Fig. 2From: Changes in treatment strategy over time for arteriovenous malformation in a Japanese high-volume centerThe proportion of each treatment for patients with S–M grade II AVMs in the first and second periods of our study (a). The blue gridded area indicates the proportion of treatments including microsurgery (b), and the yellow gridded area indicates the proportion of treatments including stereotactic radiosurgery (c). Treatments including microsurgery decreased (p = 0.005) and treatments including stereotactic radiosurgery increased (p = 0.036) when comparing the first and second periods in our study. S: microsurgery, E: endovascular embolization, R: stereotactic radiosurgery, M: medical treatmentBack to article page