Spontaneous tumor regression of intracranial solitary fibrous tumor originating from the medulla oblongata.

PMID: 

World Neurosurg. 2019 Oct ;130:400-404. Epub 2019 Jul 18. PMID: 31326640

Abstract Title: 

Spontaneous Tumor Regression of Intracranial Solitary Fibrous Tumor Originating From the Medulla Oblongata: A Case Report and Literature Review.

Abstract: 

BACKGROUND: Intracranial solitary fibrous tumor (SFT) is a rare occurrence and involvement of the fourth ventricle rarely reported. Because of its rarity, some characteristics of intracranial SFT seem to still remain uncertain.CASE DESCRIPTION: This study describes a very rare case of intracranial SFT in a 55-year-old woman who presented with gait disturbance and numbness in bilateral upper limbs from 3 months before visiting the hospital. Head magnetic resonance imaging scan revealed a homogeneously enhancing mass lesion located primarily in the fourth ventricle extending into the spinal canal and left foramen of Luschka, with a maximum diameter of 60 mm. Notably, this tumor presented spontaneous partial regression during waiting planned surgery without therapy, including chemotherapy and radiotherapy. This patient underwent a midline suboccipital craniotomy and resection of the tumor. Interestingly, there was no attachment to the dura mater of the posterior cranial fossa and the lesion was only attached to the dorsal part of the medulla oblongata.CONCLUSIONS: Although the location of the SFT in the fourth ventricle is rare, SFT should be considered as 1 of the differential diagnosis of fourth ventricle tumors. In addition, this case indicates that SFT in the fourth ventricle may regress on occasion spontaneously without a precisely known cause for this spontaneous partial regression.

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