hamartoma

hamartoma /ham·ar·to·ma/ (ham″ahr-to´mah) a benign tumor-like nodule composed of an overgrowth of mature cells and tissues normally present in the affected part, but with disorganization and often with one element predominating.

---

ham·ar·to·ma (hmär-tm)

n. pl ham·ar·to·mas or ham·ar·to·ma·ta (-m-t)

A benign tumorlike malformation resulting from faulty development in an organ and composed of an abnormal mixture of tissue elements that develop and grow at the same rate as normal elements but are not likely to compress adjacent tissue.

---

hamar·toma·tous (-tm-ts, -tm-) adj.

---

hamartoma,

a new tissue growth resembling a tumor. It results from a defective overgrowth in tissue formation.

---

hamartoma (ham´ärtō´m),

n a localized error in the composition of the tissue elements of an organ. May be automatically manifested in three ways, either singly or in combination: abnormal quantity, abnormal structure, or degree of maturation of the tissue components.

---

hamartoma

a benign tumor-like nodule composed of an overgrowth of mature cells and tissues normally present in the affected part, but often with one element predominating.

---

hamartoma adenomatoid

see bronchial hypoplasia.

gingival hamartoma

pink, lobulated, often pedunculated masses on the gums of newborn calves; soon become inflamed and ulcerated resembling chronic granulation tissue.

lymphangiomatous hamartoma

a lymphangioma occurring as a congenital malformation.

vascular hamartoma

tumor mass, usually dermal, consisting of primitive to well formed blood vessels.

---

hamartoma

A tumor-like, non-neoplastic disordered proliferation of mature tissues that are native to a site of origin–eg, exostoses, nevi and soft tissue hamartomas; although most hamartomas are benign, some histologic subtypes–eg, neuromuscular hamartoma, may proliferate aggressively. See Mesenchymal cystic hamartoma, Sclerosing epithelial hamartoma, Sclerosing metanephric hamartoma.