resection, radiotherapy or even liver transplantation are the only option for affected children.
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Affiliation(s)
- Juri Fuchs
- Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, 69120 Heidelberg, Germany; (J.F.); (A.M.-L.)
- Generating Evidence for Diagnosis and Therapy of RarE LIVEr Disease: The RELIVE Initiative for Systematic Reviews and Meta-Analyses, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.K.); (P.G.); (A.F.)
| | - Anastasia Murtha-Lemekhova
- Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, 69120 Heidelberg, Germany; (J.F.); (A.M.-L.)
- Generating Evidence for Diagnosis and Therapy of RarE LIVEr Disease: The RELIVE Initiative for Systematic Reviews and Meta-Analyses, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.K.); (P.G.); (A.F.)
| | - Markus Kessler
- Generating Evidence for Diagnosis and Therapy of RarE LIVEr Disease: The RELIVE Initiative for Systematic Reviews and Meta-Analyses, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.K.); (P.G.); (A.F.)
- Department of General, Visceral and Transplantation Surgery, Division of Pediatric Surgery, University Hospital Heidelberg, 69120 Heidelberg, Germany;
| | - Fabian Ruping
- Department of General, Visceral and Transplantation Surgery, Division of Pediatric Surgery, University Hospital Heidelberg, 69120 Heidelberg, Germany;
| | - Patrick Günther
- Generating Evidence for Diagnosis and Therapy of RarE LIVEr Disease: The RELIVE Initiative for Systematic Reviews and Meta-Analyses, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.K.); (P.G.); (A.F.)
- Department of General, Visceral and Transplantation Surgery, Division of Pediatric Surgery, University Hospital Heidelberg, 69120 Heidelberg, Germany;
| | - Alexander Fichtner
- Generating Evidence for Diagnosis and Therapy of RarE LIVEr Disease: The RELIVE Initiative for Systematic Reviews and Meta-Analyses, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.K.); (P.G.); (A.F.)
- Department of Pediatrics I, Division of Pediatric Gastroenterology, University Children’s Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Dominik Sturm
- Department of Pediatric Hematology and Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany;
- Hopp Children’s Cancer Center (KiTZ), 69120 Heidelberg, Germany
| | - Katrin Hoffmann
- Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, 69120 Heidelberg, Germany; (J.F.); (A.M.-L.)
- Generating Evidence for Diagnosis and Therapy of RarE LIVEr Disease: The RELIVE Initiative for Systematic Reviews and Meta-Analyses, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.K.); (P.G.); (A.F.)
- Correspondence: ; Tel.: +49-6221-566110; Fax: +49-6221-564215
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13
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Abstract
Malignant primary liver tumors are rare in children. Yet a wide histologic spectrum is seen, particularly in hepatoblastoma, the most common malignant liver tumor in children. Furthermore, there can be significant morphologic overlap with hepatocellular carcinoma, the second most common pediatric liver malignancy, and tumors with hybrid features of hepatoblastoma and hepatocellular carcinoma are also reported (currently placed in the provisional category of malignant hepatocellular neoplasm, not otherwise specified). This review provides detailed morphologic descriptions and updates in the evolving clinical context of these tumors, and presents recent molecular advances that may further help in accurate classification of these tumors, which is critical in their management.
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Affiliation(s)
- Soo-Jin Cho
- Department of Pathology, University of California San Francisco, 1825 4th Street Room M2369, Box 4066, San Francisco, CA 94143, USA.
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14
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Abstract
The epithelial cell adhesion molecule (EpCAM) is involved in oncogenesis of hepatoblastomas (HBs). Prior genomic profiling studies showed higher EpCAM expression and worse prognosis in HBs containing primitive histotypes, however, this has not been fully addressed from an immunohistochemical perspective. Our goal is to characterize differential EpCAM immunohistochemistry (EpCAM-IHC) among HBs histotypes. We retrieved 62 HBs from 52 patients. EpCAM-IHC was performed (anti-MOC-31, 1:50 dilution; Cell Marque Corporation, Rocklin, CA) and graded in histotypes using the immunoreactive score. The median age of patients was 2 years (range: 0.4 to 9 y) with a M:F ratio of 1.9. Outcome information was available in 38 patients (alive=30, alive with disease=3, and deceased=5) with median follow-up of 60 months (range: 2 to 171 mo). EpCAM-IHC showed notable overexpression (immunoreactive score >4) in embryonal (89%) and crowded fetal (74%) in contrast to glandular (33%), well-differentiated fetal (32%), and small cell undifferentiated/blastemal (3%) components. Mesenchymal elements were negative. In summary, EpCAM-IHC is helpful to distinguish between epithelial components as it is progressively lost in the transition from embryonal to crowded fetal and into well-differentiated fetal histotypes. Its preferential expression among primitive HBs might have therapeutic and prognostic implications. The significance of its largely negative expression in small cell undifferentiated/blastema is interesting despite its presumed immaturity, deserving further studies.
