Complete Regression of Endobronchial Carcinoid Tumor after an Endoscopic Biopsy.

An 80-year-old woman who had been diagnosed with an endobronchial carcinoid tumor visited our hospital for treatment with an endoscopic technique. However, a bronchoscopic examination at our hospital showed spontaneous regression of the tumor at the orifice of the right middle lobar bronchus. Chest computed tomography five months later revealed no local recurrence.

Huge retroperitoneal dedifferentiated liposarcoma presented as acute pancreatitis: report of a case.

A 74-year-old male with abdominal pain was admitted to the emergency room in our hospital. The high value of serum amylase was shown in his blood test. The postcontrast computed tomography (CT) showed the huge retroperitoneal tumor with a thin-walled mass occupying most of the part of the right retroperitoneal space.

Solitary atypical adenomatous hyperplasia in the lung of a 17-year-old man with spontaneous pneumothorax.

We report here a case of solitary atypical adenomatous hyperplasia (AAH). A 17-year-old non-smoker man developed spontaneous pneumothorax, and computed tomogram scanning of his chest revealed a ground-glass opacity measuring 5 x 5 mm in the right lung with no change in its size for the next 7 months. To exclude the possibility of pulmonary neoplasia, he underwent partial pulmonary resection.

Mediastinal epithelioid hemangioendothelioma resected by hemi-plastron window technique.

We report a case of epithelioid hemangioendothelioma arising from the left brachiocephalic vein in the anterior superior mediastinum of a 41-year-old man. The tumor was resected by local excision using a novel approach, the "hemi-plastron window" technique. The patient had an uneventful postoperative course and no recurrence of tumor 28 months after surgical treatment.