"Most common"

Question 1

most common soft tissue tumor of hand and wrist

Answer 1

ganglion cyst

most common around the scapholunate ligament junction

Question 2

most common cervical disc herniation site

Answer 2

between C5 and C6 is more affected in cervical spondylosis)

Question 3

most common sx of radiculopathy (L4-S3)

Answer 3

sciatica

Question 4

most common place for spondylolisthesis

Answer 4

L5-S1, less common L4-L5

also spondylolisthesis is relieved by sitting, where sciatica is relieved by walking or lying down/agg by sitting

Question 5

most common cause of lateral knee pain among athletes, and most common cause of lateral knee pain in runners

Answer 5

iliotibial band syndrome

Question 6

most common mass in the popliteal fossa

Answer 6

Baker’s cyst

Question 7

most common tears: medial or lateral meniscus? ACL or PCL?

Answer 7

medial, ACL

Question 8

most frequently dislocated joint in the body

Answer 8

shoulder, and 90% it is anteriorly displaced

Question 9

most common benign bone tumor (35%)

Answer 9

osteochondroma - usually on distal femur, proximal tibia, proximal humerus

Question 10

most common met for osteosarcoma

Answer 10

lung

malignant sarcoma affects: distal femur > proximal tibia > proximal humerus

Question 11

most common bug in osteomyelitis

Answer 11

staph aureus 90%

also strep pyogenes, H flu

Question 12

most common bug in septic arthritis

Answer 12

staph aureus in adults

Question 13

bug of lyme disease

Answer 13

borrelia burgdorferi (spirochete) transmitted by ixodes tick on white-tailed deer or white-footed mouse

Question 14

bug of secondary lymphedema

Answer 14

wucheria bancrofti, filariasis

filariasis is a disease caused by a mosquito-borne nematode infection of wucheria bancrofti. This is the #1 cause of lymphedema worldwide (radiation and surgery are the #1 cause of lymphedema in north america)

Question 15

most common bu for lymphangitis

Answer 15

strep pyogenes

Question 16

most common area of a neuroblastoma?

most common age? mean?

Answer 16

adrenal medulla
< 5 yo
18 months

Question 17

most common place of metastasis in nephroblastoma/Wilms tumor

Answer 17

lungs

Question 18

most common primary ocular malignancy in childhood

Answer 18

retinoblastoma

Question 19

most common cause of encephalitis?
most common viral CNS infection in AIDS?
most common cause of AIDS dementia?

Answer 19

viral
CMV
HIV

Question 20

most common transmissor of rabies

Answer 20

racoon

Question 21

most common auto-antibody mediated encephalitis

Answer 21

anti-NMDA receptor

Question 22

most common cause of acute otitis media

Answer 22

strep pneumonia

Question 23

most common viral exanthem in children < 2

Answer 23

roseola infantum

Question 24

most common cause of acute laryngotracheobronchitis (croup)

Answer 24

parainfluenza viruses (types 1 > 2 and 3)

also caused by RSV and adenovirus

Question 25

most common cause of acute epiglotitis

Answer 25

Hib (can also be due to vaccine, but this is rare)

Question 26

leading COD in infants < 12 mo | more prevalent in males or females?

Answer 26

SIDS, males 60-70%, also more prevalent in children placed in the prone position, most deaths occur between midnight at 8 am

Question 27

leading cause of lower respiratory tract infections in infants and young children

Answer 27

RSV - manifests as bronchiolitis

Question 28

most common adult atrial septal defect

Answer 28

patent foramen ovale opening between right and left atriums

Question 29

most common congenital heart disorder associated with bicuspid aorta and Turners syndrome

Answer 29

coarctation of the aorta

Question 30

most common cyanotic heart defect DX beyond infancy

Answer 30

TOF

Question 31

most common CHD in children

Answer 31

VSD

Question 32

most common COD in Hirschsprung disease

Answer 32

perforation from enterocolitis of dilated bowel

Question 33

most common chronic arthritis of children

Answer 33

juvenile RA/ juvenile idiopathic arthritis

Question 34

most common valve affected in endocarditis + drug-related infective endocarditis

Answer 34

mitral valve >> aortic > TC > pulmonic | tricuspid in drug users*

Question 35

most common bug in acute endocarditis? | subacute bacterial endocarditis?

Answer 35

staph aureus | strep viridans

Question 36

most common form of myocarditis

Answer 36

viral

Question 37

most common viral cause of acute pericarditis

Answer 37

coxsackie B virus