hamartoma

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hamartoma

[‚ha·mər′tō·mə]
(medicine)
An abnormal condition resulting in the formation of a mass of tissue of disproportionate size and distribution but composed of the normal tissue of the region.
References in periodicals archive ?
Neurocristic hamartoma (NCH) results from the aberrant development of neuromesenchyme.
The meaning of the hamartoma word is similar to nevi, but the former is related to a lesion inclined to deviate from the normal histological structure, whose components are not necessarily mature and may show a more extensive growth (MEHREGAN, 1986; WALDER & GROSS, 1992).
Se concluyo que se trataba de un quiste hepatico: linfangioma congenito versus hemangioma endotelial versus hamartoma mesenquimal.
Se ha propuesto una clasificacion de los (HH) basada en datos topograficos [3], estas lesiones pueden ser asintomaticas o pueden ir asociadas con ciertos problemas, entre ellos la pubertad precoz; no obstante estos avances y estudios, poco se conoce acerca de la historia natural de los Hamartomas hipotalamicos [4],.
We describe a case of adenocarcinoma within a retrorectal cystic hamartoma, initially manifesting in a 54-year-old woman and recurring over a 5-year period.
Cysts and bile duct hamartomas are hypointense in T1 and hyperintense in T2; they are differentiated by a thin ring of gadolinium enhancement, hemangiomas are more common in women, they are hypointense in T1 and moderately hyperintense in T2, with a centripetal enhancement in the arterial phase.
Most hamartomas can be diagnosed with mammography alone when they present as well-defined, dense masses with a radiopaque pseudocapsule and radiolucent fat halo surrounding them.
Primary Diagnostic Criteria of Tuberous Sclerosis * Cortical tubers * Facial angiofibromas * Retinal hamartomas * Subependymal glial nodules * Ungual fibromas Modified from Gomez[14] and Roach, et al[23,24]
Surgical removal of hamartomas and other benign brain tumors is often difficult or impossible, and doctors usually choose not to operate when the only serious complication of these tumors is precocious puberty.
Hamartomas are a circumscribed benign nodule composed of variable amounts of fat, glandular tissue, and fibrous connective tissue.
Splenic hamartomas are mixtures of disorganized vascular channels and fibrotic red or white pulp elements.