Cephalometry deals with measurement of body parts or radiological specimen. Sella turcica is an important anatomical structure located in the middle cranial fossa, housing the pituitary gland. Various shapes and sizes of the sellae turcica were reported. In this study, using computerized tomographic (CT) scans from a tertiary hospital, one hundred and seventy five (175) scans were analyzed using Radiant version 4.2 (Medixant 2017) for determination of sizes and shapes of the sella. Average dimensions from the study include: Length (12.4 mm), A-P diameter (14.1 mm), depth (9.6 mm) and transverse diameter (13.8 mm). Shapes were classified as being round (56.6%), oval (32%) and flat (11.4%). In another classification of shape variation, the findings are: Normal (68.6%), anterior oblique (9.1%), pyramidal (6.9%), double contour floor (5.7%), notching on the posterior wall (5.1%) and sella bridge (4.6%). Males tend to have higher sella sizes than females and there is statistical significant difference between them especially in respect to A-P diameter and length parameters. However, there is no sex predilection to shapes.

Background: The superior mesenteric artery may be the source of the common hepatic, gastroduodenal, accessory right hepatic, accessory pancreatic or splenic arteries. Objective: To present three cases of accessory right hepatic artery originating from the superior mesenteric artery in black African cadavers as found during routine cadaveric dissections. Materials and Method: The abdomens of 8 adult male black African cadavers were dissected according to the description and guidance by Romanes (1996). The superior mesenteric arteries, liver (especially the visceral surfaces), gall bladders, cystic ducts, portal veins and gastroduodenal arteries were exposed. Results: Three cadaveric cases of the accessory right hepatic arteries arising from the superior mesenteric arteries were observed. One of the cases was noticed to give a cystic branch. Conclusion: Since there are no Nigerian studies on the accessory right hepatic artery arising from the superior mesenteric artery, these reports might contribute useful data to the literature regarding the same.

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