Connective Tissue Flashcards
0
Q
What complement deficiencies can you see in lupus?
A
C2 and C4
1
Q
What antibody neonatal lupus is a positive indicator that they will not have a congenital heart block?
A
U1RNP
2
Q
What is the DDX for colloid bodies?
A
LP LPP Lichen nitidus Lichenoid keratosis Lichenoid drug Lichenoid GVH Lupus Poikiloderma atrophican vasculare
3
Q
Rectangle/square biopsy DDX?
A
- Morphea/Scleroderma
- Chronic graft-versus-host disease
- Chronic radiodermatitis
- Scar
- Normal skin of the back
- Connective tissue nevi
- Scleredema
- Scleromyxedema
4
Q
Mucin is present in what biopsies?
A
LE Dermatomyositis BCC GA Myxedema Scleredema
5
Q
Follicular plugging DDX?
A
•DLE •PRP •Lichen sclerosis •LPP •Acne •Atopic derm •Prurigo nodularis
6
Q
DDx superficial and deep perivascular and periadnexal lymphocytic infiltrate?
A
•6 L’s
- Lupus erythematosus
- PMLE Polymorphous light eruption
- Lues (2nd syphilis)
- Lymphocytic infiltrate of Jessner
- Lymphocytic lymphoma/ lymphocytoma cutis
- Lyme disease
7
Q
Lichenoid interface dermatitis DDX?
A
- LP
- BLK
- Lichenoid drug
- Lichenoid GVHD
- Lichenoid regression of melanoma
- Hypertrophic lupus
8
Q
Vacuolar interface dermatitis DDX?
A
- Lupus erythematosus
- Dermatomyositis
- GVHD
- Drug eruption/viral exanthem
- EM
- Fixed drug eruption
- Mycosis fungoides
- PLEVA
- PLC
