Left MCA strokes are the most common type of strokes.  Prognostic questions regarding patient’s language recovery are come up very frequently in clinical settings. The impact of exact location of left MCA thrombus  on post-thrombectomy language outcome has not been well characterized.

160 patients with baseline aphasia were included (53.12% female, mean age [71.09 ± 13.78]). In this cohort, left MCA main trunk vs. distal M1 was associated with lower odds of ≥1 point language improvement at 24 h (adjusted OR 0.48, 95% CI 0.24–0.95, p= 0.0362). Female sex showed higher odds of improvement (OR 2.05, 1.01–4.26, p= 0.0469). Greater baseline Item-9 severity trended toward lower odds (OR 0.67, 0.42–1.05). Thrombolytic use was not associated with improvement (OR 1.05, 0.48–2.40). Model discrimination: AUC 0.65 (95% CI 0.56–0.74).

After thrombectomy, patients with distal left M1 thrombus demonstrated significantly greater early (24-hour) language improvement compared to patients with proximal left MCA occlusions following thrombectomy independent of age, baseline language severity, thrombolytic use, and reperfusion success. These findings support thrombus location as a practical predictor for early language recovery and may assist bedside prognostication after thrombectomy.