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CCEB - MSK PATHOLOGY EXAM
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CCEB - MSK PATHOLOGY EXAMSeptic arthritis is the inflammation of a joint induced by an infection.
Most usually gonorrhoea
Pyogenic osteomyelitis and Pathogen - Answer Bacteria reach bone via three
methods.
Hematogenous
Neighbouring tissues
Traumatic (e.g., fractures).
Staph A
Tubercular Osteomyelitis - Answer Blood-borne tuberculosis, thoracic and lumbar
spine, destructive.
Pitt’s Disease
Necrotizing fasciitis is a serious infection caused by Group A Streptococcus
bacteria.
presents with red, puffy skin that is hot to the touch.
Gangrene is the death of tissue caused by a loss of blood flow, followed by
bacterial invasion.
, Cold, painful erosions of the skin
Ulceration occurs alongside atrophy.
The organism that causes gangrene is Clostridium perfringens.
Gangrene risk factors: ANSWER Trauma.
DM
atherosclerosis
Rhabdomyosarcoma - A malignant tumor of striated muscle.
Answer: Osteosarcoma is the most frequent primary malignant bone tumour.
The most prevalent place for osteosarcoma is the knee.
--Following the hip, proximal humerus, and lower skull/jaw.
osteosarcoma xray - ANSWER Divergent "sunburst" theory, Codman's perspective.
Moth-eaten and ill-defined margin.
Radiodensity: ivory (increased density in the medulla).
Osteoid Osteoma - Answer Radiolucent lesion in the cortex of the proximal femur,
nocturnal pain alleviated with aspirin
Smaller than 2 cm.
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