Dermatology: Pathology Flashcards
Sun exposure has the greatest risk mid day, between ___-___
UVA:
UVB:
10-2
UVA: tanning
UVB: sunburn
Sunscreen application:
-Apply _______ before going outside
-Reapply every ___
20-30 mins
2 hours- not waterproof
Explain the ABCDE skin assessment
Asymmetry
Border irregularity
Color change/variation
Diameter (6mm or more)
Evolving in appearance
What is the most common causative factor of non-melanoma pre-cancerous/cancerous skin lesions?
Give some examples
Sun exposure
Basal & Squamous cell carcinoma
Actinic Keratosis
Explain Actinic Keratosis
Premalignant skin lesions
Impossible to distinguish between AK and squamous cell carcinoma- biopsy and treat
Basal Cell Carcinoma
Most common type of skin cancer
Least deadly, rarely metastasizes
Nodular, ulcer depression/crater in the middle
Treat with removal, laser, flurouracil
Squamous Cell Carcinoma
-Metastasis potential?
-Mouth/lip formation?
-Incidence increased by?
-Appearance?
-Treat?
Yes
from smoking
from immunosuppression
thin, scaly, red
removal, radiation, flurouracil, chemo if mets
Malignant Melanoma
-cause?
-Incidence?
-metastasize?
-component?
-advanced survival rate?
-unknown cause
-increasing incidence
-any organ possible
-genetic component
-5 year survival rate, <10%
How is melanoma diagnosed?
The tumor thickness is measured by?
Incisional biopsy
Breslow: mm depth
Clark level: degree of invasion
What is the most important prognostic factor at diagnosis for melanoma?
Tumor thickness
Describe an Atypical Nevus
Great than 5mm
Irregular borders
Various color shades
Increased melanoma risk
The following are examples of ______ skin infections…
Carbuncle
Cellulitis
Erysipelas
Folliculitis
Furuncle
Impetigo
Bacterial Skin Infections
The following are examples of _______ skin infections:
HSV 1 and 2
Herpes Zoster
Plantar warts
Verruca vulgaris
Viral skin infections
The following are examples of ____ skin infections:
-Candidiasis
Tinea Corporis
Tinea cruris
Tinea pedis
Tinea unguium
Fungal skin infections
Explain Steven Johnson’s Syndrome
What is the priority?
What kind of care?
Violent immune response 4-21 days after staring use of an offending drug
Stop offending drugs
Supportive care
List the SATAN acronym for the most common drug causes of Steven Johnson’s Syndrome
Sulfanomides
Allopurinol
Tetracyclines
Anticonvulsants
NSAIDS
The following are examples of _____ dermatologic problems:
Acne vulgaris
Psoriasis
Seborrheic keratosis
Acrochordons (skin tags)
Benign dermatologic problems
