<prompt> Retromammary abscess arises from:Tuberculous ribInfected hematomaChronic empyemaAll of the above  <response>: Ans. d All of the aboveRef. Internet Source Retromammary abscess is an extension from Breast abscess, Empyema Thoracis, Osteomyelitis of Ribs etc. No need to drain the Retromammary abscess. Conservative treatment is enough. 