<prompt> Multiple sinuses and induration of chest wall is likely due toTuberculosisAtypical mycobacterial infectionHIV-AIDS patient with tuberculosisPulmonary actinomycosis  <response>: Pulmonary Actinomycosis. Lung and pleura get infected by direct spread from pharynx or by aspiration. Empyema develops. Later chest wall nodules appear leading to sinuses with discharge20. Fascio-cervical type is the most common Reference : SRBs Manual of Surgery, 6th Edition, page no 54. 