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. 2015 Oct 7;93(4):822–827. doi: 10.4269/ajtmh.15-0355

Figure 4.

Figure 4.

(A) Immunohistochemistry for ACTH appears brown in the specimen, which was only found in the very periphery of the lesion. (B) The normal acinar structure of the pituitary gland is focally disrupted by the unregulated growth of the ACTH-producing microadenoma.