A case of chronic chest wall sinus.

A 17-year-old Muslim female presented with a swelling over the chest wall underneath her left breast. The swelling was aspirated and the cytology report of the aspirated material showed it to be of pyogenic origin. An incision and drainage was done, after which the patient presented with a non-healing discharging sinus at the same site. The exact nature of the disease was known only after excising the sinus tract with the affected rib.