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Non-Hodgkin lymphoma involving the parotid gland: CT and MR imaging findings.


ABSTRACT: OBJECTIVES: As an uncommon neoplasm, parotid non-Hodgkin lymphoma (NHL) comprises mucosa-associated lymphoid tissue (MALT) and non-MALT lymphomas. Both types of lymphoma vary in prognosis and treatment. The aim of this study was to explore CT and MRI characteristics of these two types of lymphoma. METHODS: 61 cases of parotid NHL, 34 MALT and 27 non-MALT lymphomas with histopathological confirmation were examined with routine CT and MR scans prior to treatment, and retrospectively reviewed. RESULTS: On CT and MRI, 34 MALT lymphomas presented with 11 solid and 23 solid-cystic forms, whereas 27 non-MALT lymphomas presented with 25 solid and 2 solid-cystic forms (p < 0.01). CONCLUSIONS: Parotid MALT lymphoma is characterized mainly by the solid-cystic form, whereas non-MALT lymphoma is characterized mainly by the solid form. The differences on CT and MRI can offer helpful information for differentiation of both types of parotid NHL.

SUBMITTER: Zhu L 

PROVIDER: S-EPMC3828024 | BioStudies | 2013-01-01

SECONDARY ACCESSION(S): 10.1259/dmfr.20130046

REPOSITORIES: biostudies

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