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15
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Liu H, Bruner ET, Yang J. Cytologic features of malignant rhabdoid tumor of the liver: A case report and literature review. Diagn Cytopathol 2021; 49:E364-E369. [PMID: 34171176 DOI: 10.1002/dc.24815] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/12/2021] [Accepted: 06/09/2021] [Indexed: 11/11/2022]
Abstract
As one of the SMARCB1-deficient tumors, malignant rhabdoid tumor (MRT) of the liver is a rare and aggressive malignancy, typically in young children below the age of 3 years. The diagnosis of MRT of the liver is challenging both clinically and pathologically due to the rarity of the tumor and misdiagnosing it as a hepatoblastoma is not uncommon. Although MRT of the liver and hepatoblastoma share some similar clinical and morphological features, their prognosis and the clinical management are significantly different. Therefore, an accurate diagnosis of MRT or hepatoblastoma is critical for patient care. Here we report a case of an 8-month-old female with MRT of the liver diagnosed by fine needle aspiration and core biopsy. The cytologic and histological features, the results of immunohistochemical studies, and clinical follow-up information are presented. Recent literature regarding the diagnosis and treatment of this tumor were reviewed.
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Affiliation(s)
- Hao Liu
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Evelyn T Bruner
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Jack Yang
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
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16
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Calvisi DF, Solinas A. Hepatoblastoma: current knowledge and promises from preclinical studies. Transl Gastroenterol Hepatol 2020; 5:42. [PMID: 32632393 DOI: 10.21037/tgh.2019.12.03] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 11/12/2019] [Indexed: 12/11/2022] Open
Abstract
The survival rate for patients with metastatic hepatoblastoma (HB) is steadily increased in the last thirty years from 27% to 79%. These achievements result from accurate risk stratification and effective chemotherapy and surgical care. However, patients with poor prognosis require more effective therapies. Recent years have witnessed new insights on the biology of HB, setting the stage for molecular classification and new targets of therapy. We review here the molecular pathology of HB, focusing on the driver genes involved in the process of oncogenesis and the identification of novel targets. We also address the role of in vivo models in elucidating the mechanisms of development of this disease and the pre-clinical phase of new treatment modalities.
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Affiliation(s)
- Diego F Calvisi
- Institute of Pathology, University of Regensburg, Regensburg, Germany
| | - Antonio Solinas
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
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17
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Fazlollahi L, Hsiao SJ, Kochhar M, Mansukhani MM, Yamashiro DJ, Remotti HE. Malignant Rhabdoid Tumor, an Aggressive Tumor Often Misclassified as Small Cell Variant of Hepatoblastoma. Cancers (Basel) 2019; 11:cancers11121992. [PMID: 31835848 PMCID: PMC6966472 DOI: 10.3390/cancers11121992] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 12/09/2019] [Indexed: 11/17/2022] Open
Abstract
The clinical management of pediatric liver tumors involves stratification into risk groups. One previously defined, high-risk group of hepatoblastomas is the small cell undifferentiated variant. In light of molecular studies showing SMARCB1 deletion in these tumors, it is now recognized that most small cell, undifferentiated liver tumors represent an aggressive unrelated tumor—the malignant rhabdoid tumor (MRT). SMARCB1 is a member of the chromatin remodeling SWI/SNF complex and encodes the INI1 protein. The histologic diagnosis of MRT is currently based on INI1 negative immunoreactivity and the presence of rhabdoid morphology. INI1-negative small cell liver tumors lacking classic rhabdoid morphology are often misclassified as small cell undifferentiated hepatoblastomas (SCUD-HB), according to the current classification. Pediatric liver tumors diagnosed between 2003–2017 as SCUD-HB (four cases) or MRT (two cases) were identified from the Columbia University Pathology Department Archives. All tumors were associated with normal or low serum alpha fetoprotein levels, and showed an absence of immunohistochemical staining of hepatocellular markers (Hep-par1, Arginase) and loss of INI1 staining. Two cases were initially diagnosed as MRT, one with prominent rhabdoid morphology, the other with predominant small cell morphology. The remaining four cases with small cell morphology were classified as SCUD-HB. Ancillary molecular studies confirmed the loss of SMARCB1, supporting the diagnosis of MRT in all cases, proving morphology an unreliable criterion. It is critical to eliminate the term INI1-negative hepatoblastoma from the current classification scheme, and classify INI1-negative tumors as MRT, particularly since high-risk HB-chemotherapy regimens are not effective for treating MRT.
