Ghon focus
Ghon focus (pronounced: /ɡɒn/)
The Ghon focus is a primary lesion, usually subpleural, often with involvement of the draining lymph nodes in the mediastinum. It is a characteristic radiologic manifestation of primary tuberculosis in children but is also seen in adults.
Etymology
The term is named after the Austrian pathologist Anton Ghon (1866–1936).
Definition
The Ghon focus is the primary lesion of tuberculosis in the lungs. It is a small, gray, granulomatous lesion, usually subpleural, often located in the mid to lower zones of the lung. It is often associated with the Ghon complex, which includes the Ghon focus and lymph node involvement.
Related Terms
- Ghon complex: The combination of the Ghon focus and lymph node involvement.
- Ranke complex: The healed Ghon complex, with calcification of both the Ghon focus and the lymph nodes.
- Primary tuberculosis: The initial infection with Mycobacterium tuberculosis, often asymptomatic or with mild symptoms.
- Post-primary tuberculosis: A reactivation of the disease, often in the apices of the lungs, which can be more severe and is more likely to be infectious.
See Also
External links
- Medical encyclopedia article on Ghon focus
- Wikipedia's article - Ghon focus
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