The posterior superior alveolar artery, infraorbital artery and posterior lateral nasal artery are three terminal branches of the maxillary artery that make up the blood supply of the maxillary sinus. Many different approaches, such as elevation of the head, electrocautery, endoscopic ligation and arterial embolization, exist for managing bleeding adjacent to the maxillary sinus. Among them, the three primary techniques include embolization, arterial ligation and electrocautery. However, due to its less traumatic nature, endoscopic ligation is usually preferred. Regarding embolization, it is a process whereby the blood supply to a tumour is cut off. It is considered the gold standard management for bleeding of paranasal lesions, and it is generally more beneficial for tumours with a single blood supply. Meanwhile, in arterial ligation, the blood supply is cut off by tying the artery. This approach is generally reserved for intractable bleeding from an unknown source and unmanageable via techniques such as posterior nasal packing. Arteries that are commonly ligated are the endonasal sphenopalatine artery, the intermaxillary artery and the external carotid artery. Lastly, regarding electrocautery, a heated instrument is used to perform coagulation. Common vascular lesions that are prone to bleeding in the area include but are not limited to juvenile angiofibroma, pyogenic granuloma and olfactory neuroblastoma.