📸 Amazing how the background parotid tissue fills in so nicely on permanent sections (it is the same block! I promise!) Can better appreciate variations in cellularity and patchy hemorrhage that contribute to the gross appearance
📸 chondroid matrix, ducts and myoeps on permanent sections

#PathSky

📸 frozen section, tumor capsule
📸 frozen section, epithelial cells (ducts) and myoepithelial cells
📸 frozen section, nests of myoepithelial cells in myxochondroid matrix

Dx: pleomorphic adenoma

#Pathsky

Folliculocentric dyskeratotic process w/warty surface keratosis, suprabasal clefting, villous rete & dyskeratotic cells [corps ronds (round) and grains (flat)]

#dermpath #Pathsky #ENTsky #Otosky

B: bacteria in the low mag picture. Pt likely has an underlying laryngeal chondronecrosis.

These tyrosine-like crystalloids seem to localize most frequently to the true cord, particularly near the macula flava

PMID: 39177813

Pathologic staging = pT4a related to bone invasion (focally invades into submucosa/mucosa of maxillary sinus, no impact on pathologic stage though).

This particular case is high grade.

📸 tumor necrosis, solid growth, and increased mitotic rate (3 in this high power field alone).
📸 EWSR1 break apart FISH positive

#PathSky

Thank you 🙏

Hello! I’m an oral, head and neck pathologist and like to be included pls

Concentric layers of bacteria and debris: pics➡️Center of the calculus; layered regions; and two pics demonstrating the peripheral textured region of the calculus that originally caught my eye macroscopically