[Pulmonary Hematoma Likely due to a Contralateral Chest Injury, Requiring Differentiation from Lung Tumor:Report of a Case].

A 23-year-old man was referred to our department for chest abnormal shadow. Computed tomography (CT) of the chest revealed a well-defined 1.2 cm nodule in the S4 segment of the right middle lobe and a well-defined 1.8 cm nodule in the S10 segment of the right lower lobe. The patient was found to have a fracture in the left fifth rib due to the falling accident at playing snowboard, two months before. He was diagnosed with a benign tumor in the right middle lobe and the right lower lobe and was performed surgery. Thoracoscopy revealed a yellowish-brown tumor in the right middle lobe( S4) and a yellow-brown tumor in the right lower lobe( S10). Both lesions were diagnosed as clots by rapid intraoperative pathologic diagnosis. Histopathological diagnosis was an intrapulmonary hematoma.