Pathology Terms Flashcards
Hyperkeratosis?
Increased thickness of the keratin layer
Parakeratosis?
Persistence of nuclei in the keratin layer -> usually seen in psoriasis or pre-malignant conditions (epidermis is proliferating too quickly)
Acanthosis?
Increased thickness of epithelium
Papillomatosis?
Irregular epithelial thickening
Spongiosis?
Intercellular oedema in the epidermis
Oedema between squames appears to increase prominence of intercellular prickles
If severe, vesicles filled by oedema fluid develop
Rete ridges?
Downward thickening of the epidermis between the dermal papillae
Acantholysis?
Lysis of intercellular adhesion sites
What are the 4 main classification of inflammatory skin disease?
Spongiotic - intraepidermal oedema
Psoriasiform - Elongation of rate ridges
Lichenoid - basal layer damage
Vesiculobullous - blistering
What condition is characterised by spongiotic - intraepidermal oedema?
Eczema
What is psoriasiform?
Elongation of rate ridges