Zosteriform metastasis of rectal adenocarcinoma: a case report.

Cutaneous metastases manifesting as zosteriform eruptions are uncommon. To our knowledge, we report the second case of zosteriform cutaneous metastasis arising from a rectal carcinoma in a 58-year-old man who presented with a painless popular eruption in the T12 dermatomal distribution nine months after his primary diagnosis of rectal carcinoma was made. Furthermore, we discuss a review of the literature regarding zosteriform cutaneous metastases and the possible pathogenesis of these lesions.