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  • Title: [Study of malignant lymphoma in the parotid gland region].
    Author: Nagata M, Kumazawa H, Iwai H, Momotani A, Shiraishi S, Yamashita T.
    Journal: Nihon Jibiinkoka Gakkai Kaiho; 1996 Jun; 99(6):918-25. PubMed ID: 8753077.
    Abstract:
    Malignant lymphomas arising in the salivary glands are very uncommon. The vast majority of these lesions are classified as extranodal non-Hodgkin's lymphoma. Clinical presentation, management, histopathology, and outcome in 11 cases of non-Hodgkin's lymphomas of the parotid gland region were reviewed. The ages of the patients ranged from 25 to 80 years (average 56.0 years) and the male to female ratio was 5:6. Presenting symptoms were painless masses (10 cases) and a painful mass (1 case) in the parotid gland region. None of the patients had facial nerve paralysis. It seems to be difficult to diagnose malignant lymphomas of the salivary glands preoperatively, because an open biopsy of the salivary glands is generally contraindicated. We failed to diagnose malignant lymphoma in the parotid gland preoperatively. The clinical stages were stage I in 5 cases, stage II in 5 cases, and stage III in 1 case. There was no patient with stage IV. Three of the stage I tumors were diagnosed as MALT (mucosa-associated lymphoid tissue) lymphomas. Eight of the tumors were treated surgically and an open biopsy of the parotid gland tumor was performed in 1 case and open biopsy of a neck lymph node in 2 cases for the purpose of diagnosis. After the diagnosis, these cases were followed up with or without radiotherapy and chemotherapy. Follow-up ranged from 6 to 109 months. The 5-year-survival rate was 60%. The outcome for this group was found to be as good as that reported by others.
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