Visible cavities in later stage tuberculosis; Ghon focuses are smaller.

A Ghon focus (also called a primary or Ranke complex) is a lesion caused by mycobacterium bacilli developed in the lung of a previously uninfected individual. It is named for Anton Ghon (1866-1936), a Czech pathologist. Tuberculosis Chest X-ray with TB cavity right upper lobe Figure 1. ... Tuberculosis (commonly shortened to TB) is an infection caused by the bacterium Mycobacterium tuberculosis, which most commonly affects the lungs (pulmonary TB) but can also affect the central nervous system (meningitis), lymphatic system, circulatory system (Miliary tuberculosis), genitourinary system, bones and joints. ... Binomial name Mycobacterium tuberculosis Zopf, 1883 Mycobacterium tuberculosis is the bacterium that causes most cases of tuberculosis. ... Orders Bacillales Lactobacillales The term bacilli (singular bacillus) is used to refer to any rod-shaped bacteria. ... 1866 (MDCCCLXVI) is a common year starting on Monday of the Gregorian calendar or a common year starting on Wednesday of the 12-day-slower Julian calendar. ... 1936 (MCMXXXVI) was a leap year starting on Wednesday (link will take you to calendar). ... Pathology (in ancient Greek pathos = feeling, pain, suffering and logos = discourse or treatise, i. ...

It is a small area of granulomatous inflammation, only detectable by chest X-ray if it calcifies or grows substantially (see tuberculosis radiology). Typically these will heal, but in some cases, especially in immunosuppressed patients, it will progress to miliary tuberculosis (so named due to the calcified granulomas resembling millet seeds on a chest X-ray). Chest X-ray A chest X-ray is a radiological film obtained by X-ray taken of the thorax which is used to diagnose problems with that area. ... Main article: Tuberculosis Radiology is used in the diagnosis of tuberculosis. ... Immunosuppression is the medical suppression of the immune system. ... Pearl millet in the field Ripe head of proso millet The millets are a group of small-seeded species of cereal crops, widely grown around the world for food and fodder. ...

The classical location for primary infection is in the upper lobe of the lung, with associated infection of surrounding lymph nodes. Lymph nodes are components of the lymphatic system. ...