Figure 3.
a, b: Intraoperative findings
A large amount of yellowish-white debris was found in the right maxillary sinus (ab: yellow arrow), and part of the maxillary sinus mucosa exhibited pathological edema (a: white triangle).
c: Photomicrograph of the biopsy specimen of the maxillary sinus mucosa (a: white triangle, hematoxylin and eosin, × 2)
Most tissue exhibited granulomatous changes and necrosis, with some atypically large lymphocytes.
d: Photomicrograph of the biopsy specimen of mucous accumulation and debris obtained from the maxillary sinus (ab: yellow arrow, hematoxylin and eosin, × 10)
The tissue was predominantly necrotic. Some of it contained large transformed lymphoid cells with vesicular nuclei and prominent nucleoli, suggestive of diffuse large B-cell lymphoma.
MS, maxillary sinus; IT, inferior turbinate; NS, nasal septum; HE, hematoxylin and eosin.