Infra clavicular lesion of tuberculosis is known as ?: (A) Assman's focus, (B) Puhl's focus, (C) Simmon's focus, (D) Ghon's focus
Answer is A. Ans. is 'a' i.e., Assman's focus Assman's focus The initial lesion in secondary tuberculosis at the apex of lung (infraclavicular) without any lymph node involvement is called Assman's focus.