1893
Pyogenic Disease of the Brain and Spinal Cord, Meningitis, Abscess of the Brain, Infective Sinus Thrombosis, published in 1893, William Macewen advised draining the abscess and treating the underlying causative sinus infections 1).
1)
Pyogenic Infective Diseases of the Brain and Spinal Cord; Meningitis, Abscess of the Brain, Infective Sinus Thrombosis. Annals of Surgery. 1894;20(4):489-494.