Pyogenic Granuloma (Lobular Capillary Hemangioma): A Clinicopathologic Study of 178 Cases

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Abstract
Pyogenic granuloma (lobular capillary hemangioma) is a common acquired vascular lesion of the skin and mucous membranes in the pediatric age group. This is a retrospective analysis of 178 patients, 17 years of age and younger (mean age 6.7 yrs). Forty‐two percent of the lesions occurred in the first five years of life; only 12% appeared in infants less than 1 year old. The male:female ratio was 3:2. Most patients (74.2%) had no history of trauma or predisposing dermatologic condition. The mean lesional size was 6.5 mm and the mean duration at diagnosis was 3.8 months. The granulomas were most commonly located in the head and neck area (62.4%), followed in order of decreasing frequency by trunk (19.7%), upper extremity (12.9%), and lower extremity (5.0%). The preponderance (88.2%) occurred on the skin, the remaining ones involved the mucous membranes of the oral cavity and conjunctivae. Histologic examination demonstrated normal numbers of mast cells, in contrast to increased mast cells characteristic of proliferative phase hemangiomas. Most lesions (n = 149) were treated by full‐thickness skin excision and linear closure; there were no recurrences in this group. The recurrence rate in 23 lesions treated by shave (intradermal) excision and cautery or cautery alone was 43.5%.

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