Skin Lesions Flashcards
Mx of lesion with regular borders and appendages but increased in size
Excisions biopsy
Factor with greatest bearing on prognosis of BCC
Completeness of excision
BCC types
Nodular- most common, raised transclucent
Superficial- younger
Cystic- Clear or blue
Morpheoform- flat, lateral spread
Basosquamous -Atypical BCC
Basaloid histological BCC features with eosinophillic squamoid features of SCC
Biologically more aggressive and are more locally destructive
Features of BCC
Pearly
Raised edges
Ulcerated lesion
Sun exposed
Small itchy papule with coeliac
Dermatitis herpetiformis
Multiple irregular itchy lesions on abdo
Shave biopsy and cautery
Likely seborrhoea warts
Ulcerated area over medial malleolus- investigations for skin
Punch biopsy- as Marjolin ulcer can form from venous ulcers
PIlar cyst features
Pilar cysts may contain foul smelling cheesy material and are surrounded by the outer part of a hair follicle
Mx of infected sebaceous cyst
Incision and drainage with excision of cyst wall and packing
Lesion that has ulcerated and bleeds easily on contact- formed after trauma
Pyogenic granuloma
Overgrowth of blood vessels.
Seborrhoeic keratosis features
scaly, thick, greasy surface with scattered keratin plug
Dermatofibroma features
Solitary dermal nodules
Usually affect extremities of young adults
Lesions feel larger than they appear visually
Histologically they consist of proliferating fibroblasts merging with sparsely cellular dermal tissues
Can occur at site of trauma, pigmented
Dermoid cyst features
Embryological remnants and may be lined by hair and squamous epithelium
They are often located in the midline and may be linked to deeper structures resulting in a dumbbell shape to the lesion. Complete excision is required as they have a propensity to local recurrence if not excised.
Keratoacanthoma features
Rapid growth
Keratin core
Dome shame
Red
Become v large then come off and scar
SCC features
Scaly, crusty
May ulcerate
Telangiectases
