PAssmed qs i forget Flashcards
Ankylosing spondylitis - x-ray findings?
Ankylosing spondylitis - x-ray findings: subchondral erosions, sclerosis
and squaring of lumbar vertebrae
Marfans: heart complications?
heart: dilation of the aortic sinuses (seen in 90%) which may lead to aortic aneurysm, aortic dissection, aortic regurgitation, mitral valve prolapse (75%),
lungs: repeated pneumothoraces
marfans: eye complications?
eyes: upwards lens dislocation (superotemporal ectopia lentis), blue sclera, myopia
Ehler-Danlos syndrome : complications?
elastic, fragile skin
joint hypermobility: recurrent joint dislocation
easy bruising
aortic regurgitation (mostly), mitral valve prolapse and aortic dissection
subarachnoid haemorrhage
angioid retinal streaks
Beighton score used to assess hypermobility
osteoporosis in a man?
check testosterone levels
hypergonadotropic (primary gonadal failure) or hypogonadotropic (secondary to a defect in the hypothalamic-pituitary axis) hypogonadism. The role of androgens on male bone metabolism is twofold. First, androgens stimulate bone formation during puberty. Second, androgens prevent bone resorption during and after puberty.
Patients who are allergic to aspirin may also react to?
sulfasalazine.
Cautions
G6PD deficiency
Sulfasalazine: adverse affects
Adverse effects
oligospermia
Stevens-Johnson syndrome
pneumonitis / lung fibrosis
myelosuppression, Heinz body anaemia, megaloblastic anaemia
may colour tears → stained contact lenses
Bone pain, tenderness and proximal myopathy (→ waddling gait) what do you sus?
osteopenia
SLE drug causes?
antibodies?
most common drug causes include procainamide and hydralazine. others:Less common causes isoniazid minocycline phenytoin
antibodies?:
skin (e.g. malar rash) and pulmonary involvement (e.g. pleurisy) are common
ANA positive in 100%, dsDNA negative
anti-histone antibodies are found in 80-90%
ANk spond As?
Apical fibrosis Anterior uveitis Aortic regurgitation Achilles tendonitis AV node block Amyloidosis
bloods:
low vitamin D levels
low calcium, phosphate (in around 30%)
raised alkaline phosphatase (in 95-100% of patients)
x-ray
translucent bands (Looser’s zones or pseudofractures)
osteomalacia
lytic lesion in the diaphysis of the right femur with an ‘onion skin’ appearance in a 15YO?
ewing’s sarcoma - pelvis and long bones
benign ‘overgrowth’ of bone, most typically occuring on the skull
associated with Gardner’s syndrome (a variant of familial adenomatous polyposis, FAP)
osteoma (begin)
20-40Y/O, occurs most frequently in the epiphyses of long bones
X-ray shows a ‘double bubble’ or ‘soap bubble’ appearance
giant cell tumour
where does osteocarcoma commonly occur?
what are the features of the X-ray?
metaphyseal region of long bones prior to epiphyseal closure, with 40% occuring in the femur, 20% in the tibia, and 10% in the humerus
x-ray shows Codman triangle (from periosteal elevation) and ‘sunburst’ pattern
AF: retinablastoma
RF: pagets, radiotherapy