In the MAIS PIN-4 panel, where is p63 staining observed?

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Multiple Choice

In the MAIS PIN-4 panel, where is p63 staining observed?

Explanation:
In the MAIS PIN-4 panel, p63 is a nuclear transcription factor used as a basal cell marker in prostate tissue. Its staining is observed in the nuclei of basal cells, forming a nuclear pattern around benign glands. This contrasts with the other markers in the panel, which show cytoplasmic or membranous staining patterns. The presence of nuclear p63 staining indicates an intact basal cell layer (benign architecture), while its absence can raise concern for invasion by carcinoma. Therefore, p63 staining is observed in the nucleus.

In the MAIS PIN-4 panel, p63 is a nuclear transcription factor used as a basal cell marker in prostate tissue. Its staining is observed in the nuclei of basal cells, forming a nuclear pattern around benign glands. This contrasts with the other markers in the panel, which show cytoplasmic or membranous staining patterns. The presence of nuclear p63 staining indicates an intact basal cell layer (benign architecture), while its absence can raise concern for invasion by carcinoma. Therefore, p63 staining is observed in the nucleus.

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