12. MSK Infection-3

Question 1

A 22 year old girl comes to her doctor due to complaints of a erythematous,painful lesions that are well demarcated with raised border on her left leg. What would you calcify this as?

A.  Impetigo
B. Skin abscess
C. Folliculitis 
D. Erysipelas 
E. Cellulitis 

RFA

Answer 1

Ans. D. Erysipelas- involves superficial dermis

A. Impetigo- vesicles with honey colored crust, Epidermis

B. Skin abscess- raised tender, inflamed nodule with central region of purulence, Deep dermis

C. Folliculitis- localized, inflamed papules contain a small amount of pus, hair follicle

E. Cellulitis- erythematous diffuse, flat lesion with irregular border, Deep dermis

Question 2

A 22 year old girl comes to her doctor due to complaints of a erythematous,painful lesions that are well demarcated with raised border on her left leg. Lab test are done showing a gram positive bacillus, that is encapsulated, catalase negative, non-motile and H2S positive. What is the exposure that is associated with the casual agent?

A. Handling raw fish
B. Dental procedures 
C. Splinters
D. Gun Shot wounds
E. Sheep herding

RFA

Answer 2

A. The patient has Erysipeloid caused as the labs show by Ersipelothrix rhusiopathiae which is associated with the handling of raw fish.

B. Dental procedures- Acinoymes iraeli- gram postive filamentrous bacteria

C. Splinter- Sporothrix schneckii- also know as rose gardner’s disease, a dimorphic fungus

D. Gun shot wounds- Clostridium perfinges gram postive bacillus but associated with necrosis

E. Sheep herding- would be Bacillus Anthrax also Sporthrix schencki