Article

A case of mucoid carcinoma of the sigmoid colon with features of a submucosal tumor.

Department of Gastrointestinal Surgery and Surgical Oncology, Ehime University School of Medicine.
Nippon Shokakibyo Gakkai zasshi The Japanese journal of gastro-enterology 01/2011; 108(1):88-94. pp.88-94
Source: PubMed

ABSTRACT An 82-year-old man visited a medical clinic for dyschezia. His serum carcinoembryonic antigen (CEA) level was 16ng/ml. Abdominal computed tomography (CT) revealed an 8×7cm tumor in the sigmoid colon. Endoscopy showed that the sigmoid colon was insufficiently dilated but no mucosal lesions were present. Histological examination of biopsy specimens did not show malignant cells. Sigmoidectomy was performed due to suspected submucosal tumor. The final pathological diagnosis was mucoid carcinoma with features of a submucosal tumor which had no mucosal lesions. Mucoid carcinoma with features of a submucosal tumor in the colorectum is rare. Most cases are associated with ulcer lesions or scar lesions on the mucosal surface of tumor because it arises from epithelial cells.

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Keywords

82-year-old man
 
Abdominal computed tomography
 
biopsy specimens
 
cases
 
CEA
 
colorectum
 
CT
 
final pathological diagnosis
 
medical clinic
 
mucosal lesions
 
mucosal surface
 
serum carcinoembryonic antigen
 
Sigmoidectomy
 
submucosal tumor
 
ulcer lesions
 

Koichi Sato