Simon focus

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A Simon focus is a tuberculosis (TB) nodule that can form in the apex of the lung when a primary TB infection elsewhere in the body spreads to the lung apex via the bloodstream.[1] Simon focus nodules are often calcified.[1]

References [edit]

  1. ^ a b Leung, AN (February 1999). "Pulmonary tuberculosis: the essentials.". Radiology 210 (2): 307–22. PMID 10207408. 
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