Lhermitte–Duclos Disease Mimicking Cerebellopontine Angle Tumor: A Case Report

Lhermitte-Duclos disease (LDD) is dysplastic gangliocytoma of the cerebellum, which is rare, tends to grow slowly, usually has good prognosis, and wherein the cerebellar cortex becomes thick and the central white matter is not observed. On MRI of the brain, it has hyperintense and hypointense presentations on T2- and T1-weighted scans, respectively. It has nonhomogenous contrasting pattern on T1-contrast scans. LDD can be seen unilaterally or bilaterally in the cerebellum. When the disease is located at the cerebellopontine angle, it can be mistaken for the tumors located in this region. Recurrence can occur postoperatively, which is rare. The present case is a rare one because the tumor was located at the cerebellopontine angle and radiologically mimicked cerebellopontine angle tumors.

Frequency of Cerebellopontine Angle Tumors in Patient with Trigeminal Neuralgia

OBJECTIVES: To determine the frequency of cerebellopontine angle tumors in patients presented with trigeminal neuralgia. METHODOLOGY: This descriptive study was conducted in Neurosurgery Department, Hayatabad Medical Complex, Peshawar from 01-01-2016 to 31-12-2019. Patients with either gender and above 18 years of age diagnosed to be having trigeminal neuralgia and being symptomatic from a minimum duration of 03 months were included in the study. All the patients were subjected to a detailed history, thorough physical and neurological examinations and magnetic resonance imaging for the diagnosis of cerebellopontine angle tumors. RESULTS: The mean age group was 43 ± 2.37 years of which 37% were male and 62% were female patients, respectively. Cerebellopontine angle tumors were present in 3% of the patients. CONCLUSION: This study concluded that the frequency of cerebellopontine angle tumors was 3% among patients with trigeminal neuralgia.