Metastatic minimally invasive (encapsulated) follicular and Hurthle cell thyroid carcinoma: a study of 34 XXXX .

@entity1 @entity5 @entity189 @entity1358 @entity3
Most studies that have examined minimally invasive, encapsulated, @entity189 ( @entity189 ) or @entity1358 ( @entity1358 ) have contained only a few metastatic @entity5 . We studied 34 @entity1 with a single, minimally invasive, metastatic @entity189 or HC and compared them with 38 @entity1 with similar, nonmetastatic FCs or @entity1358 . The numbers of incomplete capsular penetration ( @entity5 into but not through the capsule), complete capsular penetration ( @entity5 through the capsule), and vascular invasion foci were quantified. The median number (three), range, and distribution of complete capsular penetration and vascular invasion foci were similar in the nonmetastatic and metastatic @entity189 . All of the metastatic FCs and @entity1358 had at least one vascular invasion or complete capsular penetration focus. Sixty-two percent of the metastatic @entity189 had two to four complete capsular penetration foci, and 60% had two to four vascular invasion foci. Two metastatic @entity5 had incomplete capsular penetration but had one and two vascular invasion foci, respectively. One @entity5 had no vascular invasion but had four complete capsular penetration foci. No metastatic @entity5 had incomplete capsular penetration only. There were no differences in the number of vascular invasion or complete capsular penetration foci between metastatic and nonmetastatic FCs and @entity1358 and between metastatic FCs and @entity1358 . Most metastatic @entity5 had vascular space invasion and complete capsular penetration. The number of complete capsular penetration or vascular invasion foci was not associated with the initial site of @entity3 or the interval between the surgery and the @entity3 .
