Primary XXXX : spindle cell variant of @entity3557 ?

@entity1 @entity3557 @entity10922 @entity5 @entity3745 @entity15529 @entity259
Primary @entity259 or spindle cell component in the @entity259 are very rare. The @entity5 cells were positive for @entity3557 markers. So these @entity5 were diagnosed as spindle cell variant of @entity3557 ( @entity3557 ). To further delineate clinico-pathological features of primary @entity259 and discuss differential diagnosis, we reported a 67-year-old @entity1 with a mass in the right thyroid without clinical symptom. Microscopy revealed that an encapsulated @entity5 with lot criss spindle cells arranged in bundles. Nuclear grooves were easy to see and rare displayed pseudoinclusions. Immunohistochemical studied showed that the spindle cells were all strong positive for @entity10922 , @entity15529 , @entity3745 . Rare follicular were seen in the periphery of the @entity5 near the thyroid tissue. The cells formed follicular but the @entity5 cells were positive for pan-keratins. The pathological diagnosis was primary @entity259 , suspected spindle cell variant of @entity3557 . Primary @entity259 were presence and without the unified name. The further reports and more discussion were need about these @entity5 .
