A proctoscope, comprising a dilator body (2), having a longitudinal axis of extension (X) and internally hollow so as to define an internal volume (V), and at least one handle (5) applied to said dilator body (2), wherein the dilator body (2) has a distal portion (2a), having a substantially tubular shape and defining a zone of dilation of an internal cavity of a patient, and a proximal portion (2b) extending from the distal portion (2a) in a diverging fashion and defining a rear opening (4) for accessing said internal volume (V), wherein said distal portion (2a) of the dilator body (2) has at least one front opening (3) to enable access to the patient's mucosa or tissue from said internal volume (V), and wherein said diverging proximal portion (2b), or, alternatively, said at least one handle (5), has an anchorage means (6) for an adaptor body (100) suitable for placing a detection device (200) in a position such as to detect the internal volume of the proctoscope (1). Said dilator body (2) has, on said diverging proximal portion (2b), at least one auxiliary access opening (7) configured to enable the insertion of a means for operating in the internal volume (V) through said auxiliary opening (7) in a configuration wherein the proctoscope (1) is associated with said adaptor body (100)
