Peripheral Giant Cell Granuloma
Also written as: PGCG — Peripheral Giant Cell Granuloma
A reactive gingival lesion composed of multinucleated giant cells within a vascular stroma, arising exclusively on the gingiva or alveolar ridge.
Full Definition
Peripheral giant cell granuloma (PGCG) is a reactive, exophytic gingival lesion that arises from the periosteum or periodontal ligament in response to local irritation or trauma. Histologically, it consists of multinucleated osteoclast-like giant cells within a vascular fibrous stroma, often with areas of haemorrhage and haemosiderin deposition. It is the peripheral (extraosseous) counterpart of the central giant cell granuloma. Editors must ensure the anatomical qualifier 'peripheral' is preserved and not confused with the central lesion, which has different biological behavior and management implications. The lesion is not a true granuloma in the immunological sense.
Usage
Usage note: 'Peripheral' must not be omitted; omission fundamentally changes the diagnosis. 'Giant cell epulis' is an acceptable informal synonym in clinical notes but not in formal pathology reports.
In Context
- "The peripheral giant cell granuloma was excised along with the local irritant, with instructions to the editor to preserve 'peripheral' in the diagnosis line." — Pathology report editorial review
- "Unlike its central counterpart, peripheral giant cell granuloma does not cause significant cortical bone expansion." — Review article