Gastrointestinal Neuroectodermal Tumor/Extraskeletal Ewing Sarcoma of the Ileum with Ulcerative Colitis

Introduction: Malignant gastrointestinal neuroectodermal tumor (GNET), previously known as clear cell sarcoma-like tumor of the gastrointestinal tract, is an extremely rare and aggressive mesenchymal neoplasm characterized by high rates of recurrence, metastases, and mortality. Currently,...

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Main Authors: Tianyu She, Stephanie Ren, Seymour Katz
Format: Article
Language:English
Published: Karger Publishers 2024-12-01
Series:Case Reports in Gastroenterology
Online Access:https://karger.com/article/doi/10.1159/000542659
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author Tianyu She
Stephanie Ren
Seymour Katz
author_facet Tianyu She
Stephanie Ren
Seymour Katz
author_sort Tianyu She
collection DOAJ
description Introduction: Malignant gastrointestinal neuroectodermal tumor (GNET), previously known as clear cell sarcoma-like tumor of the gastrointestinal tract, is an extremely rare and aggressive mesenchymal neoplasm characterized by high rates of recurrence, metastases, and mortality. Currently, there are no standardized guidelines for therapy. Case Presentation: We present a case of GNET in a 32-year-old male with a history of lymphoma and ulcerative colitis (UC), who also had synchronous multiple liver metastasis. To our knowledge, this is the first documented case of GNET in a patient with inflammatory bowel disease. Conclusion: The narrow time frame in which UC and GNET were diagnosed warrants further investigation into their potential relationship.
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series Case Reports in Gastroenterology
spelling doaj-art-d0bf18055da546ada5db346de38e4dcc2025-08-20T03:09:47ZengKarger PublishersCase Reports in Gastroenterology1662-06312024-12-0118144945310.1159/000542659Gastrointestinal Neuroectodermal Tumor/Extraskeletal Ewing Sarcoma of the Ileum with Ulcerative ColitisTianyu SheStephanie RenSeymour Katz Introduction: Malignant gastrointestinal neuroectodermal tumor (GNET), previously known as clear cell sarcoma-like tumor of the gastrointestinal tract, is an extremely rare and aggressive mesenchymal neoplasm characterized by high rates of recurrence, metastases, and mortality. Currently, there are no standardized guidelines for therapy. Case Presentation: We present a case of GNET in a 32-year-old male with a history of lymphoma and ulcerative colitis (UC), who also had synchronous multiple liver metastasis. To our knowledge, this is the first documented case of GNET in a patient with inflammatory bowel disease. Conclusion: The narrow time frame in which UC and GNET were diagnosed warrants further investigation into their potential relationship. https://karger.com/article/doi/10.1159/000542659
spellingShingle Tianyu She
Stephanie Ren
Seymour Katz
Gastrointestinal Neuroectodermal Tumor/Extraskeletal Ewing Sarcoma of the Ileum with Ulcerative Colitis
Case Reports in Gastroenterology
title Gastrointestinal Neuroectodermal Tumor/Extraskeletal Ewing Sarcoma of the Ileum with Ulcerative Colitis
title_full Gastrointestinal Neuroectodermal Tumor/Extraskeletal Ewing Sarcoma of the Ileum with Ulcerative Colitis
title_fullStr Gastrointestinal Neuroectodermal Tumor/Extraskeletal Ewing Sarcoma of the Ileum with Ulcerative Colitis
title_full_unstemmed Gastrointestinal Neuroectodermal Tumor/Extraskeletal Ewing Sarcoma of the Ileum with Ulcerative Colitis
title_short Gastrointestinal Neuroectodermal Tumor/Extraskeletal Ewing Sarcoma of the Ileum with Ulcerative Colitis
title_sort gastrointestinal neuroectodermal tumor extraskeletal ewing sarcoma of the ileum with ulcerative colitis
url https://karger.com/article/doi/10.1159/000542659
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AT stephanieren gastrointestinalneuroectodermaltumorextraskeletalewingsarcomaoftheileumwithulcerativecolitis
AT seymourkatz gastrointestinalneuroectodermaltumorextraskeletalewingsarcomaoftheileumwithulcerativecolitis