Long-term survival in patients with primary malignant brain tumors after postoperative home hydrogen inhalation: Three case reports

Figure 9 A series of brain magnetic resonance imaging scans after hydrogen intervention showed gradual tumor regression until disappearance. A and B: In November 2019, 9 months after combined hydrogen intervention, T1-weighted magnetic resonance imaging (MRI) revealed a 37 mm × 24 mm tumor in the left frontal lobe (orange arrow), accompanied by mild ventricular dilation and fluid accumulation; C and D: In May 2021, 8 months after hydrogen monotherapy, T1-weighted cranial MRI showed reduced tumor size compared with the previous; E and F: In July 2024, 46 months after hydrogen monotherapy, supratentorial ventricular system hydrocephalus was observed, with no obvious tumor signs on T1-weighted images (A, C, E: Axial section; B, D, F: Coronal section (provided by Cancer Hospital Affiliated to Sun Yat-sen University, Guangzhou, China).