1. Dermoid and Epidermoid Cysts
Raymond G Buick
Paediatric Surgeon
Birmingham UK
December 2008

2. Dermoid Cysts
• Sites
– Ext angle eye
– Nasal bridge
– Submental
– Sternal

3. Dermoid Cysts
External Angular Dermoid
Do not shave eyebrow
Make incision in eyebrow

4. Dermoid Cysts
• Midline Dermoids
• CT or MRI before surgery
• Intracranial extension is found in
approximately 36% of midline
dermoids.
• Anterior meningocele

5. Sebaceous (Epidermoid) Cysts
• Sebaceous (Epidermoid) Cysts
• Synonyms: epidermal cysts and epidermoid cysts
• A harmless cyst, especially on the scalp or face,
containing the fatty secretion of a sebaceous gland
• The term sebaceous cyst is a misnomer as these cysts
are not of sebaceous origin.
Analysis of the pattern of lipids has shown that they
do not originate from the sebaceous glands but from
proliferation of epidermal cells within the dermis.1

6. Epidermoid and Dermoid Cysts
Thanks to
• bms.brown.edu/.../Skin/DermoidCystEyebrow.jpg
• www.facesplus.com/Pediatric_photos/dermoid_1a.jpg
• http://www.choa.org/images/illustrations/derm.jpe
• http://www.nature.com/eye/journal/v19/n2/thumbs/6701473f1th.jpg
• http://www.vin.com/Images/Proceedings/WSAVA2002/Aor_125.jpg
• http://www.ctonlineclinic.com/index.php5?action=minorops

7. Epidermoid and Dermoid Cysts
Thanks to
• bms.brown.edu/.../Skin/DermoidCystEyebrow.jpg
• www.facesplus.com/Pediatric_photos/dermoid_1a.jpg
• http://www.choa.org/images/illustrations/derm.jpe
• http://www.nature.com/eye/journal/v19/n2/thumbs/6701473f1th.jpg
• http://www.vin.com/Images/Proceedings/WSAVA2002/Aor_125.jpg
• http://www.ctonlineclinic.com/index.php5?action=minorops