"Most cases are caused by Mycobacterium tuberculosis with non-tuberculosis mycobacterial infections very rare although increased in the settings of AIDS 3."
"Brodie abscess 2"
"Patients may present with a painful "cold abscess" with a localised mass/swelling +/- draining sinus with erythema or warmth; a low-grade fever may be present 2,4."
"There is often a delay between presentation and diagnosis, with a median time to diagnosis reported as 26.4 months 4."