Background: Generally computed tomography (CT) imaging findings
of PAF present as well-defined, homogeneous and solitary nodules.
Current evidence shows, no cases of PAF with central liquefaction
necrosis on CT. Case Report: A 70-year-old man was hospitalized
due toan inguinal hernia without respiratory symptoms. Chest CT scan
revealed a tumor (about 6.5cm*5.5cm) in the lower lobe of the left lung.
According to a contrast-enhanced scan, the lesion was slightly enhanced,
and liquefaction necrosis appeared in the center. Wedge resection was
performed by video-assisted thoracic surgery(VATS). The postoperative
pathology diagnosis was PAF. Conclusion: PAF with liquefied
necrosis in the center of the tumor on CT is very rare and needs to be
differentiated from malignant tumors and solitary fibrous tumor through
histopathology and even immunohistochemistry.