Bone diseases: lab values

Question 1

Osteoporosis: calcium

Answer 1

normal

Question 2

Osteoporosis: phosphate

Answer 2

normal

Question 3

Osteoporosis: ALP

Answer 3

normal

Question 4

Osteoporosis: PTH

Answer 4

normsl

Question 5

Osteopetrosis: calcium

Answer 5

normal

decreased in severe disease

Question 6

Osteopetrosis: phosphate

Answer 6

normal

Question 7

Osteopetrosis: ALP

Answer 7

normal

Question 8

Osteopetrosis: PTH

Answer 8

normal

Question 9

Paget: calcium

Answer 9

normal

Question 10

Paget: phosphate

Answer 10

normal

Question 11

Paget: ALP

Answer 11

increased

Question 12

Paget: PTH

Answer 12

normal

Question 13

Osteomalacia/rickets: calcium

Answer 13

decreased

vit D deficiency -> less uptake

Question 14

Osteomalacia/rickets: phosphate

Answer 14

decreased

because PTH increases trying to elevate the calcium

Question 15

Osteomalacia/rickets: ALP

Answer 15

increased

osteoblasts become more active in response to increased bone resorption by osteoclasts

Question 16

Osteomalacia/rickets: PTH

Answer 16

increased, because calcium is low PTH increases in response

Question 17

Hypervitaminosis D: calcium

Answer 17

increased

Question 18

Hypervitaminosis D: phosphate

Answer 18

increased

Question 19

Hypervitaminosis D: ALP

Answer 19

normal

Question 20

Hypervitaminosis D: PTH

Answer 20

decreased (calcium is too high -> PTH decreased, because PTH normally increases calcium further)

Question 21

Osteitis fibrosis cystica (primary): calcium

Answer 21

increased

Question 22

Osteitis fibrosis cystica (primary): phosphate

Answer 22

decreased

Question 23

Osteitis fibrosis cystica (primary):
ALP

Answer 23

increased

Question 24

Osteitis fibrosis cystica (primary): PTH

Answer 24

increased

Question 25

Osteitis fibrosis cystica (secondary): calcium

Answer 25

decreased

Question 26

Osteitis fibrosis cystica (secondary): phosphate

Answer 26

increased

Question 27

Osteitis fibrosis cystica (secondary): ALP

Answer 27

increased

Question 28

Osteitis fibrosis cystica (secondary): PTH

Answer 28

increased

Question 29

Osteoporosis: what is it?

Answer 29

Less bone mass

Question 30

Osteopetrosis: what is it?

Answer 30

Dense, brittle bones (defective osteoclasts)

Question 31

Paget: what is it?

Answer 31

Abnormal bone architecture (mosaic)

Question 32

Osteomalacia/Rickets: what is it?

Answer 32

Soft bone, defective mineralization

Question 33

Hypervitaminosis D: cause?

Answer 33

Oversupplementation or granulomatous disease