Atypical localization of colorectal cancer metastasis one case and literature review

INTRODUCTION: colorectal cancer is a public health challenge in France. Cutaneous metastases are rare but they give evidence of poor prognosis. PRESENTATION OF CASE: 88 years old female patient, with a previous history of hysterectomy, venous thrombosis outcomes of ankle fracture and stable multiple sclerosis without treatment. She came to emergency with peritonitis. CT scan showed a pneumoperitoneum, and a transverse colonic mass. A laparotomy was performed. This revealed a perforation of caecum, and an obstructive tumor of transverse colon. An extended right semi-colectomy was performed to remove both the perforate caecum and the tumor. The patient was discharged on the 7th post-operative day. Examination confirm an adenocarcinoma pT3N0Mx. At follow up, a nodule was found on her forehead. The biopsy showed a metastasis of colon adenocarcinoma. A surgical resection was performed. To date the patient is well with no evidence of recurrent disease. CONCLUSION: Cutaneous metastases are rare and there are no recommendations for their treatment. Surgical resection is the best choice, but radiotherapy may be an alternative.