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Vol. 37. Issue 1.
(January - February 2026)
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Vol. 37. Issue 1.
(January - February 2026)
Investigación clínica

Impacto de las malformaciones arteriovenosas en los giros precentral y poscentral sobre los volúmenes intracraneales

Impact of arteriovenous malformations in the precentral and postcentral gyri on intracranial volumes
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Abdulkerim Gokoglua,
Corresponding author
akerimg@hotmail.com

Autor para correspondencia.
, Hüseyin Yiğitb, Tolga Turan Dündarc, Erdoğan Unurd, Ahmet Selçuklue
a Department of Anatomy, Erciyes Medical School, Kayseri System Hospital, Department of Neurosurgery, Former Post-doctoral Fellow of Harvard Medical School, Kayseri, Turquía
b Vocational Health School, Cappadocia University, Nevşehir, Turquía
c Department of Neurosurgery, Bezmialem Vakif University, Estambul, Turquía
d Department of Anatomy, Erciyes Medical School, Kayseri, Turquía
e Department of Neurosurgery, Erciyes Medical School, Kayseri, Turquía
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Objetivo

Las malformaciones arteriovenosas son conocidas como shunts arteriovenosos que conectan el nidus, las arterias nutricias, con las venas de drenaje. Aunque no son muy comunes en el cerebro, son responsables de aproximadamente el 2% de todos los ictus. Los cambios volumétricos en los tejidos cerebrales circundantes causados por las malformaciones arteriovenosas cerebrales aún no se han reportado.

Métodos

Para detectar estos cambios volumétricos se adquirieron datos de resonancia magnética (RM) de 38 controles y 25 pacientes no operados con malformaciones arteriovenosas en el giro precentral y poscentral. Los datos de RM fueron analizados con los pipelines vol2Brain, Ceres y HIPS. Los nidus de estos pacientes fueron resecados mediante disección microquirúrgica transsulcal.

Resultados

Se realizó un análisis volumétrico integral que abarcó 135 estructuras distintas del cerebro, cerebelo e hipocampo utilizando el software Vol2brain. La comparación entre el grupo de pacientes y el grupo de control reveló diferencias volumétricas significativas. Específicamente, el grupo de pacientes exhibió volúmenes significativamente mayores en el núcleo accumbens, el giro fusiforme, el giro occipital medio, la ínsula anterior, el ventrículo lateral inferior y la sustancia gris de los lóbulos cerebelosos VIIIA y VIIIB en comparación con el grupo de control. Por el contrario, en relación con el grupo de control, el grupo de pacientes demostró volúmenes significativamente menores en la sustancia gris de los lóbulos cerebelosos IV, I-II y III, así como en las subregiones hipocampales de CA2-CA3, SR-SL-SM y el subículo.

Conclusión

Las malformaciones arteriovenosas que ocurren en el giro precentral y poscentral conducen a cambios volumétricos en estructuras distantes del sitio de la malformación, incluyendo el cerebro, el hipocampo e incluso el cerebelo. Por lo tanto, las malformaciones arteriovenosas pueden influir en los volúmenes de estructuras localizadas no solo dentro de su región cerebral inmediata, sino también en otras partes del cerebro y el cerebelo. Comprender estos cambios volumétricos puede ayudar a explicar los síntomas de los pacientes. Sin embargo, se requiere investigación adicional sobre si estos cambios volumétricos resultan del efecto de masa del nidus o se derivan de otra causa subyacente.

Palabras clave:
Hipocampo
Malformación arteriovenosa
Nidus
Volumen cerebral
Vol2Brain
Abstract
Objective

Arteriovenous malformations are known as arterial-venous shunts that connect nidus, the nourishing arteries, to draining veins. Although they are not very common in the brain, they are responsible for approximately 2% of all strokes. The volumetric changes in the surrounding brain tissues caused by cerebral arteriovenous malformations have not yet been reported.

Methods

To detect these volumetric changes, MR data were acquired from 38 controls and 25 unoperated patients with arteriovenous malformations in the precentral and postcentral gyrus. MR data were analyzed with vol2Brain, Ceres and HIPS pipelines. The niduses of these patients were resected by transsulcal microsurgical dissection.

Results

A comprehensive volumetric analysis encompassing 135 distinct brain, cerebellar, and hippocampal structures was conducted using the Vol2brain software. Comparison between the patient group and the control group revealed significant volumetric differences. Specifically, the patient group exhibited significantly larger volumes in the nucleus accumbens, fusiform gyrus, middle occipital gyrus, anterior insula, inferior lateral ventricle, and the gray matter of cerebellar lobules VIIIA and VIIIB compared with the control group. Conversely, relative to the control group, the patient group demonstrated significantly smaller volumes in the gray matter of cerebellar lobules IV, I-II, and III, as well as in the hippocampal subfields of CA2-CA3, SR-SL-SM, and the subiculum.

Conclusion

Arteriovenous malformations occurring in the precentral and postcentral gyrus lead to volumetric changes in structures distant from the site of the malformation, including the brain, hippocampus, and even the cerebellum. Therefore, arteriovenous malformations may influence the volumes of structures located not only within their immediate brain region but also in other parts of the cerebrum and cerebellum. Understanding these volumetric changes can aid in explaining patient symptoms. However, further research is required regarding whether these volumetric changes result from the mass effect of the nidus or stem from another underlying cause.

Keywords:
Hippocampus
Arteriovenous malformation
Nidus
Brain volume
Vol2Brain

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