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.