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Difference between revisions of "Schwannoma"
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**Usually +ve (~75% of the time) in meningiomas.<ref>{{Cite journal | last1 = Rushing | first1 = EJ. | last2 = Bouffard | first2 = JP. | last3 = McCall | first3 = S. | last4 = Olsen | first4 = C. | last5 = Mena | first5 = H. | last6 = Sandberg | first6 = GD. | last7 = Thompson | first7 = LD. | title = Primary extracranial meningiomas: an analysis of 146 cases. | journal = Head Neck Pathol | volume = 3 | issue = 2 | pages = 116-30 | month = Jun | year = 2009 | doi = 10.1007/s12105-009-0118-1 | PMID = 19644540 }} | **Usually +ve (~75% of the time) in meningiomas.<ref>{{Cite journal | last1 = Rushing | first1 = EJ. | last2 = Bouffard | first2 = JP. | last3 = McCall | first3 = S. | last4 = Olsen | first4 = C. | last5 = Mena | first5 = H. | last6 = Sandberg | first6 = GD. | last7 = Thompson | first7 = LD. | title = Primary extracranial meningiomas: an analysis of 146 cases. | journal = Head Neck Pathol | volume = 3 | issue = 2 | pages = 116-30 | month = Jun | year = 2009 | doi = 10.1007/s12105-009-0118-1 | PMID = 19644540 }} | ||
</ref> | </ref> | ||
==Sign out== | |||
<pre> | |||
LESION, LEFT ANTERIOR TIBIA, EXCISION: | |||
- SCHAWANNOMA. | |||
- NEGATIVE FOR MALIGNANCY. | |||
</pre> | |||
===Micro=== | |||
The sections show a soft tissue spindle cell lesion cellular fibrillary areas (Antoni A) and pauci-cellular microcystic area (Antoni B). There are paucinuclear areas surrounded by clusters of nuclei (Verocay bodies). Thick hyaline blood vessels are present within the lesion. There is no apparent nuclear atypia. Mitotic activity is not readily apparent. No nerve is seen adjacent to the lesion. The lesion is partially encapsulated by a fibrous tissue. Focally, ink is seen on the lesional cells. | |||
==See also== | ==See also== | ||