Synchronous colorectal adenocarcinoma and gastrointestinal stromal tumor in Meckel's diverticulum; an unusual association.
BACKGROUND
Coexistence of gastrointestinal stromal tumor with synchronous or metachronous colorectal cancer represents a phenomenon with increasing number of relative reports in the last 5 years. Synchronous occurence of GISTs with other gastrointestinal tumors of different histogenesis presents a special interest. We herein report a case of GIST in Meckel's diverticulum synchronous with colorectal adenocarcinoma.


METHODS
A 69 year old man, presented with abdominal distension and anal bleeding on defecation. Colonoscopy revealed colorectal cancer and a low anterior resection was performed, during which a tumor in Meckel's diverticulum was discovered. Histologic examination revealed GIST in Meckel's diverticulum and a rectosigmoid adenocarcinoma.


CONCLUSIONS
Whenever GIST is encountered, the surgeon should be alert to recognize a possible coexistent tumor with different histological origin. Correct diagnosis of synchronous tumors of different origin is the cornerstone of treatment.
Kosmidis
Christopher
C
Department of Surgery, Interbalkan European Medical Center, Thessaloniki, Greece. dr.ckosmidis@gmail.com
Efthimiadis
Christopher
C
Levva
Sofia
S
Anthimidis
George
G
Baka
Sofia
S
Grigoriou
Marios
M
Tzeveleki
Ioanna
I
Masmanidou
Maria
M
Zaramboukas
Thomas
T
Basdanis
Georgios
G
D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D000368:Aged; D015179:Colorectal Neoplasms / Q000473:pathology* / Q000601:surgery; D046152:Gastrointestinal Stromal Tumors / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008467:Meckel Diverticulum / Q000473:pathology*; D009378:Neoplasms, Multiple Primary / Q000473:pathology* / Q000601:surgery