BENIGN MASQUERADE – A RARE CASE OF COLONIC MALIGNANCY LURKING BEHIND AMEBIC COLITIS
A 45 year old female patient presented with intestinal obstruction due to rectal stricture and associated radiologic findings and histopathology indicative of invasive amebiasis. Suspicion of neoplasia arose due to incomplete response to antiamebic therapy which could only be proved after repeated biopsies. Amebic colitis has been reported to masquerade as colorectal malignancy. In contrast, we herein present a case of rectal malignancy presenting primarily as amebic colitis, creating considerable difficulty in diagnosis and management. This ‘benign masquerade’ in which a malignant disease mimics or is masked by a benign pathology is particularly problematic since it lets the malignant pathology progress. A failure of complete resolution of amebic lesions with antiamebic therapy should be considered a red flag and possibility of a more sinister coexisting pathology must be excluded in such cases. The patient had generalized invasive colonic amebiasis which is extremely rare. The unique radiologic appearance of generalized invasive colonic amebiasis is illustrated.
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