Sinonasal lymphoma

Sinonasal lymphoma refers to the involvement of the nasal cavity and/or paranasal sinuses with lymphoma. It can be primary or secondary.

Presenting symptoms of sinonasal lymphoma are are variable but are usually similar to those of benign inflammatory diseases. The clinical symptom spectrum includes nasal obstruction, rhinorrhea, bloody discharge/epistaxis, postnasal drip, facial swelling, neck mass, orbital symptoms, fever, and body weight loss.

It can be represented by various cytological types but the most common forms to arise in the sinonasal area is thought to be DLBCL (diffuse large cell B cell lymphoma), followed by nasal NK/T-cell lymphoma 3. There is a predilection for the nasal cavities involvement over the paranasal sinuses. 

Sinonasal lymphomas may be either seen as diffusely infiltrating lesions extending along walls of paranasal sinuses and nasal cavity or as discrete sinonasal soft tissue mass like lesions

CT

Soft tissue attenuating regions, either isoattenuating to the muscles or hyperattenuating due a high nucleocytoplasmic ratio. CT is good at assessing associated bone destruction.

MRI

MRI is considered the optimal imaging modality for assessing locoregional extent of disease:

  • T1: lesions appear as intermediate signal pattern
  • T2/STIR: hyperintense (more hyperintense on STIR)
  • T1 C+: contrast enhancement of lymphomas is variable, usually tends to be homogenous in pretreatment lymphomas
Lymphoma
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Article information

rID: 35364
Section: Pathology
Synonyms or Alternate Spellings:
  • Lymphoma involving the sinonasal cavity
  • Sinonasal lymphomas
  • Sinonasal involvement with lymphoma

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