Path

Question 1

epiphyseal bone tumors

Answer 1

chondroblastoma

giant cell

Question 2

metaphyseal -centered in the cortex

Answer 2

Non-ossifyin fibroma

osteoid osteoma

Question 3

diaphyseal - intrameduallry

Answer 3

ewings sarcoma
lymphoma ,myeloma
fibrous dysplasia
endochondroma

Question 4

cortical diaphyseal ltumors

Answer 4

adamantinoma

osteoid osteoma

Question 5

xray- benign and non growing lesions are well circumscribed and show what and provake focal

Answer 5

slerotic rim…. coritcal thickening

Question 6

really fast growing lesions lack sclerotic rims but may show

Answer 6

cortical expansion

Question 7

cloud like

Answer 7

osteoid

Question 8

focal stippled or flocculent densities or rings or arcs of calcifications

Answer 8

chondroid

Question 9

defect of epiphyseal plate

Answer 9

osteochondroma

Question 10

pain relieved by aspirin - bc it produces prostaglandins ( night time)

Answer 10

osteoid osteoma

Question 11

radiolucent focal (nidus) surrounded by dense reactive periosteal bone

Answer 11

osteoid osteoma

Question 12

thin interconnected spicules of osteoid and woven bone rimmed by osteoblasts

Answer 12

osteoid osteoma

Question 13

looks likes a osteoid osteoma

Answer 13

osteoblastoma

Question 14

how to differentiate osteoblastoma, osteoid osteoma and osteosarcoma

Answer 14

malignant osteoid : lace like pattern, crazy arranged trabeculae or woven bone and highly pleomorphic

Question 15

olliers disease

Answer 15

enchondroma -> can transform to chondosarcoma - 20-30%

Question 16

marfucci syndrome

Answer 16

multiple enchondromas with hemangiomas -> 100%

Question 17

seen in the fingers

Answer 17

enchondroma

Question 18

irregular circumscribed, radiolucent epiphyseal lesion surrounded by reactive bone sclerosis

Answer 18

chondroblastoma

Question 19

chicken wite calficiation

Answer 19

chondroblastoma

Question 20

epiphyseal tumor that occurs before the growth plates close ( 10-20) can recur

Answer 20

chondroblastoma

Question 21

jaffe-campanacci syndrome

Answer 21

multiple non-ossifying fibromas and cutaneous cafe au lait spots

Question 22

in diaphysis and involves lateral portion of the bone

Answer 22

BOF

Question 23

Mccune- albright syndrome

Answer 23

Fibrous dyplasia, cafe au lait, precocious puberty

Question 24

mazabrauds syndrome

Answer 24

fibrous dysplasia in close proximity to soft tissue myxomas

Question 25

inability to make mature lamellar bone

Answer 25

fibrous dysplasia

Question 26

thin wavey spicules of woven bone - chinese letters , lack of osteoblastic rimming or osteoclastic activity, bland fibrous background

Answer 26

fibrous dysplasia

Question 27

herringbone pattern

Answer 27

fibrosarcoma

Question 28

blue cell tumor

Answer 28

PNET- Ewings

Question 29

onion skin

Answer 29

ewings

Question 30

storiform pattern -benign

Answer 30

benign fibrohistiocytoma

Question 31

storiform pattern and honeycomb pattern of infiltration into surrounding adipose

Answer 31

dermatofibrosarcoma protuberans

Question 32

most common sarcoma of adults

Answer 32

malignant fibrohistiocytoma -

Question 33

cigar shaped nuclei

Answer 33

leiomyoma