Reasonable Hypothesis SOP [1] | 43 of 2023 |
Balance of Probabilities SOP [2] | 44 of 2023 |
SOP Bulletin 236 [3]
ICD-10-AM Code: Q78.6
This is a genetic disorder of the bone manifesting in multiple benign cartilage topped bone tumours arising from the growth plates.
This diagnosis is based on clinical findings and imaging of the bone with MRI [magnetic resonance imaging], CT [computerised axial tomogram], or plain x-rays. Histology may be obtained.
The relevant medical specialist is an orthopaedic surgeon.
# All non-SOP
The genetic abnormality is present from birth. The osteochondromas develop before adulthood (before bone growth ceases). They are mostly asymptomatic but may cause pain, disfigurement or compression of adjacent structures. They are most frequently located in the long bones and particularly around the knee.
The only SOP factor is for inability to obtain appropriate clinical management.
Lesions cease to grow when the bone growth-plates close in early adulthood. Mangement involves observation and surgical excision for troublesome lesions. Malignant transformation to chondrosarcoma occurs rarely. This would be onset of a new condition rather than worsening of osteochondromatosis.
Links
[1] http://www.rma.gov.au/assets/SOP/2023/8e46f880b8/043.pdf
[2] http://www.rma.gov.au/assets/SOP/2023/8f43117e2e/044.pdf
[3] https://clik.dva.gov.au/system/files/media/SOP%20Bulletin%20236.pdf