Work

Serial CT Imaging in a Male Child at Different Ages Demonstrating the Three Types of External Occipital Protuberance

Year: 2026

Type: article

Abstract: The external occipital protuberance (EOP) is a prominent bony elevation located in the posterior midline of the outer surface of the occipital bone, which can be classified into three types based on morphology. Herein, we present the case of a male child who showed all three types at different life stages. A male pediatric patient born in Beijing, China, in 2008 underwent cranial CT examinations at ages 8, 12, and 16 years for different clinical indications. Volume rendered (VR) postprocessed images revealed a dynamic evolutionary process of the EOP morphology, sequentially presenting as the smooth (Type I), wave-peak (Type II), and spine-like (Type III) types. We believe this is the first reported case in which a single patient fully exhibited all three types of EOP.

Source: Case Reports in Orthopedics

DOI: 10.1155/cro/8604013

Authors: Kai-min Sun, Xue-feng Sun

Institution: Capital Medical University

Language: English

Topic: Spinal Dysraphism and Malformations

Subfield: Clinical Neurology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $790