Dermoid cyst by momen

Concise description on lipoma.

1. Dermoid cyst By Momen A li Khan

2. Definition It is a cyst lined by skin and deep to sk in

3. Classification Congenital Sequestration dermoid Tubolodermoid- thyroglossal cyst, anal dermoid Teratomatous dermoid Acquired Implantation dermoid

4. Composition Composition of dermoid cyst- opaque mixture of Epithelial debris Sweat Sebum Hair follicle

5. Sequestration dermoid Clinical feature Painless swelling arise in second or third decade of l ife. Example Dermoid cyst on centre of forehead Dermoid cyst on roof of nose Post auricular dermoid Dermoid cyst on lateral angle of eyeball

6. Implantation dermoid Due to minor trauma or prick ,skin implant into deep causes dermoid cyst. Clinical feature Painless slowly progressive swelling Common site Finger Toe Foot

7. T eratomatous dermoid „ In ovary: dermoid cyst „Testis : teratoma „ Mediastinum : mediastinal cyst „ Retroperitoneum : retroperitoneal cyst „ Postanal dermoid

8. Differential Diagnosis Sebaceous cyst Lipoma Fibroma Neurofibroma

9. Investigation X-ray of part both AP and lateral view CT scan of brain if dermoid in skull ECG RBS

10. Treatment Simple excision under local anesthesia General anesthesia require in some case

11. Complication Complications of dermoid cyst- „Infection Hemorrhage „Pressure effect on adjacent structure „Calcification „Rupture and surface ulceration