Ectopic Cushing’s Syndrome Unveiling a Metastatic Parotid Carcinoma

Figure 3

Histology–ACC: solid pattern and necrosis (H&E staining) (a); typical acinar cells with diastase-resistant PAS-positive granules (PAS-D staining) (b). The tumour cells showed strong immunoreactivity for DOG1 (c), being negative for ACTH immunostaining (d). ACC: acinic cell carcinoma; H&E: hematoxylin and eosin; PAS: periodic acid–schiff; PAS-D: PAS–diastase; DOG1: discovered on GIST-1; ACTH: adrenocorticotropic hormone.

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