The pathophysiologic mechanism underlying the hamartoma is thought to involve a biochemical fault in the interactions between differentiating epithelium and subjacent mesenchyme giving rise to an abnormal proliferation of adnexal and vascular structures.
Eccrine angiomatous hamartoma
Folliculosebaceous cystic hamartoma
Basaloid follicular hamartoma
Littoral cell angioma
Neural fibrolipoma
Aggressive angiomyxoma
Malignant acrospiroma
Keratin implantation cyst