Tumour

Question 1

Sunburst pattern

Answer 1

Osteosarcoma

Question 2

Osteosarcoma treatment

Answer 2

Chemo + wide resection

Question 3

Osteid osteoma size

Answer 3

<1cm, if larger it´s called osteoblastom
Often cortical, medullary or subperiosteal compare to osteoblastoma medullary

Nidus, pain relieved by aspirin

Often lytic lesion rather than nidus + reactive sclerotic rim

Question 4

Mafuccis syndrome

Answer 4

Vascular disease +
Olliere disease (aka
Multiple enchondromatosis)

Malign transformation prox extremity in both

Question 5

Osteochondroma grows from

Answer 5

Physis, ex after trauma

Surgery when symtomatic

Question 6

SCC high risk lesions

Answer 6

Greater than 2cm (T2
2mm or more depth or Clark 4
Rapid growth
low differentiation
Perineural invasion

6mm margin + too fascia or subcutaneous fat (otherwise 4mm or curre/kryo

Question 7

Clark end Breslow

Answer 7

MM uses Breslow
Tis - in situ, T1 1mm, T2 2mm, T3 4mm, T4<

Clark for SCC

Question 8

MM excision margin

Answer 8

In situ - 2-5mm
T1<1mm - 1cm
T2 (1-2mm) - 1-2cm
T3 (2-4mm) - 2-3cm
T4 (>4mm) - 3cm

Question 9

Merkel cell carcinoma treatment

Answer 9

Surgical excision somteimes amp + reg lymphadenectomy + postop irradiation+ chemo

Question 10

Other word for Schwannoma

Answer 10

Neurilemmoma

Question 11

GCT investigation treatment

Answer 11

CT Chest total body scan + MRI for soft tissue
If curretage adjuvant therapy
Often amputation if not distal radius
Wide resection in distal radius
Observe recurrense + metastasis for 10y

Question 12

Answer 12

Chondrosarcoma
Derives fr enchondroma or osteochondroma often >60y
Often P1 och MC - slowly growing
Radiography: lysis, calcifications, porly defined borders

Can expand into soft tissue, differentiates fr enchondroma

Question 13

Answer 13

Osteoblastoma
Benign - larger than osteoid osteom, lytic lesion