An apparatus (150) for extracting a biopsy sample and for injecting a therapeutic material, comprising: (a) a cannula (160; 212; 300; 700; 800) having an internal light (166) and an opening (162) ; 301; 801) lateral distal; (b) a tissue extractor (805) having a distal portion capable of passing through said light, and advancing through said lateral distal opening to receive and retain a biopsy specimen; and (c) an injector (190) connectable to said cannula and operable to inject a material capable of flowing therethrough.Un aparato (150) para extraer una muestra de biopsia y para inyectar un material terapéutico, que comprende: (a) una cánula (160; 212; 300; 700; 800) que tiene una luz (166) interna y una abertura (162; 301; 801) distal lateral; (b) un extractor (805) de tejido que tiene una porción distal capaz de atravesar dicha luz, y avanzar a través de dicha abertura distal lateral para recibir y retener un espécimen de biopsia; y (c) un inyector (190) conectable a dicha cánula y operable para inyectar un material capaz de fluir a su través.