8C2 Cyst, arachnoid (Case 8) PR 1 | Cyst - Arachnoid | DEVELOPMENTAL MALFORMATIONS

Washington University Experience | DEVELOPMENTAL MALFORMATIONS | Cyst - Arachnoid | 8C2 Cyst, arachnoid (Case 8) PR 1

Progesterone receptor immunohistochemistry demonstrates the arachnoidal epithelium (arrows) in the same field as #8B1 & #8C1 (PR IHC).