Abstract

We describe two cases of metastatic skin cancer originating from pneumonic adenocarcinoma. In both cases, skin metastases were discovered prior to the detection of the primary tumor.
Case 1: An 83-year-old man developed a reddish nodule on his back. A pathological study revealed solid proliferation of adenocarcinoma cells in the subcutaneous fat tissue. Examination of the entire body revealed pneumonic adenocarcinoma. Metastases to the liver, adrenal gland and mediastinal lymph nodes were detected, and the patient died 2 months after the first visit.
Case 2: A 64-year-old man developed two reddish nodules on his scalp. A pathological study revealed solid proliferation of adenocarcinoma cells in the dermis and subcutaneus fat tissue. A whole-body examination revealed pneumonic adenocarcinoma. Metastases to the bones (acromion, rib, ilium) were detected, and the patient died 5 months after the first visit.