Pulmonary adenofibroma with central liquefaction necrosis: A case report.

Pulmonary adenofibroma (PAF) is a rare benign tumor. Computed tomography (CT) imaging of PAF show well-defined, homogeneous and solitary nodules. To the best of our knowledge, there is no report of PAF presenting with central liquefaction necrosis on CT images. The present study reports the case of a 70-year-old man who was hospitalized due to an inguinal hernia without respiratory symptoms. Chest CT scan revealed a tumor (~6.5x5.5x4.4 cm) in the lower lobe of the left lung, characterized by uneven density and unclear boundary with the pleura. Contrast-enhanced scan revealed that the lesion was slightly enhanced and liquefaction necrosis appeared in its center. Wedge resection was performed using video-assisted thoracic surgery. Histopathological and immunohistochemical examination confirmed the diagnosis of PAF.