This disclosure includes apparatuses for detecting and/or destroying abnormal tissue, such as cancer tissue, and related methods. Some apparatuses include a device having an elongated body extending between a proximal end and a distal end, one or more detectors coupled to the distal end, each having a magnet configured to produce a magnetic field, and a magnetometer spaced apart from the magnet and configured to capture data indicative of a magnetic flux density. In some apparatuses, the magnet of a detector is configured to produce a constant magnetic field. In some apparatuses, the distal end of the elongated body is configured to be inserted into a target site on a patient.
