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 Indian J Med Microbiol  
 

Figure 19 (A and B): Cross-section through left partial glossectomy with dorsal, lateral, and ventral (toward floor of mouth) mucosa (clockwise, starting from the top). (A) The focus of residual squamous cell carcinoma (between the white and black asterisks) shows no connection to mucosa. (B) Residual carcinoma is represented by foci of extensive perineural invasion. The potential reference points to measure the depth of invasion are along the dorsal, lateral, and ventral mucosa. On this section, depth of invasion was measured from the lateral mucosa (next to exclamation mark), because this area showed a focus of moderate-to-severe dysplasia. Hematoxylin and eosin, frozen section, images taken from the scanned whole slide image with original magnification of ×1.2

Figure 19 (A and B): Cross-section through left partial glossectomy with dorsal, lateral, and ventral (toward floor of mouth) mucosa (clockwise, starting from the top). (A) The focus of residual squamous cell carcinoma (between the white and black asterisks) shows no connection to mucosa. (B) Residual carcinoma is represented by foci of extensive perineural invasion. The potential reference points to measure the depth of invasion are along the dorsal, lateral, and ventral mucosa. On this section, depth of invasion was measured from the lateral mucosa (next to exclamation mark), because this area showed a focus of moderate-to-severe dysplasia. Hematoxylin and eosin, frozen section, images taken from the scanned whole slide image with original magnification of ×1.2