External orbital angular dermoid cyst

Case contributed by Dr Amr Farouk


6 years old patient with left orbital superolateral corner lump present since 3 years

Patient Data

Age: 6 years old
Gender: Male

A bony defect is seen at the left lateral orbital wall is seen along the superior aspect of the zygomatico-sphenoid suture with a fairly defined dumbbell-shaped hypodense lesion seen traversing this bony defect showing intra-orbital extra-conal as well as extra-orbital components. The intra-orbital component is seen abutting the lateral rectus muscle at its orbital insertion with no significant displacement and extending along the orbital roof with a fatty component within. 

Case Discussion

Superficial angular dermoid is usually diagnosed early & grow slowly presenting as a painless subcutaneous mass along the upper outer quadrant or the lacrimal fossa.

It is seen centered upon the zygomaticofrontal suture with mixed content of fat & fluid attenuations.

CT picture of external orbital angular dermoid cyst

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Case information

rID: 54839
Published: 1st Aug 2017
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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