| open tuberculosis | Pulmonary tuberculosis, tuberculous ulceration, or other form in which the tubercle bacilli are present in the excretions or secretions; in the lung, usually the result of cavity formation. (05 Mar 2000) |
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| open wound | A wound in which the tissues are exposed to the air. (05 Mar 2000) |
| fractures, open | Fractures in which there is an external wound communicating with the break of the bone. (12 Dec 1998) |