[Two cases of microscopic polyangitis with preceding interstitial pneumonia diagnosed by surgical lung biopsy].

We encountered 2 cases of microscopic polyangitis (MPA) with preceding interstitial pneumonia. The patients were elderly men, and radiological findings showed a UIP pattern in both cases. Furthermore, ANCA-associated vasculitis had been suspected since the first admission in case 1, because MPO-ANCA tests were positive, and the surgical lung biopsy revealed vasculitis in a honeycomb lesion.

Disseminated cryptococcosis complicated with bilateral pleural effusion and ascites during corticosteroid therapy for organizing pneumonia with myelodysplastic syndrome.

An 83-year-old man with myelodysplastic syndrome was admitted to our hospital due to dyspnea and abnormal shadows on chest X-ray films during corticosteroid therapy for organizing pneumonia. He was diagnosed as having disseminated cryptococcosis with pulmonary lesions after detecting Cryptococcus neoformans. Both bilateral pleural effusion with or without ipsilateral pulmonary lesions and ascites ensued, and it was assumed that both direct involvement and serositis were associated with the fluid accumulation.

[Case of acute bird fancier's lung caused by a yellow-shouldered Amazon bird associated with lung cancer].

A 69-year-old man was admitted to our hospital complaining of generalized weakness and cough for one month. Chest computed tomography (CT) demonstrated bilateral ground-glass opacities and a nodule in right S6 about 11mm in diameter with multiple mediastinal lymph node swellings. After admission the patient's symptoms improved without therapy and examination of the bronchoalveolar lavage fluid (BALF) and transbronchial lung biopsy (TBLB) revealed findings compatible with acute hypersensitivity pneumonitis.

[A case of angioimmunoblastic T-cell lymphoma with interstitial shadow which disappeared after injection of hydrocortisone].

A case of angioimmunoblastic T-cell lymphoma (AITL) was reported. A 56-year-old woman was admitted because of high fever and systemic lymphademopathy. Her chest X-ray on admission showed mediastinal and bilateral hilar lymphademopathy (BHL) and interstitial shadows in both lower lung fields.