A 32-year-old man presented with a mass located in the right upper quadrant. He had a pedunculated lesion and a clinical diagnosis of pyogenic granuloma. He was 1 cm tall and 0.6 cm in diameter at his base.
The rest of the systemic exploration was normal.
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Surgical excision was performed by performing a full-thickness pentagon that included the lesion.
The histopathological diagnosis was pilomatricoma by the description of a solid, encapsulated mass consisting of a mass of pilomatric cells arranged in the periphery, large masses of granulomatous body reaction and isolated areas of foreign body.
The greater the increase, small basaloid cells without cytological atypia are identified.
In the most central area, the cells are larger, of eosinophilic cytoplasm with loss of the nucleus (phantasma).
Among these two predominant cell types there are transitional cells.
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After 4 years of follow-up, no recurrence or malignancy was observed.
