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A solitary raised and scaly nodule excised from the left forehead of an 80-year-old man was received for consultation. Sections of the lesion showed skin with well-delineated endophytic epithelial proliferations centred around hair follicles with inverted papillomatous and acanthotic components containing several circumscribed squamous eddies. There was no atypia, mitotic activity, necrosis or stromal invasion. No peripheral palisading was noted. This lesion was thought to be an inverted …
Competing interests: None.