Extramedullary plasmacytoma of the gingiva

Description

Extraosseous plasmacytoma, also referred to as extramedullary plasmacytoma (EMP), is defined by ICD-10 as a localised plasma cell neoplasm that arises in tissues other than bone.1 It is considered one of the three variants of plasma cell neoplasms, the other two being multiple myeloma (MM) and solitary bone plasmacytoma (SBP) (also known as medullary plasmacytoma).

EMP is a relatively rare lesion, constituting 3% of all plasma cell neoplasms.2 About 1% of head and neck tumours are EMPs. It is found most commonly in the head and neck region, with 80% of cases occurring in the nasopharynx, paranasal sinuses and tonsils.3 EMPs occur less commonly in the gingiva. The first case was documented by Martinelli and Rulli4 in 1968 as a sessile neoplasm in the gingiva from the lower left to right canine, which could be confused with chronic gingivitis....

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