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CC BY-NC-ND 4.0 · Indian J Med Paediatr Oncol 2019; 40(S 01): S173-S175
DOI: 10.4103/ijmpo.ijmpo_148_17
Case Report

Pseudoprogression in Rectal Gastrointestinal Stromal Tumor

Virendra Meena
Departments of Diagnostic and Interventional Radiology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
,
Binit Sureka
Departments of Diagnostic and Interventional Radiology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
,
Poonam Elhence
Departments of Pathology and Lab Medicine, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
,
Mayuresh Gautam
Departments of Diagnostic and Interventional Radiology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
,
Pawan Garg
Departments of Diagnostic and Interventional Radiology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
,
Pushpinder Singh Khera
Departments of Diagnostic and Interventional Radiology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
› Author Affiliations Financial support and sponsorship Nil.
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Abstract

Although gastrointestinal stromal tumors (GISTs) are common mesenchymal intestinal neoplasms, rectal GISTs are rare mesenchymal tumors of the GI tract. We describe a case of rectal GIST in a 63-year-old male. The patient was given imatinib monotherapy and was further followed up by contrast-enhanced computed tomography abdomen for response assessment. We conclude that although rectal GISTs are extremely uncommon, it should be considered as a differential when any rectal mass is incidentally detected. Oncologists and radiologists should also be aware of pseudoprogression phenomena of GISTs in evaluating tumor response.

Keywords

Choi criteria - gastrointestinal stromal tumor - rectal - response evaluation


Publication History

Article published online:
24 May 2021

© 2019. Indian Society of Medical and Paediatric Oncology. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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