A forward viewing flexible echo endoscope comprises a flexible tubular insertion portion for insertion into human body for observation/treatment of a site (7"). The flexible insertion portion has at its distal tip close to the treatment/observation site (7") at least an ultrasonic transducer probe (3) and also LEDs (4) for illumination of target area (7"). The LEDs (4) are mounted on specially designed PCBs having heat sink characteristics. The tip has a treatment tool channel (5) for insertion of treatment tools (7) to access the target area (7"). An elevator mechanism (6) is disposed at the distal tip, such that the treatment tool channel (5) runs close to it, whereby maneuvering the treatment tools (7) over a wide range is ensured, so as to pin point and target the treatment/observation site (7") with precision and safety. FIG 1b