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Cir Cir ; 82(3): 302-8, 2014.
Article in Spanish | MEDLINE | ID: mdl-25238472

ABSTRACT

BACKGROUND: Hypoplasia of the internal carotid artery is a rare congenital malformation. It has been mainly associated with aneurysms and other pathologies but not in association with paraganglioma. The incidence is 0.01% of all the anomalies of carotid vessels. Although the exact cause is unknown, it is thought to represent a sequel to an insult due to mechanical causes or hemodynamic stress but perhaps also involves aspects of molecular biology of embryonic development. CLINICAL CASE: We describe the case of a 37 year-old female patient with paraganglioma associated with hypoplasia of the internal carotid artery, which was found incidentally during surgery. Previous angiographic studies as well as other analyses were carried out, but we failed to detect hypoplasia of the internal carotid artery. Tumor was removed along with ligation of the external carotid artery due to injury. The hypoplastic internal carotid artery was left intact. CONCLUSION: Angiographic studies of the base of the skull are important as well as hemodynamic analysis in order to not overlook these anomalies. The patient had a satisfactory evolution without sequelae.


Antecedentes: la hipoplasia de la arteria carótida interna es una rara malformación congénita. Se le ha relacionado principalmente con aneurismas y otros padecimientos, pero no con paraganglioma. Su incidencia es menor de 0.01% de todas las anomalías de los vasos carotídeos. Aunque su origen exacto no se conoce, se cree que es una secuela de una lesión provocada por causas mecánicas o por estrés hemodinámico; sin embargo, también pudieran estar implicados aspectos de biología molecular del desarrollo embrionario. Caso clínico: se describe un caso raro de una mujer de 37 años de edad con paraganglioma concomitante con hipoplasia de la arteria carótida interna. En estudios angiográficos y análisis rutinarios previos no se había detectado alteración de la arteria carótida interna. En la intervención se extirpó el tumor y se ligó la arteria carótida externa dado que estaba involucrada en la lesión; se dejó intacta la arteria carótida interna hipoplásica. Conclusión: es importante realizar estudios angiográficos de la base del cráneo, así como análisis hemodinámicos para no pasar por alto estas anomalías. La evolución fue satisfactoria y sin secuelas.


Subject(s)
Carotid Artery, Internal/abnormalities , Carotid Body Tumor/pathology , Adult , Carotid Artery, External/embryology , Carotid Artery, External/surgery , Carotid Artery, Internal/embryology , Carotid Body Tumor/physiopathology , Carotid Body Tumor/surgery , Cerebral Angiography , Congenital Abnormalities/embryology , Congenital Abnormalities/epidemiology , Female , Hemodynamics , Humans , Incidence , Incidental Findings , Ligation , Magnetic Resonance Imaging
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