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Inicio Revista Española de Patología Characterization of spinal hemangioblastomas in patients with and without von Hi...
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Vol. 57. Issue 3.
Pages 160-168 (July - September 2024)
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Vol. 57. Issue 3.
Pages 160-168 (July - September 2024)
Original
Characterization of spinal hemangioblastomas in patients with and without von Hippel-Lindau, and YAP expression
Caracterización de los hemangioblastomas espinales en los pacientes con y sin enfermedad de Von Hippel-Lindau y expresión de YAP
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Ana-Laura Calderón-Garcidueñasa,
Corresponding author
ana.calderon@innn.edu.mx

Corresponding author.
, Steven-Andrés Piña-Ballantynea, Eunice-Jazmín Espinosa-Aguilarb, Rebeca de Jesús Ramos-Sánchezc
a Neuropathology Department, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, 14269 Mexico City, Mexico
b Internal Medicine Department, Clínica-Hospital Mérida, 97314 Yucatan, Mexico
c Neuroradiology Department, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, 14269 Mexico City, Mexico
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Table 1. Clinical and radiological features of spinal hemangioblastomas.
Table 2. Immunohistochemistry score.
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Abstract
Introduction

Hemangioblastoma (HB) is a benign tumor of the central nervous system, associated with von Hippel-Lindau disease (VHL), or sporadic. The aim of this study was to compare and examine the clinical–pathological profile of patients with spinal hemangioblastoma and YAP expression.

Methods

A retrospective, descriptive, comparative study. All patients who underwent surgery for spinal HB between 2016 and 2023 were included. Clinical and radiological data were collected and analyzed. An immunohistochemistry panel including NeuN, neurofilaments (NF), and YAP-1, was performed.

Results

Nine patients were studied, six women and three men. Four patients had previously diagnosed VHL. The tumor location included: four cervical (44.44%), two thoracic (22.22%), two pontine with cervical extension (22.22%) and one patient with two lesions, one cervical and one thoracic (11.11%). Non-significant clinical differences were identified between VHL and sporadic patients. Imaging evidenced seven extramedullary and three intramedullary tumors.

Histologically, intra-tumoral and perivascular axonal tracts were observed in all cases. One third of the tumors (two with VHL and one sporadic) presented extramedullary hematopoiesis. Seven cases (77.8%) expressed nuclear YAP (three with VHL and four sporadic HBs). The surgical outcome was good and only one patient with VHL undergoing subtotal resection had recurrence.

Conclusions

Spinal HBs can be associated with VHL or be sporadic. To the best of our knowledge, this is the first study to describe YAP expression in HB. It is important to investigate the involvement of the Hippo pathway in HBs as a possible therapeutic target.

Keywords:
Spinal cord
Hemangioblastoma
von Hippel-Lindau disease
Sporadic
Yes-associated protein
Abbreviations:
HB
VHL
YAP
CNS
IHC
MRI
GTR
STR
Resumen
Introducción

El hemangioblastoma (HB) es un tumor benigno del sistema nervioso central, asociado con la enfermedad de von Hippel-Lindau (VHL), o esporádico. El objetivo de este estudio fue comparar y examinar el perfil clínico-patológico de los pacientes con hemangioblastomas espinales y la expresión de YAP.

Métodos

Estudio retrospectivo, descriptivo y comparativo. Se estudiaron los pacientes intervenidos quirúrgicamente por HB espinales entre los años 2016-2023. Se recolectó y analizó toda la información clínica y radiológica. Se aplicó un panel de inmunohistoquímica incluyendo NeuN, neurofilamentos y YAP-1.

Resultados

Se estudiaron 9 pacientes, 6 mujeres y 3 varones. Cuatro pacientes tenían VHL diagnosticado previamente. La localización tumoral incluyó: 4 cervicales (44,44%), 2 torácicos (22,22%), 2 pontinos con extensión cervical (22,22%) y una paciente con 2 lesiones, una cervical y una torácica (11,11%).

No se identificaron diferencias clínicas significativas entre los pacientes con VHL y esporádicos. Por imagen, fueron 7 tumores extramedulares y 3 intramedulares. Histológicamente, se observaron en todos los casos trayectos axonales intra-tumorales y perivasculares. Un tercio de los tumores (2 con VHL y uno esporádico) presentaron hematopoyesis extramedular. Siete casos (77,8%) expresaron YAP nuclear (3 con VHL y 4 HB esporádicos). El resultado quirúrgico fue bueno y solo un paciente con VHL sometido a resección subtotal tuvo recurrencia.

Conclusiones

Los HB espinales pueden estar asociados con la enfermedad de VHL o ser esporádicos. Hasta donde sabemos, este es el primer estudio que describe la expresión de YAP en el HB. Es importante investigar la participación de la vía de señalización Hippo en los HB como posible objetivo terapéutico.

Palabras clave:
Médula espinal
Hemangioblastoma
Enfermedad de von Hippel-Lindau
Esporádico
Yes-associated protein

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