CORTEXT Pathology Flashcards
are malignant neoplasms of bone common or uncommon?
uncommon
commonest benign tumour of bone
osteochondroma
where do osteochondromas typically form?
epiphysis of long bones, particularly around the KNEE
do osteochondromas typically metastasise
no
associated symptoms with osteochondromas?
just local pain
where do enchondromas typically form?
small tubular bones of hands and feet
are enchondromas benign or malignant
benign
common sites of bone cysts?
talus
calcaneus
proximal humerus
femur
how are benign tumours usually treated
curettage
bone grafting
excisional biopsy
how does an aneursysmal bone cyst differ from a typical bone cyst?
contains chambers filled with blood and serum
name 2 locally aggressive benign tumours
giant cell tumour
aneurysmal bone cyst
where do giant cell tumours commonly arise?
knee
distal radius
which benign tumour commonly shows a “soap bubble” on x ray
giant cell tumour
which of the benign tumours involves a genetic mutation?
fibrous dysplasia
what does the genetic mutation cause in fibrous dysplasia?
lesions of fibrous tissue and immature bone
which is the most frequent site of fibrous dysplasia?
bones of head and neck
which benign tumour is common in adolescents and commonly appears on the proximal femur, long bones and vertebrae
osteoid osteoma
predominant clinical feature of osteoid osteoma
intense pain that is worse at night
what treatment would relieve the pain in osteoid osteoma
NSAIDs
what is a myeloma
tumour of plasma cells
clinical red flags of bone mets?
constant severe pain that is worse at night, weight loss, fatigue, loss of appetite
x ray features of malignant primary bone tumours
cortical destruction
periosteal reaction
new bone formation
extension into soft tissue