Primary extragastrointestinal stromal tumor of the sigmoid mesocolon with metastatic spread to greater omentum: case report.
A 71-year-old female complained of abdominal pain, weight loss and abdominal distension. Gynecologic examination revealed a hardly movable, palpable mass in the lower abdomen, reaching the umbilicus. An abdominal ultrasound and computed tomography (CT) scan suggested a large abdominal mass with the possible origin in the left ovary and without significant lymph node enlargements. The patient subsequently underwent complete evacuation of tumor tissue, omentectomy and total abdominal hysterectomy and bilateral salpingo-ovariectomy. Immunohistochemical examination revealed strongly positive staining of tumor cells for CD117. The final pathologic diagnosis was a primary extragastrointestinal stromal tumor (EGIST) of the sigmoid mesocolon with omental metastasis. The differential diagnosis of the tumor presented in the lower abdomen should consider the EGIST as well.
University of Zagreb, "Sestre milosrdnice" University Hospital Center, University Hospital for Tumors, Department of Gynecologic Oncology, Zagreb, Croatia.
Mario
M
Puljiz
Ilija
I
Alvir
Damir
D
Danolić
Darko
D
Tomica
Ivica
I
Mamić
Zeljko
Z
Puljiz
Robert
R
Zorica
Melita Perić
MP
Balja
D000368:Aged; D012809:Colon, Sigmoid / Q000473:pathology*; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D046152:Gastrointestinal Stromal Tumors / Q000000981:diagnostic imaging / Q000556:secondary* / Q000601:surgery; D006801:Humans; D009852:Omentum / Q000473:pathology*; D011859:Radiography; D012811:Sigmoid Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery