case_images: PMC7257222_01
case_images: Fiberoptic findings in primary situation (a) and a modest improvement in edema and symptoms during prednisolone 60 mg/days treatment (b). Significant improvement in edema and symptoms 2 weeks after rituximab (c). Seven months after rituximab treatment, the patient was free of symptoms (d)
case_images: 13223_2020_441_Fig1_HTML.jpg
case_images: PMC7257222_01_13223_2020_441_Fig1_HTML.jpg
case_images: Fig1
case_images: Fiberoptic examination showed swelling of the lingual tonsil, epiglottic and arytenoid mucosa, causing airway obstruction (Fig. 1a). Her fiberoptic pharyngeal findings improved (Fig. 1).
case_images: Histological findings (a, b) showing granulomatous reaction in lingual tonsil with CD68 (Kp-1) positive epitheloid histiocytes by immunohistochemistry (c). Strong CD20-immunopositivity in B-lymphocytes (d). Most CD3-positive (e) T-lymphocytes showed also CD4-positivity (f)
case_images: 13223_2020_441_Fig2_HTML.jpg
case_images: PMC7257222_01_13223_2020_441_Fig2_HTML.jpg
case_images: Fig2
case_images: Histology showed granulomatous reaction in lingual tonsil with CD68+ (Kp-1) epithelioid histiocytes (Fig. 2).
case_images: Positron emission tomography:computed tomography showed increased activity (arrows) in the lingual tonsil (a, b) without evidence of widespread sarcoidosis (c)
case_images: 13223_2020_441_Fig3_HTML.jpg
case_images: PMC7257222_01_13223_2020_441_Fig3_HTML.jpg
case_images: Fig3
case_images: Positron emission tomography/computed tomography (PET/CT) showed increased fluorodeoxyglucose (FDG) uptake in the lingual tonsil, without evidence of widespread sarcoidosis (Fig. 3).