Abstract
We report the rare case of a patient with ascending colon cancer who presented with Bazex syndrome. A 70-year-old man consulted our hospital for the treatment of keratotic exanthem of both legs. The exanthem was becoming worse and spreading to his entire body despite treatment with topical steroid ointments. Histopathological examination of skin biopsy specimens obtained from the lesions revealed interface dermatitis. Therefore, the dermatologist strongly suspected that the skin changes were associated with some underlying malignant tumor. Finally, after further examinations, the patient was diagnosed as having ascending colon cancer and referred to our department. We performed laparoscopic-assisted right colectomy for the ascending colon cancer. Since the exanthem improved dramatically, the patient was finally diagnosed as having Bazex syndrome. As Bazex syndrome associated with ascending colon cancer is extremely rare, we report this case with a review of the literature.