A Rare Case of Low-Grade B-cell Non-Hodgkin's Lymphoma of the Lower Lip Mimicking a Mucocele.

In a clinical context, oral lymphomas are very uncommon and frequently challenging to identify. Mucosa-associated lymphoid tissue (MALT) lymphomas are a diverse category of lymphomas that were formerly believed to be formed from B-cells located in the marginal zone, which surrounds B-cell follicles and the surrounding lymphoepithelium. Extranodal organs like the stomach, thyroid, and large salivary glands are where they most frequently appear. As a result, they are accurately identified as extranodal marginal zone B-cell lymphomas (ENMZL). This report presents a case of a 53-year-old female with lower lip swelling, which was diagnosed as a case of marginal low-grade B-cell non-Hodgkin's lymphoma after clinical, histopathological, and immunological examinations. Non-Hodgkin's lymphoma diagnosis can be aided by pathological examination and biopsy performed early in the lesion's development. The dentist has a key role to play in the early diagnosis process.