What serves as the diagnostic histological hallmark for peripheral giant cell granuloma ?
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Answer: B. Multinuclear giant cells
Explanation
Multinuclear giant cells serve as the definitive histological hallmark for peripheral giant cell granulomas. These numerous giant cells are scattered throughout a vascular fibrous connective tissue stroma. Microscopic identification of these cells confirms the diagnosis of this reactive gingival lesion. Peripheral giant cell granulomas arise exclusively on the gingiva or edentulous alveolar ridge. Local trauma or chronic irritation stimulates the proliferation of osteoclast-like giant cells. Surgical excision down to the underlying bone prevents recurrence of the reactive lesion.
Patients present with red or purplish nodular gingival masses that bleed easily upon trauma. Dentists include this lesion in differential diagnoses for localized reactive gingival overgrowths. Biopsy confirmation ensures proper management and rules out central intraosseous giant cell lesions. Masses of granulation tissue occur in various inflammatory conditions without specific giant cells. Keloid-like enlargements involve dense collagen scar tissue formation seen in dermal sites. Atrophic epithelium represents a secondary mucosal change rather than the primary diagnostic hallmark.
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