Invasive mucinous adenocarcinoma of the lung presenting as a large, thin-walled cyst: A case report and literature review.

Invasive mucinous adenocarcinoma (IMA), formerly referred to as mucinous bronchioloalveolar carcinoma, is a rare variant form of invasive adenocarcinoma and is radiologically characterized by dense pneumonic consolidation, ground-glass opacity and nodules. By contrast, large, thin-walled cysts are rare. We herein report the case of a 75-year-old man with IMA presenting as a large, irregularly shaped cystic lesion.

Hemoperitoneum Secondary to Rupture of a Hepatic Metastasis from Small Cell Lung Cancer during Chemotherapy: A Case with a Literature Review.

A 65-year-old man was diagnosed with small cell lung cancer with multiple liver metastases. Three days after initiating chemotherapy, he experienced abdominal discomfort with hypotension. Computed tomography revealed a ruptured liver metastasis and the presence of hemorrhagic ascites.

Pulmonary Mycobacterium avium infection demonstrating unusual lobar caseous pneumonia.

Mycobacterium avium complex (MAC) infection is a major medical concern in Japan because of its increased prevalence and associated mortality. A common radiological feature in pulmonary MAC infection is a mixture of two basic patterns: fibrocavitary and nodular bronchiectatic; however, lobar consolidation is rare. We report an 83-year-old man with lobar caseous pneumonia caused by pulmonary MAC infection.