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Affiliation(s)
- Ladan Fazlollahi
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York Presbyterian Hospital, New York, NY 10032, USA; (S.J.H.); (M.M.M.); (D.J.Y.); (H.E.R.)
- Correspondence: ; Tel.: +1-212-305-6719
| | - Susan J. Hsiao
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York Presbyterian Hospital, New York, NY 10032, USA; (S.J.H.); (M.M.M.); (D.J.Y.); (H.E.R.)
| | - Manpreet Kochhar
- Department of Pediatrics, Division of Pediatric Hematology, Oncology, Stem Cell Transplantation, Columbia University Irving Medical Center; New York, NY 10032, USA;
| | - Mahesh M. Mansukhani
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York Presbyterian Hospital, New York, NY 10032, USA; (S.J.H.); (M.M.M.); (D.J.Y.); (H.E.R.)
| | - Darrell J. Yamashiro
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York Presbyterian Hospital, New York, NY 10032, USA; (S.J.H.); (M.M.M.); (D.J.Y.); (H.E.R.)
- Department of Pediatrics, Division of Pediatric Hematology, Oncology, Stem Cell Transplantation, Columbia University Irving Medical Center; New York, NY 10032, USA;
| | - Helen E. Remotti
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York Presbyterian Hospital, New York, NY 10032, USA; (S.J.H.); (M.M.M.); (D.J.Y.); (H.E.R.)
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18
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Hepatoblastoma-The Evolution of Biology, Surgery, and Transplantation. CHILDREN-BASEL 2018; 6:children6010001. [PMID: 30577683 PMCID: PMC6352070 DOI: 10.3390/children6010001] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/12/2018] [Accepted: 12/12/2018] [Indexed: 12/24/2022]
Abstract
The most common primary malignant liver tumor of childhood, hepatoblastoma has increased in incidence over the last 30 years, but little is still known about its pathogenesis. Discoveries in molecular biology provide clues but have yet to define targeted therapies. Disease-free survival varies according to stage, but is greater than 90% in favorable risk populations, in part due to improvements in chemotherapeutic regimens, surgical resection, and earlier referral to liver transplant centers. This article aims to highlight the principles of disease that guide current treatment algorithms. Surgical treatment, especially orthotopic liver transplantation, will also be emphasized in the context of the current Children's Oncology Group international study of pediatric liver cancer (AHEP-1531).
