26 dx

Question 1

osteoporosis

Answer 1

DEXA , or quantitative CT measure bone density. NO LABS for dx.

Question 2

Pagets dis (osteitis deformans)

Answer 2

o Radiographic findings.
o Enlarged bone w thick, coarsened cortices and cancellous bone.
o Active dz: wedge shaped lytic leading edge progressing along the bone 1cm/yr.
o ↑ serum ALK phos.
o Normal calcium, phosphorous.

Question 3

pyogenic osteomyelitis

Answer 3

o Lytic bone lesion surrounded by sclerosis on radiograph.
o Some untreated cases may have (+) blood culture.
o Pathogen ID requires biopsy & bone cultures.

Question 4

silver stain –> see spirochete

Answer 4

Skeletal Syphilis (congenital)