FDG Uptake in Cutaneous and Subcutaneous Metastases From Colorectal Adenocarcinoma

Cutaneous metastases from colorectal adenocarcinoma are rare, and it implies a poor prognosis. Early detection and recognition of the metastatic disease to the skin can dramatically alter the treatment and the prognosis of the disease. We described an unusual case of colorectal cancer with cutaneous metastases. In this case, FDG PET/CT revealed the abnormal focal uptake in a subcutaneous lump on the right abdominal wall 14 months after right hemicolectomy, and it was the sole site of abnormal FDG uptake. Wide excision of abdominal skin was performed. Histopathologic findings were metastatic adenocarcinoma from the colon.