[Analysis of the clinical features of mucosa-associated lymphoid tissue lymphoma of the parotid gland].

Objective:To investigate clinical features of mucosa-associated lymphoid tissue lymphoma(MALT) of the parotid gland. Method:Retrospective analysis was made in 10 patients who were dignosed as MALT of the parotid gland. Clinical symptoms, CT scanning and pathologic immunohistochemistry data, surgery procedure and prognosis were collected for analysis. Result:The main complain of patients was slow growing masses under the earlobes without pain. The lesion location was found at the superficial lobe of the parotid gland in 8 cases and deep lobe in 2 cases, respectively．CT scanning exhibited density isodense or hyperdense nodules, with occasional calcification and necrosis in these patients. Enhancement CT scanning exhibited lower or moderate enhancement, circumambient enhancement or delayed enhancement. Pathological examinations showed that the gland was heavily infiltrated by lymphoid cells and epimyoepithelial island were frequently observed. B-lymphocyte was found positive in these patients by histopathological examination. All patients underwent surgical treatment. According to the tumor sites, patient received the superficial parotidectomy or total parotidectomy. The postoperative follow-up period was 1 to 7 years. No tumor recurrence occurred in any patients during the follow-up time. Conclusion:The diagnosis of MALT lymphoma of the parotid gland should combined with clinical manifestation, imaging examination and pathology.symptoms,CT scanning and pathologic immunohistochemistry data. Surgery was the major treatment, combined with postoperative radiation and chemotherapy, the prognosis is good, However, long-term efficacy need further observation．.