Figure 20
From: Virus-associated neoplasms of the nasopharynx and sinonasal tract: diagnostic problems
Extranodal NK/T-cell lymphoma of nasal cavity. The mucosa shows a dense infiltrate of lymphoid cells. The surface epithelium is intact in this example (left upper). This example shows the typical ulceration and necrosis (right upper). The lymphomatous infiltrate causes wide separation or disappearance of mucosal glands. Clear cell change is common in the residual mucosal glands (left lower). Angiocentric growth is a common feature (right lower).
