Multiple Pulmonary Sclerosing Hemangiomas of Unilateral Lung Mimicking Metastatic Lung Cancer

Pulmonary sclerosing hemangioma often presents as a peripheral and solitary nodule in asymptomatic middle-aged women and is considered to be a benign tumor. Little is known regarding the appearance of these tumors with multiplicity. We report a rare case of multiple pulmonary sclerosing hemangiomas of the left lower lung in an asymptomatic 20-year-old man. He was initially misdiagnosed with metastatic lung cancer until he underwent video-assisted thoracoscopic surgery to confirm the diagnosis. Due to the controversy surrounding the use of invasive surgery or conservative treatment, the patient was kept on observation after the surgery. No any respiratory symptoms have happened to him for 2 years after the operation. This case demonstrates that multiple pulmonary sclerosing hemangiomas should not be misdiagnosed and close post-operative follow-up is necessary for conservative treatment.