Abstract
Background: Clear cell tumor of the lung (CCTL) is a rare and mostly benign pulmonary neoplasm arising from perivascular epithelioid cells. Only about 100 cases have been reported and half of them were in China. Limited details about CCTL often cause diagnostic or therapeutic problems. Case presentation: We describe a case of 28-year-old woman with gradually increased and enlarged multiple nodules in the left lower lobe. The patient underwent a fine-needle aspiration biopsy and was considered as CCTL. A left lower lobectomy and mediastinal lymph node dissection was performed. The gradual changes in size (1.4 cm to 2.8 cm) and quantity (10 to 49) of CCTL in this case was the biggest difference from previously reported cases. Conclusions: CCTL is a very uncommon and mostly benign PEComatous tumor with no specific morphologic features. We present a case of CCTL with multiplicity and rapid growth, which may indicate its aggressive nature. The accumulation of similar cases will help clarify its exact disease nature and to improve our understanding of such tumor.
An unexpected zoonosis: pulmonary dirofilaria infection mimicking pulmonary neoplasm
