Questions: Flashcards

(29 cards)

1
Q

T/F? Sexual precocity is rare in females

A

False 30% of females with FD suffer from Albrights syndrome. Sexual precocity is rare in males

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2
Q

T/F? Expanding focal rib lesions are characteristic of FD

A

True. FD is the commonest cause of such lesions.

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3
Q

T/F? Re enchondroma of bone: Typically calcifies.

A

True

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4
Q

Re enchondroma of bone: Are found in Maffucci syndrome

A

True Maffucci syndrome is enchondroma with soft tissue haemangioma

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5
Q

Fluid fluid level on CT

A

GCT ABC and solitary bone cyst and telangiectatic osteosarcoma.

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6
Q

Lytic lesion in distall femur, does not reach the articular surface and has a fluid fluid level

A

ABC GCT abuts the articular surface

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7
Q

? Diagnosis Multiple NOF, cafe au lait spots , mental retardation, hypogonadism and cardiac malformation

A

Jaffe Campanacci Syndrome

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8
Q

Location of baker’s cyst

A

between semimembraneous and MEDIAL head of gastric

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9
Q

Discoid meniscus is a normal varian of the …… meniscus

A

lateral meniscus and is prone to tear.

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10
Q

Double PCL sign and intact ACL

A

Bucket handle tear

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11
Q

? diagnosis T2/STIR: celery stalk appearance T1: Drumstick

A

ACL mucoid degeneration Predisposes to ACL ganglion cyst

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12
Q

5 distinct manifestations of Psoriatic arthropathy:

A
  1. Oligoarthritis 2. Polyarthritis (usually DIP) 3. Symmetric type 4. Arthritis mutilans 5. Spondyloarthropathy
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13
Q

Pencil in cup deformity and telescoping of the joints

A

Psoriatic arthropathy that

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14
Q

Diagnosis? Wide bones with thick trabecula

A

Pagets

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15
Q

The typical radiographic appearance of this lesion is circumferential calcification with a lucent centre and a radiolucent cleft (string sign) that separates the lesion from the cortex of the adjacent bone.

Usually post traumatic

A

myositis ossificans

fluid fluid level due to previous haemorrhage.

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16
Q

Exess and deficiency of Vit D causes?

A

hypervitaminosis D is rare and leads to hypercalcaemia:

  • Facilitating calcium deposition in soft tissues, such as the arteries and kidneys.

hypovitaminosis D:

  • paediatric: rickets
  • adult: osteomalacia
17
Q

This has a typical appearance on plain radiographs with amorphous and multilobulated (“cloud-like”) calcification located in a periarticular distribution.

A

Tumoral calcinosis

Juxta-articular cystic lesions filled with calcium fluid

Defect in Phosphate met - Ca is normal

18
Q

There is focal areas of symptomatic perineural fibrosis around a plantar digital nerve of the foot. The condition is thought to be due to chronic entrapment of the nerve by the intermetatarsal ligament.

A

Morton Neuroma

The 3rd web-space (between 3rd and 4th metatarsal heads) is the most commonly affected site.

10% bilateral

19
Q

MRI findings of morton neuroma

sign associated with this condition

A

Dumbbell/ovoid-shaped lesion at a similar position to that described on ultrasound:

  • T1: typically low-to-iso signal
  • T2: typically low signal but can sometimes be intermediate in signal
  • T1 C+ (Gd): tends to show intense enhancement

A sonographic Mulder sign may be elicited with the probe.

T1 +Gd FS

20
Q

Diagnosis?

  • bone within a bone appearance
  • Erlenmeyer flask type deformity of the tubular bones
  • sandwich vertebrae: diffuse end plate sclerosis (peripheral bony sclerosis) and lucency of the centre of vertebral body
  • alternating radiolucent metaphyseal bands
A

Osteopetrosis

21
Q

Diagnosis? What are the typical findings?

A

Osteopetrosis

  1. bone within a bone appearance
  2. Erlenmeyer flask type deformity of the tubular bones
  3. sandwich vertebrae: diffuse end plate sclerosis (peripheral bony sclerosis) and lucency of the centre of vertebral body
  4. alternating radiolucent metaphyseal bands
22
Q

PVNS findings

A
  • Joint effusion
  • Ca is rare- Ca excludes PVNS
  • Low signal on all MR seq and BLOOMING
23
Q

The usual mechanism of this injury is falling onto outstretched hand in ulnar deviation

Or…

Direct blow to dorsum of the hand

A

Triquetrel fracture.

Scaphoid Fracture is more common in FOOSH and radial deviation

24
Q

35F. Pain in the hands and wrists. History of Rheumatic fever and SLE

A

Jaccoud arthropathy

  • non-erosive arthropathy
  • ulnar deviation of the 2-5th fingers with metacarpophalangeal (MCP) joint subluxation.
  • post-rheumatic fever.
  • in association with
    • systemic lupus erythematosus (SLE)
    • psoriatic arthritis,
    • inflammatory bowel disease and
    • malignancy.

It is thought to be related to ligamentous laxity.

25
What features would be suggestive of Fe deficiency anaemia 1. Narrowing of deploe 2. Hair on end skull 3. osteopenia of zygoma 4. osteosclerosis of sphenoid 5. biconcave vertebra
Hair on end skull ## Footnote widening of diploe OP in long bones
26
45F foot pain and difficulty walking and swelling along the medial malleolus and arch of foot. What tendon is most likely to have been injured?
Tibialis posterior
27
Assualt to face: unable to open his mouth. Severe bruising and flattening of the contour of his cheek. Diagnosis? 1. Zygomatic arch fracture 2. Le Fort I 3. Le Fort III 4. Coronoid process 5. Orbital blowout fracture
Zygomatic arch fracture
28
X ray shows loss of lamina dura of majority of teeth. What is the possible cause? 1. osteopetrois 2. hypoPTH 3. Scleroderma 4. Sickle cell 5. Myeloma
Scleroderma Other causes include: * Cushing * pagets * hyperPTH * OP * osteomalacia * leukaemia * mets * LCH
29
Which of the following lesions would appear as HOT on bone scan? 1. Osteopoikilosis 2. FCD 3. Acute fracture 4. FD 5. Haemangioma
Fibrous dysplasia Other causes: * Pagets * Brown tumour * ABC * Chondroblastoma * Ostoid osteoma