dermoid cyst by momen
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Dermoid cyst ByMomen Ali Khan
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Definition
It is a cyst lined by skin and deep to skin
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ClassificationCongenitalSequestration dermoidTubolodermoid- thyroglossal cyst, anal dermoidTeratomatous dermoid
Acquired Implantation dermoid
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Composition
Composition of dermoid cyst- opaque mixture of Epithelial debris Sweat Sebum Hair follicle
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Sequestration dermoidClinical featurePainless swelling arise in second or third decade oflife.ExampleDermoid cyst on centre of foreheadDermoid cyst on roof of nosePost auricular dermoidDermoid cyst on lateral angle of eyeball
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Implantation dermoid
Due to minor trauma or prick ,skin implant into deep causes dermoid cyst.Clinical featurePainless slowly progressive swelling
Common siteFingerToeFoot
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Teratomatous dermoid�In ovary: dermoid cystTestis: teratoma�Mediastinum: mediastinal cyst�Retroperitoneum: retroperitoneal cyst�Postanal dermoid�
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Differential DiagnosisSebaceous cystLipomaFibromaNeurofibroma
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Investigation X-ray of part both AP and lateral view CT scan of brain if dermoid in skull ECG RBS
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Treatment
Simple excision under local anesthesiaGeneral anesthesia require in some case
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Complication Complications of dermoid cyst-
Infection�HemorrhagePressure effect on adjacent structure�Calcification�Rupture and surface ulceration�
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