252 p.199

Question 1

a malignant, small round blue cell

tumor of the bone is a:

Answer 1

Ewing sarcoma

Question 2

Ewing sarcoma CxFx

Answer 2

pain and swelling, usually involving the midshaft of long bones, flat bones of the ribs and pelvis.

Constitutional symptoms or signs, such as fever, fatigue, weight loss, or anemia

Question 3

Ewing sarcoma Radiograph studies show:

Answer 3

typical features of multiple

layers of periosteum around the tumor site described as “onion-skinning” pattern

Question 4

Osteosarcoma radiographs typically show a ________ pattern

Answer 4

sunburst.

soft tissue mass with radial calcifications

Question 5

On plain radiographs, osteoid osteoma appears as

Answer 5

a small, round lucency (nidus) with a sclerotic margin.

Question 6

Osteoid osteoma is a benign bone-forming tumor, which has _____________ as its most common site.

Answer 6

the proximal femur

Question 7

On plain radiographs, chondroblastomas appear as

Answer 7

small, well-defined lesions with a sclerotic border

that may cross the physis (growth plate).

Question 8

On plain radiographs, nonossifying fibromas appear

as

Answer 8

small, well-defined, eccentric, expansile, lytic lesions located in the metaphysis with scalloped sclerotic border

with M of fibroMa and methaphysis

Question 9

Adenovirus infections commonly affect children between ___ years of age and besides respiratory infection it is associated with the development of_________________

Answer 9

1-3

bronchiolitis obliterans.

Question 10

this lesions can be found on histo-pathology of bronchiolitis obliterans.

Answer 10

ingrowth of fibromyxoid granulation tissue (polyploid plug of fibrotic tissue) into the airway lumen, resulting in partial or complete obstruction

Question 11

Systemic dissemination with nodules consisting of central caseating necrosis would be seen in

Answer 11

miliary tuberculosis.

Question 12

This child has elevated direct bilirubin, ultrasonography shows a shrunken gall bladder, and
biopsy reveals portal fibrosis and bile duct proliferation, which all point to a diagnosis of

Answer 12

biliary atresia

Question 13

biliary atresia. Once the diagnosis is confirmed with biopsy, the most appropriate initial treatment
is a ________ procedure. That consists in ________

Answer 13

Kasai .
a Roux-en-Y
hepatoportojejunostomy

Question 14

the definitive treatment of biliary atresia

in one third of biliary atresia patients is:

Answer 14

Liver transplantation.
But the Kasai procedure is usually done as the initial
treatment to allow biliary drainage.

Question 15

There’s less community acquired

Staphylococcus aureus resistance to these drugs:

Answer 15

clindamycin and trimethroprim-sulfamethoxazole

Question 16

this drug is indicated in cellulitis caused by Pasteurela multocida after a dog bite.

Answer 16

Amoxicillin-clavulanate

Question 17

For topical medications, ___is the most effective with efficacy considered equivalent to oral systemic antibiotics. There’s much resistance against
topical ____.
The first one is also more effective than _____.

Answer 17

mupirocin

neomycin

bacitracin.