Correlative analysis on CT features and pathology of pulmonary sclerosing pneumocytoma / 实用放射学杂志

ABSTRACT

Objective To analyze the MSCT features of pulmonary sclerosing pneumocytoma (PSP)combined with pathologic findings,to improve understanding of imaging features of PSP.Methods The clinical features of 38 PSP patients confirmed by pathology between 2006 and 2015 were reviewed.All patients underwent MSCT plain and enhanced scan.The imaging findings were studied retrospectively combined with clinical pathology.Results 38 lesions were solitary roundlike nodules and masses.Among which 1 9 lesions were less than 3 cm, 9 lesions were more than 5 cm and 10 lesions were between 3 cm and 5 cm.6 lesions had cystic degeneration,13 lesions had calcification;8 lesions with heterogeneous density showed maplike distribution on unenhanced scans;1 9 lesions were homogeneous enhancement;1 9 lesions maplike heterogeneous enhancement,and 3 of 1 9 had significant peripheral enhancement;35 lesions were progressive enhancement. There were strip-shape vessels in 10 lesions in arterial phase,welt vessel sign in 26 lesions;halo sign in 8 lesions,air-meniscus sign in 3 lesions,pulmonary artery sign in 10 lesions,and tail sign in 9 lesions.There was halo sign with air-meniscus sign in 1 lesion.Conclusion PSP has the general characteristics of benign tumors,and there have certain characteristics in calcification,density distribution,enhancement form and adjoint features.A comprehensive analysis of all the MSCT features combined with clinical pathology can help to improve the accuracy of diagnoses in PSP.