Mai, 25, experienced a dull headache for about three months. Doctors diagnosed a 6x8 cm brain tumor and recommended surgery combined with radical adjuvant radiation therapy.

Binh, 58, presented with a mass in his lung hilum and a brain lesion. Doctors used endobronchial ultrasound to obtain tissue samples, confirming metastatic lung cancer to the brain.

A giant brain tumor, occupying nearly a quarter of her skull's volume, caused a 26-year-old girl prolonged headaches, which she attributed to stress and lack of sleep.

Mr. Hung, 30, experienced recurrent numbness, limb weakness, and speech difficulties that resolved spontaneously; doctors have now identified a vascular malformation causing brain hemorrhage.