Supraclavicular lymph node as the first presentation and late skin metastasis: an unusual clinical course for prostate cancer.

Prostate cancer is the most common non-cutaneous malignancy and the second cause of cancer death in men. Despite improvements in diagnostic methods, the primary diagnosis of a number of patients may still be on metastatic stage. Cutaneous and supraclavicular lymph nodes are very rare metastatic sites for prostate cancer. In this report we present an extremely rare prostate cancer case diagnosed with supraclavicular lymph node and then developed cutaneous metastasis. A 64 year-old man was admitted to an internal medicine outpatient clinic with supraclavicular lymph node and biopsy of lymph node showed an adenocarcinoma. After prostate cancer diagnosis, patient was treated with androgen deprivation therapy, docetaxel chemotherapy and abiraterone acetate, respectively. While abiraterone treatment, cutaneous metastasis developed in inguinal area and diagnosis was confirmed by skin biopsy. In some cases, atypical symptoms may guide us to find disease with aggressive clinics. That's why, physical rectal examination and prostate specific antigen measurements should be kept in mind for prostate cancer in male patients with supraclavicular lymph node or atypical metastasis.