集簇した紅色丘疹を呈した前立腺癌の皮膚転移

・まれな前立腺癌の皮膚転移を経験した．

・鑑別に帯状疱疹を考える臨床像であった．

・一見して帯状疱疹のようにみえる病変が，硬い丘疹や結節で形成されている場合には，皮膚転移の可能性を考えて積極的に生検することが重要と考えた．

（「症例のポイント」より）

　

A case of cutaneous metastasis from prostate cancer presenting with multiple red papules, zosteriform metastasis

　

Shibuya, Mami1）Inoue, Nana1）Okamoto, Natsuko1）Toichi, Eiko1） 1）Department of Dermatology, Kyoto Medical Center

　

Prostate cancer is a common malignant neoplasm in man but skin metastasis of prostate cancer is rare and the zosteriform pattern of metastasis is also rare. A 78 years-old male patient, who was under treatment of prostatic cancer, referred to us with a complaint of multiple red papules in the left chest region without pain, which looked like herpes zoster at a glance. A skin biopsy was performed and the histopathological findings revealed that it was carcinoma with positive PSA staining. A palpation and a skin biopsy is necessary to diagnose the zosteriform pattern of metastasis.