[A Case of Pulmonary Carcinoid That Has Regressed Spontaneously].

A 65-year-old woman who had diabetes mellitus was referred to the Department of Diabetes Internal Medicine of our hospital in June 201X due to disease progression. Chest radiography revealed an abnormal shadow, and computed tomography( CT)showed a 2 cm nodular shadow in the right S10. Lung cancer was suspected because of increased serum progastrin- releasing peptide(ProGRP)level and smoking history.

[A case of primary unknown cancer difficult to distinguish from lung cancer].

A 26-year-old man was admitted to our hospital with dyspnea, fever, and weight loss. A chest X-ray showed multiple tumor shadows, and a computed tomography (CT) scan showed swelling of the mediastinal and hilar lymph nodes, a mass in the retroperitoneum, and an embolus in the inferior vena cava. A biopsy from the left cervical lymph node revealeda poorly differentiated adenocarcinoma.