A. Wrong, BCA lacks peripheral clefting and papillary architectural pattern of tumor nests which were clearly present in this case. Moreover, BCA is characterized by the tubule-trabecular architectural pattern which is not present in this case
B. Right, Note the multinodular growth of the tumor nests taking diverse architectural patterns: solid, glomeruloid (image 4), papillary (image 5), cribriform. Peripheral palisading and clefting were evident in all fields. Moreover, vesicular nuclei with Orphan-Annie eye appearance were detected.
C. Wrong, ACC lacks peripheral palisading and clefting which were clearly present in this case
Right, Note the multinodular growth of the tumor nests taking diverse architectural patterns: solid, glomeruloid (image 4), papillary (image 5), cribriform. Peripheral palisading and clefting were evident in all fields. Moreover, vesicular nuclei with Orphan-Annie eye appearance were detected.
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