Aims: Sphenoid sinus is one of the most inaccessible paranasal sinus, and is closely correlated to many vascular and neural structures. Anatomic variation of the sphenoid sinus can complicate surgery in this area. The aim of the present investigation was to define the sphenoid sinus variations and the relevant structures using cone-beam computed tomography (CBCT). Methods: This cross-sectiona...

Heterotaxy syndrome or situs ambiguous is a rare congenital disease in which the pattern of anatomical organization of the thoraco-abdominal visceral and vascular structures is not arranged in normal position. Patients with heterotaxy syndrome represent a wide range of anatomical variations including thoraco-abdominal structures. Here we report a rare case of asymptomatic heterotaxy syndrome in...

dental anatomical variations play a significant role in the diagnosis and a successful treatment outcome in endodontics. it is essential for the clinician to have a clear picture and understanding of the pulpal anatomy and its variations. in a mandibular second premolar, it is rare to find extra roots and canals. the aim of the present article is to report a case about the successful diagnosis,...