[Left supraclavicular adenopathy with a neuroendocrine pattern of unknown cause: prostatic carcinoma metastasis].

Contribution of a case report of a male patient presenting with single left supraclavicular adenopathy of initially unknown origin and histologic pattern of neuroendocrine nature, finally traced to the prostate. It is believed that in any male over 45 diagnosed with carcinoma of unknown origin in the supradiaphragm lymph nodes, prostate carcinoma metastasis should also be ruled out using PSA immunostaining and by measuring serum PSA, serum alkaline phosphatase and DRE.