Test 76: Derm Flashcards
Hansen disease infects what organs
skin and nerves
Infection of Hansen disease can be associated with contact with what
Armadillo
Difference b/w Tuberculoid leprosy and Lepromatous leprosy
Tuberculoid: Th1 immune
Lepromatous: Th2, lethal
Merocrine glands release what
watery security product via exocytosis with no loss of cell membrane
Apocine glands secrete
membrane-bound vesicles containing the secretory product
Holocrine galnds release
entire content of cells via cell lysis
What type of glands are involved with acne
Sebaceous gland which is a type of holocrine gland
Exposure to what rays causes photoaging
UVA
What happens in photo aging of skin
- epidermal atrophy
- flattening rete ridges
- decrease collagen fibril production
- increase degradation of collagen and elastin in dermis
- increase cross-linking of collagen
Axillary lymph node dissection is a risk factor for the development of what?
Chronic lymphadema involving the ipsilateral arm
- predisposes to angiosarcoma
Stewart-Treves Syndrome
angiosarcoma
What is Cherry Hemangioma
- Benign capillary hemangioma of elderly
- Does not regress
- frequency increases with age
What is strawberry hemangioma
- Benign capillary hemangioma of infancy
How does strawberry hemangioma present
- appears first few weeks of life
- grows rapidly
- regresses spontaneously by 5-8 years
4 year old caucasion male has recurrent skin and respiratory infections. Light skin and silvery hair. Horizontal nystagmus. Peripheral blood smear: giant cytoplasmic granules in neutrophils and monocytes
Chediak-Higashi syndrome
Wiskott-Aldrich syndrome
- Eczema, thrombocytopenia
- combined B and T disorder
Chediak-Higashi syndrome is a defect in what
neutrophil phagosome lysosome fusion