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19
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Fazlollahi L, Hsiao SJ, Mansukhani MM, Glade Bender JL, Kung AL, Yamashiro DJ, Remotti HE. INI1 negative hepatoblastoma, a vanishing entity representing malignant rhabdoid tumor. HUMAN PATHOLOGY: CASE REPORTS 2018. [DOI: 10.1016/j.ehpc.2018.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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20
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Abstract
The SMARCB1 gene ( INI1, BAF47) is a member of the SWItch/Sucrose Non-Fermentable (SWI/SNF) chromatin remodeling complex, involved in the epigenetic regulation of gene transcription. SMARCB1 acts as a tumor suppressor gene, and loss of function of both alleles gives rise to SMARCB1-deficient tumors. The prototypical SMARCB1-deficient tumor is the malignant rhabdoid tumor (MRT) which was first described in the kidney but also occurs in soft tissue, viscera, and the brain (where it is referred to as atypical teratoid rhabdoid tumor or AT/RT). These are overwhelmingly tumors of the very young, and most follow an aggressive and ultimately lethal course. Morphologically, most but not all contain a population of "rhabdoid" cells, which are large cells with abundant cytoplasm, perinuclear spherical inclusions, and eccentric vesicular nuclei with large inclusion-like nucleoli. MRT immunohistochemistry reveals complete loss of SMARCB1 nuclear expression, and molecular analysis confirms biallelic SMARCB1 inactivation in the vast majority. Rare AT/RTs have loss of SMARCA4, another SWI/SNF member, rather than SMARCB1. With the widespread adoption of SMARCB1 immunohistochemistry, an increasing number of SMARCB1-deficient tumors outside of the MRT-AT/RT spectrum have been described. In addition to MRT and AT/RT, pediatric tumors with complete loss of SMARCB1 expression include cribriform neuroepithelial tumor, renal medullary carcinoma, and epithelioid sarcoma. Tumors with variable loss of SMARCB1 expression include subsets of epithelioid malignant peripheral nerve sheath tumor, schwannomas arising in schwannomatosis, subsets of chordomas, myoepithelial carcinomas, and sinonasal carcinomas. Variable and reduced expression of SMARCB1 is characteristic of synovial sarcoma. In this review, the historical background, clinical characteristics, morphology, immunohistochemical features, and molecular genetics most germane to these tumors are summarized. In addition, familial occurrence of these tumors (the rhabdoid tumor predisposition syndrome) is discussed. It is hoped that this review may provide practical guidance to pathologists encountering tumors that have altered expression of SMARCB1.
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Affiliation(s)
- Bruce R Pawel
- 1 Division of Anatomic Pathology, Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
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21
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Lee H, El Jabbour T, Ainechi S, Gay LM, Elvin JA, Vergilio JA, Suh J, Ramkissoon SH, Ali SM, Schrock A, Fabrizio D, Frampton G, Nazeer T, Miller VA, Stephens PJ, Ross JS. General paucity of genomic alteration and low tumor mutation burden in refractory and metastatic hepatoblastoma: comprehensive genomic profiling study. Hum Pathol 2017; 70:84-91. [DOI: 10.1016/j.humpath.2017.10.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 09/29/2017] [Accepted: 10/11/2017] [Indexed: 11/30/2022]
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22
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Vokuhl C, de Leon-Escapini L, Leuschner I. Strong Expression and Amplification of IGF1R in Pleuropulmonary Blastomas. Pediatr Dev Pathol 2017; 20:475-481. [PMID: 28382840 DOI: 10.1177/1093526617700945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Pleuropulmonary blastoma (PPB) is a rare malignant intrathoracic tumor primarily affecting children under 5 years of age. PPBs are histologically divided into 3 subtypes: Type 1 PPBs are composed of multiple cysts, and type 3 is a solid lesion with a variable morphologic appearance. Type 2 has a mixed morphology consisting of cystic and solid areas. The genetics of PPB are poorly understood. We analyzed 16 cases of the Kiel Paediatric Tumor Registry with the diagnosis of PPB by comparative genomic hybridization and confirmed some genetic changes by fluorescence in situ hybridization. Furthermore, we performed immunohistochemistry to evaluate insulin-like growth factor type 1 (IGF1R) protein expression. Frequent findings by comparative genomic hybridization were losses on 4q, 5q, 9p and gains on chromosome 8, 17, and 20q. Genomic amplification was observed in 5 cases, 4 related to 15q25qter and 1 to 1p. Fluorescence in situ hybridization could confirm 7 gains of chromosome 8 (7/16, 44%) and 4 amplifications of the IGF1R-gene on 15q26 (4/16, 25%). All of the tumors with IGF1R amplification were type 3 PPBs. One of the PPBs with gain of chromosome 8 was a type 2 tumor and 6 tumors were type 3 PPBs. All but one PPB showed an IGF1R expression by immunohistochemistry. In our series of 16 PPBs, 25% of the tumors have an amplification of the IGF1R gene and 44% show a gain of chromosome 8. All of the tumors with IGF1R amplification were PPBs type 3, indicating that it is a later event in tumor progression, while the gain of chromosome 8 was found in both type 2 and type 3 tumors indicating that these changes are probably earlier events in tumor development. Furthermore, the strong IGF1R protein expression could be a possible therapeutic target in refractory chemoresistant PPBs.
