Page 1 of 1: radiology.

moujik · Credits: 917 My Scrapbook

wavy periosteal rx of ribs is seen in

a.TB
b.actinomycosis
c.hydatid cyst
d.histoplasmosis

neelanjana · Credits: 2096 My Scrapbook

Actinomycosis
Caused by actinomyces israeli, a gram+ pleomorphic anaerobic bacterium related to the morphology of a fungus and Mycobacterium—not acid fast

At one time, it was the most common pulmonary fungal disease

White or yellow “sulfur granules” in exudate are really mycelial clumps

Rod shaped form is found “normally” in dental caries, gingival margins, tonsillar crypts and GI tract

People with very poor dental hygiene and those that are immunosuppressed are predisposed

Affects mandibulofacial area, intestinal tract and lung, in that order

Mandibulofacial

Osteomyelitis of the mandible — with soft tissue mass – “lumpy jaw”

Intestinal

Resembles Crohn’s disease

May produce rupture of a hollow viscous, especially appendix

May produce fistula formation

Pulmonary

Consolidation which extends across fissure — peripheral and lower lobe

DDX for lung consolidation which extends through chest wall:

Blastomycosis

TB

Crytococcosis

Abscess

Empyema

Osteomyelitis of the rib --- wavy periosteal reaction, rarely rib destruction

Draining chest wall sinuses

If chronic, it results in severe fibrosis

moujik · Credits: 917 My Scrapbook

thanx again!

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