Sonographic appearance of primary XXXX -preliminary experience.

@entity3329 @entity706 @entity730 @entity1892 @entity5651 @entity259 @entity1374
OBJECTIVE: Primary @entity706 (PTL) is an uncommon @entity1374 . Despite the rarity of PTL, it is important to recognize PTL promptly because its management differs from that of all the other @entity259 . This study was designed to investigate the sonographic features of PTL. METHODS: Twenty-seven pathologically confirmed PTLs were categorized into diffuse and non-diffuse type. Sonographic features including thyroid size, thyroid background echotexture, lesion size, echogenecity, @entity730 , vascularity, cervical @entity3329 of each type were retrospectively analyzed. RESULTS: All 27 PTLs were diffuse large @entity1892 and were accompanied by @entity1374 . Ten were diffuse type and seventeen were non-diffuse type sonographically. The observations in diffuse group included @entity5651 (10/10, 100.0%), marked echogenesity (10/10, 100.0%), heterogeneous echotexture (10/10, 100.0%), and cervical @entity3329 (4/10, 40.0%). The observations in non-diffuse group included marked hypoechogenicity (17/17, 100.0%), heterogeneous background thyroid gland (17/17, 100.0%), @entity5651 (15/17, 88.2%), increased vascularity (8/13, 61.5%), mulifocality (10/17, 58.8%), and cervical @entity3329 (7/17, 41.2%). CONCLUSIONS: Although some common features were found, the sonographic appearance of PTL is unspecific, especially for the diffuse type. Therefore, interventional diagnostic procedures should be warranted in the clinical settings when PTL is suspected.
