Gastrointestinal stromal tumor of rectum diagnosed by three-dimensional anorectal ultrasound Study linked to the Department of General Surgery, Hospital São Lucas, Faculdade Assis Gurgacz (FAG), Cascavel, PR, Brazil.

Tumor estromal gastrointestinal de reto diagnosticado por ultra-sonografia anorretal tridimensional

Raphael Ferreira Ratin Suelen Melão Doryane Maria dos Reis Lima Univaldo Etsuo Sagae Gustavo Kurachi About the authors

ABSTRACT

Gastrointestinal stromal tumors (GIST) are relatively rare lesions of mesenchymal origin, being more frequent in the stomach and small intestine. These are clinically asymptomatic lesions, and in advanced stages may present with nausea, vomiting, bleeding, abdominal pain, a palpable mass, and even intestinal obstruction. The only effective treatment consists of a complete tumor resection. We report two cases of GIST located in the distal rectum and evaluated with three-dimensional anorectal ultrasonography, a procedure of great value in identifying the size of the lesion, its involvement toward nearby structures and lymph node invasion.

Keywords:
Gastrointestinal stromal tumor; CD 34; CD 117

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