Abstract

SOTO, Mailyn et al. Gastrointestinal stromal tumor of the esophagus: A case report. Gen [online]. 2013, vol.67, n.1, pp.39-41. ISSN 0016-3503.

Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal (GI) tract; however they only represent a minor percentage of all GI neoplasms. GISTs usually occur in older individuals and are most common in the stomach (70%),1 followed by small intestine (20-30%), colon and rectum (5%), and less frequently in the esophagus, omentum, and mesentery (<5%). Histologically GISTs vary from spindle cell tumors to epithelioid and pleomorphic tumors. In contrast to other esophageal mesenchymal tumors, GISTs are immunoreactive for KIT protein (CD 117) in more than 95% of the cases and is frequently co-expressed with CD34 (60-70%).¹ We report a case of a female aged 74, who presented with a history of dysphagia and retrosternal pain since 2007. An initial upper GI endoscopy showed a submucosal lesion in the distal third of the esophagus and a subsequent Endoscopic Ultrasound (EUS) revealed a hypoechoic lesion located in the medium and distal esophagus arising from the muscularis propria (fourth echoic layer) suggestive of a stromal tumor. A proceeds to take a needle biopsy EchoTip No: 22 cytology reported: benign mesenchymal tumor. Due to worsening of the esophageal symptoms and the ambiguous results the patient was transferred to surgery in 2009. The pathology confirmed the presence of a stromal tumor with neurogenic differentiation.

Keywords : Endoscopic Ultrasound; Gastrointestinal stromal tumors; Fine Needle Aspiration.

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