Derm Flashcards
(76 cards)
what is the most common subcutaneous neoplasm
lipoma
what is the most common tumor diagnosed in the US?
Basal cell carcinoma
biggest risk factor for BCC
UV exposure, during adolescence
Most common form of BCC
nodular form. pearly nodules with rolled edges. Rodent ulcer.
Treatment options for BCC
Moh’s surgery, Excisional surgery, Cautery and destruction or radiation
The definitive treatment for non-morpheform BCC lesions
Excision surgery with 4 mm margins and extension into subcutaneous tissue
treatment of choice for morpheaform, recurrent and infiltrative BCC
Mohs surgery
cautery and destruction for BCC
should never be for facial lesions and should only be used for patients that are somehow not candidates for excision or mohs
SCC that tend to be slower growing
develop from actinic keratosis
SCC that tend to be more aggressive
develop from Bowen disease, erythroplasia of Queyrat, chronic radiation dermatitis, scars and chronic ulcers. Also lesions that develop from normal appearing skin of the lips, genital and anal area.
SNLB
Sentinel lymph node biopsy- maps the first node basin that any disease would travel to if it were metastatic. Used for high risk SCC > 2mm or for MM > 1 cm Palpable lymph node is a contraindication for SNLB.
High risk tumors
> 2cm in diameter and/or involvement into the subcutateous tissue
Indications for Moh’s surgery
nail bed lesions, verrucous carcinomas, invasive lesions, poorly differentiated times and at sites where cosmesis is critical
increases risk of developing Malignant melanoma x2
10+ tanning bed sessions as an adolescent/young adult
most common subtype of Malignant Melanoma
Superficial Spreading (70%). Not found on the hands or feet
Skin lesion diameter that is concerning
> 6 mm
margin size for MM tumors
1 cm
margin size for MM tumors 1-2 mm
1-2 cm
margin size for MM tumors 2-4 mm
2 cm
margin size for MM tumors > 4mm
2 cm
margin size for MM in-situ tumor
0.5 cm
Factors affecting the severity of a burn
The degree of heath, length of time in contact with her, and what part of skin is affected
1st degree burn
partial thickness, epidermis only. Is dry, red and Painful.
treatment for a 1st degree burn
cool moist gauze, fans, and OTC topicals