AIIMS MCQ for Medical PG Preparations .. NIME | Antoni A &AntoniB Pattern's MCQ

Antoni A &AntoniB Pattern's are seen in
A. Schwannoma
B. Neurofibroma
C. Meningioma
D. Teratoma

Ans. A.  Schwannoma

•   Distinctive histologic patterns seen within the peripheral nerve sheath tumor Schwannoma include the Antoni A and Antoni B regions

•   These are the classic microscopic appearances of a schwannoma, which is benign.

•   Note the more cellular "Antoni A" pattern on the left with palisading nuclei surrounding pink areas (Verocay bodies). On the right is the "Antoni B" pattern with a looser stroma, fewer cells, and myxoid change.

•   Notice the whirly swirly pattern and how the cell nuclei are closely bunched together ... almost as if they're forming a fence (Verocay bodies).

•   Schwannomas are benign spindle cell tumors that occur along the edges of peripheral nerves.They can usually be removed without damaging the nerve itself.