IntroductionLymphomas are a heterogeneous group of malignant neoplasms of lymphocytes and their precursor cells. Lymphoma is seen 3.5% of all intraoral malignancies and is the second most common neoplasm after the squamous cell carcinoma in the head and neck region. Diffuse large B‐cell lymphomas (DLBCL), which is a subtype of non‐Hodgkin lymphoma, are seen mostly in the paraoral region.Case presentationAn 82‐year‐old woman was referred with a localised swelling of the mandibular buccal mucosa for 3 months. Excisional biopsy revealed the diagnosis of DLBCL in the mandible and chemotherapy regimen started immediately. However, patient died during treatment.ConclusionsNon‐Hodgkin's lymphomas would be late‐ or misdiagnosed in the perioral region that may result poor prognosis.
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