Skin - Histo Flashcards
1
Q
- Parakeratosis
- Suprapapillary thinning of epithelium
- Munro microabsecesses (collection of neutrophls in parakeratin)
- Elongation of thin Rete Ridges
- Inflammatory enlargement of dermal papillae
A
Psoriasis
2
Q
- Hyperkeratosis
- Dense, linear subepithelial infiltrate of T 8 lymphs
- Liquefaction of basal cells with focal apoptosis (Civatte bodies)
- Atrophy and saw toothing of rete ridges
A
Lichen Planus
3
Q
- Looks like Lichen Planus but with lymphocytic infiltrates extending to appendages
A
Discoid Lupus Erythematosis
4
Q
- Suprabasilar clefting of epithelium
- Loss of cohesion of keratinocytes causing acantholysis
A
Pemphigus
5
Q
- Subepithelial separation of epidermis from dermis
- No acantholysis
A
Bullous Pemphigoid
6
Q
- Tiny microabscesses of fibrin and neutrophils and eosinophils at the tips of dermal papillae which coalesce and produce subepidermal vesicles
- Immuno stain shows granular IgA deposits at tips of papillae
A
Dermatitis Herpetiformis
7
Q
- Like compound nevus but with large, coalescing theques of angular, hyperchromatic melanocytes
A
Dysplastic Nevus
8
Q
- Acanthotic epithelial projections covered by parakeratin
- Fibrovascular branched dermal cores
- Clusters of koilocytes in stratum spinosum representing viral inclusions
A
Verruca Vulgaris
9
Q
- Epithelium shows hyperparakeratosis and dysplasia
- Dermis hsows basophilic swelling and fragmentation of elastic fibers
- Loss of CT support causes vessel enlargment
A
Actinic Keratosis
10
Q
- Pseudoepitheliomatous hyperplasia (invasive epithelial growth with keratin pearls, resembling well differentiated SCCA)
A
Keratoacanthoma
11
Q
- Nodules of basal cells with peripheral palisading of hyperchromatic columnar cells
A
Basal Cell Carcinoma