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Affiliation(s)
- Christian Vokuhl
- 1 Department of Pediatric Pathology, Christian-Albrechts-University Kiel, Kiel, Germany
| | | | - Ivo Leuschner
- 1 Department of Pediatric Pathology, Christian-Albrechts-University Kiel, Kiel, Germany
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23
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Wegert J, Vokuhl C, Ziegler B, Ernestus K, Leuschner I, Furtwängler R, Graf N, Gessler M. TP53 alterations in Wilms tumour represent progression events with strong intratumour heterogeneity that are closely linked but not limited to anaplasia. JOURNAL OF PATHOLOGY CLINICAL RESEARCH 2017; 3:234-248. [PMID: 29085664 PMCID: PMC5653929 DOI: 10.1002/cjp2.77] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 06/20/2017] [Accepted: 06/24/2017] [Indexed: 12/20/2022]
Abstract
TP53 mutations have been associated with anaplasia in Wilms tumour, which conveys a high risk for relapse and fatal outcome. Nevertheless, TP53 alterations have been reported in no more than 60% of anaplastic tumours, and recent data have suggested their presence in tumours that do not fulfil the criteria for anaplasia, questioning the clinical utility of TP53 analysis. Therefore, we characterized the TP53 status in 84 fatal cases of Wilms tumour, irrespective of histological subtype. We identified TP53 alterations in at least 90% of fatal cases of anaplastic Wilms tumour, and even more when diffuse anaplasia was present, indicating a very strong if not absolute coupling between anaplasia and deregulation of p53 function. Unfortunately, TP53 mutations do not provide additional predictive value in anaplastic tumours since the same mutation rate was found in a cohort of non-fatal anaplastic tumours. When classified according to tumour stage, patients with stage I diffuse anaplastic tumours still had a high chance of survival (87%), but this rate dropped to 26% for stages II-IV. Thus, volume of anaplasia or possible spread may turn out to be critical parameters. Importantly, among non-anaplastic fatal tumours, 26% had TP53 alterations, indicating that TP53 screening may identify additional cases at risk. Several of these non-anaplastic tumours fulfilled some criteria for anaplasia, for example nuclear unrest, suggesting that such partial phenotypes should be under special scrutiny to enhance detection of high-risk tumours via TP53 screening. A major drawback is that these alterations are secondary changes that occur only later in tumour development, leading to striking intratumour heterogeneity that requires multiple biopsies and analysis guided by histological criteria. In conclusion, we found a very close correlation between histological signs of anaplasia and TP53 alterations. The latter may precede development of anaplasia and thereby provide diagnostic value pointing towards aggressive disease.
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Affiliation(s)
- Jenny Wegert
- Theodor-Boveri-Institute/Biocenter, Developmental BiochemistryWuerzburg UniversityWuerzburgGermany
| | - Christian Vokuhl
- Department of Pathology, Kiel Paediatric Cancer RegistryChristian Albrechts UniversityKielGermany
| | - Barbara Ziegler
- Theodor-Boveri-Institute/Biocenter, Developmental BiochemistryWuerzburg UniversityWuerzburgGermany
| | - Karen Ernestus
- Institute for PathologyWuerzburg UniversityWuerzburgGermany
| | - Ivo Leuschner
- Department of Pathology, Kiel Paediatric Cancer RegistryChristian Albrechts UniversityKielGermany
| | - Rhoikos Furtwängler
- Department of Pediatric Oncology and HematologySaarland University HospitalHomburgGermany
| | - Norbert Graf
- Department of Pediatric Oncology and HematologySaarland University HospitalHomburgGermany
| | - Manfred Gessler
- Theodor-Boveri-Institute/Biocenter, Developmental BiochemistryWuerzburg UniversityWuerzburgGermany.,Comprehensive Cancer Center MainfrankenWuerzburg UniversityWuerzburgGermany
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24
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Cho WC, Balarezo F. Expression of CD34 and β-Catenin in Malignant Rhabdoid Tumor of the Liver Mimicking Proximal-Type Epithelioid Sarcoma. J Pathol Transl Med 2017; 52:195-197. [PMID: 28683521 PMCID: PMC5964282 DOI: 10.4132/jptm.2017.05.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 04/05/2017] [Accepted: 05/15/2017] [Indexed: 11/17/2022] Open
Affiliation(s)
- Woo Cheal Cho
- Department of Pathology and Laboratory Medicine, Hartford Hospital, Hartford, CT, USA
| | - Fabiola Balarezo
- Department of Pathology and Laboratory Medicine, Hartford Hospital, Hartford, CT, USA
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