| Sıra | DOSYA ADI | Format | Bağlantı |
|---|---|---|---|
| 01. | Remove Removal Melanoma Tumor | pptx | Sunumu İndir |
Transkript
Tumors of eye
Orbital tumors Begin Dermoid cystMucoceleHemangiomaLymphangiomaMalignant rabdomyosarcoma
Benign tumors of the orbit can develop from infancy and grow rapidly or slowlyIt can be superficial and easily identifiable by external presentation, palpation and x – rays or CT scan Symptoms – proptosis can been seen, visual impairmentExamples – dermoid cysts, mucocele, hemangiomas, lymphangiomas, lacrimal tumors and neurofibromas
Mucocele – any dilatation with accumulation of mucusDermoid cyst – overgrowth of normal, noncancerous tissues comprised of skin, hair and fatLymphangiomas – malformations of the lymphatic systemHemangiomasTreatment – excision or resection (removal of a portion or all of an organ) and dissection.
Malignant tumors of the orbit Rhabdomyosarcoma (RMS) is the most common It is a type of sarcoma (cancer of connective tissues)Symptoms – sudden painless proptosis of one eye followed by lid swelling, conjunctival chemosis, and impairment of ocular motilityTreatment – surgery, radiation therapy and chemotherapy
Eye lid tumors Benign Nevus (plural - nevi)HemangiomasMiliaXanthelasmaMolluscum contagiousumMalignant Basel cell carcinomaSquamus cell carcinomaMalignant melanoma
Benign tumors of the eyelids Nevus – sharp circumscribed and chronic lesions of the skin or mucosaHemangiomas –tumor of the endothelial cells(which lines the blood vessels) that may be bright, superficial, strawberry red lesions or bluish and purplish deeper lesionsMilia – milk spot or oil seed - keratin filled cyst, small, white, slightly elevated cysts of the eyelidXanthelasma – yellowish, lipid deposits on both lids near the inner angle of the eyeMolluscum contagiosum – it’s a viral infection involves mucous membranes caused by poxvirus. The lesions are flesh colored
Treatment – Corticosteroid injection to the hemangiomaAstringent (silver nitrate, pottasium permanganate, zinc oxide)chemicals applied to the surface of molluscum lesions Surgical excisionElectrocautery – also known as thermal cautery in which direct current is passes through a electrode to the affected area and destruct the unwanted cells.
Malignant tumors of the eyelid Basal cell carcinoma – most common Painless nodule that may ulcerateLesion may invasive, spreads to the surrounding tissues, grows slowly but does not metastasizeUsually appear on the lower lid margin near the inner canthus with pearly white margin
Squamous cell carcinoma – less frequentResemble basal cell carcinomaGrows slowly and painlesslyUlcerate and invade the surrounding tissuesIt can metastasize to the regional lymph nodesMalignant melanoma –type of skin cancer which forms from melanocytes (pigment containing cells in the skin)can arise form neviSpreads to the surrounding tissues and metastasizes to other organs
Treatment Excision of these carcinomas followed by reconstruction with skin grafting
Conjunctiva – tumors BenignConjunctival nevusDermolipomaPapillomas MalignantConjunctival carcinomaMalignant melanoma
Benign tumors of the conjunctiva Conjunctival nevus Congenital, benign neoplasmIt is flat, slightly elevated, brown spot that becomes pigmentedDermolipoma- congenital tumor – smooth, rounded growth of fatty tissue in the conjunctiva near the lateral canthusPapillomas – soft irregular projections which appear on the lid margins Treatment – surgical excision
Malignant tumors of the conjunctiva Conjunctival carcinoma – gelatinous and whitish due to keratin formationThey grow gradually and there will be deep invasionMetastasis is rareMalignant melanoma – rare but arise from pre- existing nevusTreatment – surgical incision and excisionRadiation therapy, chemotherapy, cryotherapy – uses cryoprob to freezes and thus destroying the unwanted cells
Globe – tumors Malignant Retinoblastoma Occular melanoma
Malignant tumors of the globeRetinoblastoma – occurs in childhood and hereditaryInitial leukocoria or white pupil with peculiar light reflection and possible strabismusAssociated with Uveitis, glaucoma, hyphema (pooling of blood inside the anterior chamber of the eye), nystagmus, and periorbital cellulitisTreatment - enucleation
Ocular melanoma Rare, malignant choroidal tumorBlurred vision, change in eye colorMetastatic to liver, lung and breastTreatment – enucleation
Laser therapy, RadiotherapyEnucleation, Evisceration ,ExenterationIridectomy - Removal of the affected piece of the irisChoroidectomy - Removal of the choroid layer (the vascular tissue layer between the sclera and the retina)Iridocyclectomy - Removal of the iris plus the ciliary body muscle.Eyewall resection - Cutting into the eye to remove a tumor e.g. melanoma. This operation can be quite difficult to perform.ChemotherapyTreatment
Remove Removal Melanoma Tumor
Yıl : 2020
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