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Trichoblastic carcinoma arising from colostomy
Daisuke Hashimoto1, Hideyuki Kuroki, Yutaka Motomura
1Department of Surgery, Kumamoto Regional Medical Center, Japan.
American Journal of Surgery
|August 16, 2011
Summary
A rare skin cancer, trichoblastic carcinoma, was found on a patient's colon stoma. This unusual presentation highlights the importance of thorough pathological examination for accurate diagnosis.
Area of Science:
- Dermatology
- Oncology
- Pathology
Background:
- Trichoblastic carcinoma is a rare skin malignancy originating from hair germ cells.
- Malignancies typically present on the skin, not internal surgical sites.
Observation:
- An 84-year-old male presented with a stomal tumor initially diagnosed as colon cancer.
- The tumor was located on the stoma of the descending colon.
Findings:
- Postoperative pathological examination revealed the stomal tumor to be trichoblastic carcinoma.
- This represents a highly unusual site for this type of skin cancer.
Implications:
- This case underscores the potential for rare skin cancers to manifest in unexpected locations.
- Accurate pathological diagnosis is crucial, especially in complex surgical cases.
- Further investigation may be warranted to understand the pathogenesis of extrermal trichoblastic carcinoma.

