SAJJAD, W.; IKRAM, M. A.; KHAN, H. D.; ZAHID, A.; IJAZ, F.; MAHMOOD, H. H.; KHAN, R. Anatomical Variation in Sigmoid Sinus and Its Impact on Mastoid Exploration in Atticoantral Chronic Suppurative Otitis Media Surgery: A Prospective Study at Khyber Teaching Hospital, Peshawar: Sigmoid Sinus Variations and Their Impact on Mastoid Surgery in CSOM. Pakistan Journal of Health Sciences, Pakistan, v. 6, n. 11, p. 08–13, 2025. DOI: 10.54393/pjhs.v6i11.3384. Disponível em: http://thejas.com.pk/index.php/pjhs/article/view/3384. Acesso em: 3 dec. 2025.