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. 2022 Oct 4;52(1):201–214. doi: 10.1016/j.gtc.2022.09.003

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Fig. 1 — Macroscopic examination of fresh (A) and fixed (B) hypopharynx, with two necrotic ulcer (white arrows in A). (C) Histopathology of ulcer in hypopharynx. (D) Inflammatory infiltration of the muscle layer with necrosis and degeneration of the skeletal muscle fibers (E–H). Moderate lympho-monocytic infiltration in esophageal mucosa (E––anti-CD68; F––anti-CD3; G––anti-CD20; H––positive for SARS-CoV-2 spike subunit 1, black arrows).

(Porzionato A, Stocco E, Emmi A, et al. Hypopharyngeal Ulcers in COVID-19: Histopathological and Virological Analyses - A Case Report. Frontiers in immunology. 2021;12:676828. https://doi.org/10.3389/fimmu.2021.676828)