Part 3a
Transcription
Part 3a
Papillomatous CCIN Diffuse CCIN Is a raised discrete lesion with surface corkscrew-like blood vessels Is uncommon and is characterized by indistinct conjunctival thickening Note: All three types may be associated with grey white hyperplastic epithelium that can extend into cornea Case MT- 38 Year old female CC: Red bump & ache on left eye x 4 mos and is slowly getting worse. General health is good & no history of cancer BVA: 20/20 OD, OS Pupils, IOPs, visual fields normal See slide Referral for excisional biopsy 1 Lab Report Atypical squamous proliferative lesion. In dysplastic areas changes approach squamous cell carcinoma in situ. No evidence of stromal invasion Lesion is called dysplastic if only partial thickness of epithelial layer is replaced by atypical cells & CIN if there is total replacement of the epithelial layer, basement membrane is intact Commonly Misdiagnosed as Chronic conjunctivitis, papilloma, ptyerguim, inflamed pinguecula Sometimes difficult or impossible to distinguish clinically Histopathological evaluation is critical If dysplastic cells breach the basement membrane, then this is invasive squamous cell carcinoma 2 Squamous Cell Carcinoma General characteristics Rare condition, in late life, which develops at the limbus in the intrapalpebral zone Signs Starts as a small fleshy, pink, gray nodule, becomes almond shaped as it extends around the limbus, large feeder vessels develop giving rise to the suspicion of malignancy, characterized by deep invasion of the stroma Treatment Excision & cryotherapy, Mitomycin C, enucleation Dyskeratosis General characteristics Due to a variety of chronic irritative factors, i.e. radiation and topical drug therapy Signs Dry white plaque on the surface of the globe Treatment Surgical removal if concern Hemangioma General characteristics Usually present at birth, but may appear up to 10 years; may enlarge with age; a cosmetic concern Orbital hemangiomas are usually in the superonasal orbit Maybe observed through the lid as bluish mass or be accompanied by red hemangioma of the skinstrawberry nevus Conjunctival Signs Appears as a mass of fine tortuous blood vessels, newly formed vessels, more often inner canthus or deep fornice, reddish to dark purplish tortuous vessel masses Cavernous with a broad base Capillary—Mass of fine tortuous blood vessels Treatment Surgical removal if cosmetic concern 3 Telangiectasia General characteristics Due to local irritation, systemic disease, inflammations, I.e. Acne Rosacae, vascular disease, collagen disease, idopathetic Signs Dilation of pre-existing vessels of conjunctiva; superficial, localized, dilated, or convoluted blood vessel (arteriole), saccular-like aneuryms or berry shaped 4