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Joseph Junewick, MD FACR
over 8 years ago
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Epidermoid Cyst

Case Detail

Anatomy: Neck-Face
Junewick
Joseph Junewick, MD FACR
Diagnostic Category: Neoplasia Benign
Created: over 7 years ago
Updated: over 7 years ago
Tags: PEDS
Modality/Study Types: US CT
Activities:
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History

13 month old female with scalp mass.


Case Images


Diagnosis

Epidermoid Cyst

Clinical Notes

Pathology – Thin walled cyst with smooth surface containing white-gray sebaceous material.

Findings

US – Hypoechoic, hypovascular mass with scalloping of outer table of skull.

CT – Hypodense mass with excavation of skull. No intracranial involvement.

Discussion

Epidermoids are not true tumors but rather dermal inclusion cysts lined by a stratified squamous epithelium and encircled by an outer connective tissue capsule. The external surface is typically smooth or lobulated with a pearly appearance. Epidermoids are slow growing benign lesions, occurring with equal frequency in males and females.

Reference

Lau TK, et al. Fetal Scalp Cysts: Challenge in Diagnosis and Counseling. J Ultrasound Med (2001); 20(2):175-177.



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