Mediastinal mature teratoma: imaging features.

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Abstract
The purpose of this study was to characterize the cross-sectional imaging features of mediastinal mature teratomas.Sixty-six cases of mediastinal mature teratoma were retrospectively reviewed, noting clinical, radiologic, surgical, and pathologic findings. The patient population consisted of 38 females and 28 males who were 1 week to 67 years old (mean age, 23 years 10 months).Forty-six patients presented with symptoms, predominantly chest pain, dyspnea, and cough. Twenty patients were asymptomatic. Fifty-four tumors were found in the anterior mediastinum, two in the posterior mediastinum, one in the middle mediastinum, and nine in multiple compartments. CT studies (n = 66) showed masses of heterogeneous attenuation with varying combinations of soft tissue, fluid, fat, and calcium. Soft-tissue attenuation was observed in 66 tumors (100%), fluid in 58 tumors (88%), fat in 50 tumors (76%), and calcification in 35 tumors (53%). The most frequent combination of attenuations was soft tissue, fluid, fat, and ca...

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