Atypical haemorrhagic colloid cyst: 2 case reports surgical management and review of literature

Abstract

Highlights Only 15 cases of clinically diagnosed hemorrhagic colloid cysts were reported in the literature and 5 more cases on autopsy. The benefits of excellent visualization and minimally invasive access through the dilated ventricular system are offered by the endoscopic approach. Open microsurgical technique is the best choice for hemorrhagic colloid cysts.

Hemorrhagic Fourth Ventricle Colloid Cyst: A Report of an Unusual Presentation at an Uncommon Location

“…Importantly, these cysts usually do not suppress on FLAIR studies and demonstrate absence of diffusion restriction on diffusion-weighted imaging. 5,6,14 In our case, the signal intensity on T1 and T2 aligns with the literature. However, notable heterogeneity in signal intensity on T2-weighted images, accompanied by blooming artifacts on susceptibility-weighted imaging (SWI), corresponds to the confirmed cystic hemorrhage.…”

“…Other potential sites include diencephalic ependymoma, the invagination of the neuroepithelium within the ventricle, or the respiratory epithelium of endodermal origin. 5,10,11 These cysts account for about 15 to 20% of intraventricular masses and 0.5 to 1.0% of all primary brain tumors. 4,10,11 The utilization of CT and MRI has led to an increased identification of asymptomatic colloid cysts.…”

“…10 Common symptoms, often linked to heightened intracranial pressure in the third ventricular cysts, include headaches, memory impairments, and cognitive impairments. 5 8 10 Additional modes of presentation encompass dementia, disruptions in gait, and urinary incontinence due to chronic hydrocephalus. Colloid cysts can give rise to significant morbidity and, in some cases, even mortality.…”

“…2 On computed tomography (CT) scans, they appear homogeneously hyperdense, while on magnetic resonance imaging (MRI), they exhibit high T1 signal intensity and low T2 signal intensity. 5 Instances of acute hemorrhage occurring within colloid cysts are exceedingly uncommon and can manifest with sudden, severe symptoms or even lead to abrupt demise. 6 7 In this article, we present a remarkable case of a patient harboring an unconventional colloid cyst within the fourth ventricle and presenting with acute worsening of symptoms.…”

Hemorrhagic cavum vergae colloid cyst: A presentation of anterograde amnesia without hydrocephalus

“…Hemorrhagic colloid cysts are highly unusual, with <20 cases and five autopsy reports in the literature to date. [2] Each of these involved a cyst located within the roof of the third ventricle, where patients presented with symptoms of acute hydrocephalus. ese included memory deficits, headaches, and/or cognitive disturbances accompanied by ventriculomegaly.…”