Background:Malignant lymphomas are neoplasms originating from lymphocytes, whose precursor cell or cells are generated during the multipotential differentiation of a stem cell. Extranodal localization most often involves the Waldeyer’s ring, nasal cavity, maxillary sinuses, eyeballs, salivary glands, oral cavity, stomach or skin. Localization in the nervous system or facial bones is very rare.Case Report:This article presents a rare case of a patient with B-cell lymphoplasmocytic lymphoma located in the jaw bones. The diagnosis was established after histopathological investigation of periapical lesions. Due to the localized growth of the malignant lymphoma, the patient underwent surgery combined with radiotherapy. The follow-up period amounted to 14 months and the patient now presents without recurrences or lymphadenopathy.Conclusions:All periapical lesions should be sampled for histopathological examination, possibly revealing a hidden neoplastic process.

Keywords: Lymphoma, B-Cell - diagnosis, Lymphoma, B-Cell - pathology, Lymphoma, B-Cell - radiotherapy, Lymphoma, Small-Cell - diagnosis, Lymphoma, Small-Cell - pathology, Lymphoma, Small-Cell - radiotherapy, Maxillary Neoplasms - diagnosis, Maxillary Neoplasms - pathology, Maxillary Neoplasms - radiotherapy, Tomography, X-Ray Computed