Pulmonary carcinoid presenting as multiple subcutaneous nodules.

A 60-year-old female presented with a one-year history of multiple enlarging tender subcutaneous nodules. Initial biopsy demonstrated a poorly differentiated adenocarcinoma. Mammography showed multiple nodular breast lesions. After the patient failed to respond to tamoxifen, a second biopsy demonstrated a metastatic carcinoid tumor. Further search revealed a single small pulmonary nodule, which on aspiration biopsy proved to be a carcinoid tumor. The patient failed to respond to treatment with streptozotocin and 5'-fluorouracil. Therapy with leucovorin calcium and 5'-fluorouracil then produced a partial response.