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Year : 2021  |  Volume : 69  |  Issue : 5  |  Page : 1492--1493

Intratumoral Hemorrhage in Vestibular Schwannoma: An Unusual but Alarming Clinical Entity

Sandesh Onkarappa, Raghavendra Nayak, Girish Menon 
 Department of Neurosurgery, Kasturba Medical College, Manipal, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India

Correspondence Address:
Raghavendra Nayak
Department of Neurosurgery, Kasturba Medical College, Manipal, MAHE, Manipal, Karnataka
India




How to cite this article:
Onkarappa S, Nayak R, Menon G. Intratumoral Hemorrhage in Vestibular Schwannoma: An Unusual but Alarming Clinical Entity.Neurol India 2021;69:1492-1493


How to cite this URL:
Onkarappa S, Nayak R, Menon G. Intratumoral Hemorrhage in Vestibular Schwannoma: An Unusual but Alarming Clinical Entity. Neurol India [serial online] 2021 [cited 2022 Jan 23 ];69:1492-1493
Available from: https://www.neurologyindia.com/text.asp?2021/69/5/1492/329608


Full Text



Presentation of brain tumors with intratumoral hemorrhage occurs in about 1.4–10% of cases; usually in metastatic brain tumors, aggressive high-grade gliomas, melanomas, and even in choroid plexus papilloma.[1] But the hemorrhage in the vestibular schwannoma is unusual and happens in less than 1% of cases.[2]

A 48-year-old lady with a 3-year history of left-side decreased hearing, presented to us with giddiness, vomiting, and facial asymmetry of two days. On examination, she had a left lower motor facial palsy (House-Brackmann grade 4) and severe left cerebellar signs. Magnetic resonance imaging of the brain was done which showed an extra-axial well-defined mass in the left cerebellar pontine cistern with a cone-like protrusion into the widened internal auditory canal. It was hypointense on T1 and heterogeneously hyperintense on both T2 and fluid-attenuated inversion recovery. There was a heterogeneous enhancement of gadolinium post-contrast. It showed an intense focus of blooming on susceptibility-weighted images indicating the intratumoral hemorrhage [Figure 1]. Our diagnosis was vestibular schwannoma with Intra tumoral hemorrhage (ITH) although the exophytic brainstem glioma and metastasis were also considered in the differential.{Figure 1}

We did a left retrosigmoid suboccipital craniotomy and complete excision of the tumor. Intraoperatively tumor had both organized and liquid clots. Histopathology was suggestive of schwannoma.

The mechanism of hemorrhage in the tumor is still poorly understood. The proliferation of thin-walled, dilated, and sinusoidal vasculature could be blamed for.[3] As the occurrence of ITH is rare, causes are always debatable. Likely risk factors include large tumor size (>2 cm), Cystic tumor, hypertension, physical exertion, anticoagulation therapy rapid tumor growth, and increased tumor vascularity.[4] A high correlation has been observed between hypertension and ITH.[5] Clinical outcome of ITH is substantially poor. Increased death rates (10%) and higher facial nerve weakness (31.3%) have been observed in Vestibular Shwannoma (VS) with ITH when compared to the VS without any hemorrhage (mortality: 0.2% and facial weakness: 6%).[3]

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

References

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5Yang X, Liu J, Zhang Y, Richard SA. Tumor-associated hemorrhage in patients with vestibular schwannoma. Acta Neurochir (Wien) 2018;160:1563-9.