[Marginal zone lymphoma of mucosa-associated lymphoid tissue of the parietal pleura; report of a case].

An 76-year-old man was referred to our hospital due to right hydrothorax. The diffuse thickening of parietal pleura with increased fluoro-2-deoxy-D-glucose (FDG) uptake was noted by computed tomography (CT) and positron emission tomography (PET). Surgical biopsy was performed and the tumor was diagnosed as mucosal associated lymphoid tissue (MALT) lymphomas of parietal pleura origin by pathology. Complete remission was achieved by postoperative chemotherapy (R-CHOP), and the patient is now alive without recurrence.

[Lymphoepithelioma-like carcinoma（ LELC） of the lung].

A 77-year-old woman was admitted to our hospital with abnormal chest shadow detected on a medical checkup. Chest computed tomography(CT)showed a well-defined tumor in the upper lobe of the right lung. On positron emission tomography by fluorodeoxyglucose(FDG),the tumor revealed to be positive. We performed right upper lobectomy with hilar and mediastinal lymph node dissection. The histopathological diagnosis was lymphoepithelioma-like carcinoma (LELC). In the past 25-years, 41 cases have been reported in Japan. The average age is 64 years old, including 25 male cases and 16 female cases. Among these cases, more than half were in the early resectable stage.

[Sarcoidosis with right middle lobe atelectasis initially suspected of malignant lymphoma; report of a case].

60-year-old woman was admitted with an abnormal shadow on the chest roentgenogram. Computed tomography showed atelectasis of the right middle lobe and hilar and mediastinal lymphadenopathy. Bronchoscopic examination revealed an obstruction at the orifice of the right middle lobe bronchus and biopsy was performed. The biopsy suggested malignant lymphoma. A diagnosis of methotrexate-associated lymphoproliferative disorders was suspected because the patient was administered methotrexate to treat the rheumatoid arthritis. The video-assisted thoracoscopic surgery was performed. Histological examination showed no malignancy and sarcoidosis in the peribronchial lymph nodes. The compressed middle lobe bronchus by enlarged lymph nodes was consider to be the cause of the middle lobe atelectasis.

[Adult Bochdalek hernia combined with pneumothorax].

A 71-year-old man, who had been given a diagnosis of Bochdalek hernia in infancy, was referred to our hospital for dyspnea The chest X-ray and computed tomography (CT) showed left pneumothorax with bullas and intestines in his left thoracic cavity. He was admitted to our hospital and a chest tube was inserted into the left pleural cavity. The left lung expanded immediately and air leakage was stopped. He became asymptomatic and he was discharged from the hospital on the 8th day. Most Bochdalek hernias are observed in infancy, and adult cases combined with pneumothorax and bullas are very rare.

[Human pulmonary dirofilariasis].

The patient was a 60's-year-old man, who was incidentally pointed out a coin lesion in the right lung by chest radiogram. Chest computed tomography showed a round-shaped, well defined nodule of 2.5 cm in size in the right S1. Positron emission tomography did not show the accumulation of fluorodeoxyglucose in the nodule. We considered the tumor to be benign, but the patient chose surgical treatment. Partial resection of the lung was performed by thoracoscopic surgery. Histopathological diagnosis was human pulmonary dirofilariasis.

[Catamenial pneumothorax; report of a case].

A 40-year-old female had right-sided pneumothorax. She was treated with a chest tube. On the 2nd day, her menstruation started. Because of a persistent air leak, she underwent a thoracoscopic operation on the 15th day. During the operation, we noted a pulmonary bulla at the apex and multiple blue berry spots both on the visceral pleura and the tendinous part of the diaphragm. We performed a resection of the pulmonary bulla, partial diaphragmatic excision plus suture. Section of visceral pleura and diaphragm shows ductal structures, which is insistent with endometriosis. The serum CA125 level decreased to 39 U/ml. Following surgery, oral contraceptives was started and no recurrence was encountered thereafter.

Synthesis of a glandular secretion of the civet cat, (2S,6S)-(6-methyltetrahydropyran-2-yl)acetic acid and its enantiomer, by using the yeast-reduction product and recovered substrate from yeast reduction.

A glandular secretion of the civet cat, (2S,6S)-(6-methyltetrahydropyran-2-yl)acetic acid 1 and its enantiomer, were synthesized from the yeast-reduction product and recovered substrate from yeast reduction.

Syntheses of (+)- and (-)-dihydropinidine and (+)- and (-)-epidihydropinidine by using yeast reduction of methyl (2-oxocyclohexyl)acetate.

(+) and (-)-Dihydropinidine and (+)- and (-)-epidihydropinidine were synthesized from hydroxy esters 1 and 2 which had been prepared by yeast reduction of methyl (2-oxocyclohexyl)acetate. The enantiomeric excess at the C-1 positions of 1 and 2 were both determined as more than 99% ee.