Extensive Metastatic Sarcomatoid Renal Cell Carcinoma Evaluated by 18F-FDG PET/CT: a Case Report and Review of Literature

Sarcomatoid renal cell carcinoma (sRCC) is a highly aggressive form of dedifferentiated renal cell carcinoma. We report a 62-yearold man who presented with respiratory symptoms and a lung mass on chest computed tomography (CT). The patient underwent positron emission tomography/computed tomography (...

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Main Authors: Dominique Fuser, Matthew L. Hedberg, Louis P. Dehner, Farrokh Dehdashti, Barry A. Siegel
Format: Article
Language:English
Published: Codon Publications 2018-01-01
Series:Journal of Kidney Cancer and VHL
Subjects:
Online Access:https://jkcvhl.com/index.php/jkcvhl/article/view/99
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author Dominique Fuser
Matthew L. Hedberg
Louis P. Dehner
Farrokh Dehdashti
Barry A. Siegel
author_facet Dominique Fuser
Matthew L. Hedberg
Louis P. Dehner
Farrokh Dehdashti
Barry A. Siegel
author_sort Dominique Fuser
collection DOAJ
description Sarcomatoid renal cell carcinoma (sRCC) is a highly aggressive form of dedifferentiated renal cell carcinoma. We report a 62-yearold man who presented with respiratory symptoms and a lung mass on chest computed tomography (CT). The patient underwent positron emission tomography/computed tomography (PET/CT) with 18F-fluorodeoxyglucose (18F-FDG) and was found to have extensive metastatic disease. Based on the history and imaging findings, there were possible primary malignancies, including bronchogenic carcinoma, melanoma, or an aggressive lymphoma. An excisional biopsy surprisingly revealed a high-grade sarcomatoid carcinoma with no evidence of differentiation, and immunohistochemical (IHC) studies showed that the tumor cells were positive for markers of genitourinary origin (PAX-8 and vimentin). The histologic and IHC results, along with multiple FDG-avid exophytic lesions in both kidneys, were considered diagnostic of sRCC. Here we have highlighted the potential role of 18F-FDG-PET-CT in patients with sRCC, discussed the diagnostic challenges, and presented a brief review.
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spelling doaj.art-b1fc2afc9924449e932c62d75d2166bc2022-12-21T18:10:35ZengCodon PublicationsJournal of Kidney Cancer and VHL2203-58262018-01-015110.15586/jkcvhl.2018.99Extensive Metastatic Sarcomatoid Renal Cell Carcinoma Evaluated by 18F-FDG PET/CT: a Case Report and Review of LiteratureDominique FuserMatthew L. HedbergLouis P. DehnerFarrokh DehdashtiBarry A. SiegelSarcomatoid renal cell carcinoma (sRCC) is a highly aggressive form of dedifferentiated renal cell carcinoma. We report a 62-yearold man who presented with respiratory symptoms and a lung mass on chest computed tomography (CT). The patient underwent positron emission tomography/computed tomography (PET/CT) with 18F-fluorodeoxyglucose (18F-FDG) and was found to have extensive metastatic disease. Based on the history and imaging findings, there were possible primary malignancies, including bronchogenic carcinoma, melanoma, or an aggressive lymphoma. An excisional biopsy surprisingly revealed a high-grade sarcomatoid carcinoma with no evidence of differentiation, and immunohistochemical (IHC) studies showed that the tumor cells were positive for markers of genitourinary origin (PAX-8 and vimentin). The histologic and IHC results, along with multiple FDG-avid exophytic lesions in both kidneys, were considered diagnostic of sRCC. Here we have highlighted the potential role of 18F-FDG-PET-CT in patients with sRCC, discussed the diagnostic challenges, and presented a brief review.https://jkcvhl.com/index.php/jkcvhl/article/view/99FDG PET/CTmetastasisPET/CTrenal cell carcinomasarcomatoid
spellingShingle Dominique Fuser
Matthew L. Hedberg
Louis P. Dehner
Farrokh Dehdashti
Barry A. Siegel
Extensive Metastatic Sarcomatoid Renal Cell Carcinoma Evaluated by 18F-FDG PET/CT: a Case Report and Review of Literature
Journal of Kidney Cancer and VHL
FDG PET/CT
metastasis
PET/CT
renal cell carcinoma
sarcomatoid
title Extensive Metastatic Sarcomatoid Renal Cell Carcinoma Evaluated by 18F-FDG PET/CT: a Case Report and Review of Literature
title_full Extensive Metastatic Sarcomatoid Renal Cell Carcinoma Evaluated by 18F-FDG PET/CT: a Case Report and Review of Literature
title_fullStr Extensive Metastatic Sarcomatoid Renal Cell Carcinoma Evaluated by 18F-FDG PET/CT: a Case Report and Review of Literature
title_full_unstemmed Extensive Metastatic Sarcomatoid Renal Cell Carcinoma Evaluated by 18F-FDG PET/CT: a Case Report and Review of Literature
title_short Extensive Metastatic Sarcomatoid Renal Cell Carcinoma Evaluated by 18F-FDG PET/CT: a Case Report and Review of Literature
title_sort extensive metastatic sarcomatoid renal cell carcinoma evaluated by 18f fdg pet ct a case report and review of literature
topic FDG PET/CT
metastasis
PET/CT
renal cell carcinoma
sarcomatoid
url https://jkcvhl.com/index.php/jkcvhl/article/view/99
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