Tumours-soft tissue and bone

Question 1

Tumor that does not transilluminate on MRI with decreased signal intensity on T1 and T2

Answer 1

GCT Giant Cell Tumor a.k.a. PVNS Pigmentet Villonodular Synovitis

Question 2

Recurrence rate of PVNS

Answer 2

5-50%, worse if deep into joint, solar plate och tendon engagement

Question 3

Estrogen sensitive tumor

Answer 3

Desmoid (can be treated with tamoxifen) - appears like chewing gum, infiltrating

Question 4

Night pain tumour

Answer 4

Osteid osteom

• does not grow, <1cm
• nidus
• NSAIDs good

Question 5

Lytic bone tumor with rim of sclerosis and sometimes internal calcification

Answer 5

Osteoblastoma

• relative to osteid esteem but larger 2-6cm
• not as intense pain and NSAIDs does not work as well
• rare cases malignifie
• local aggressive growth

Question 6

Enchondroma consists of?

Answer 6

Mature hyalin cartilage in medullary cavity

Question 7

Olliere disease is?

Answer 7

Multiple enchondromatosis

Question 8

Maffucis disease is?

Answer 8

Multiple enchondromatosis (like Olliere) + vascular anomalies. Both have risk for malignancy in pros extremity

Question 9

Two clinical test for glomus tumor

Answer 9

Love´s sign - exquisitely painful spot on palpation with a pinhead

Hildreth-s sign - reduction of pain on exsanguination with a torniquet

Question 10

Commonest neurofibramotosis type

Answer 10

NF1 a.k.a. von Recklinghausen

Question 11

ABCDE of skin tumors

Answer 11

Asssymetry
Border irregularity
Color variation
Diameter >6mm
Evolution

Question 12

Melanoma types

Answer 12

Superficial spreading 50-70%
Lentigo maligna
Acral lentiginous 2-8%
Nodular 10-20%
Amelanotic

Question 13

BCC types

Answer 13

Nodular 50-65%
Superficial 15-20%
Pigmented 5%
Sclerosing och morpheaform 1-3%