An enhanced flexibility auxiliary endoscope assembly for use with an endoscope, theassembly including at least one flexible elongate element and a flexible sleevehaving a first lumen for accommodating a distal portion of an endoscope capableof assuming at least a first curvature and a second lumen for accommodating theat least one flexible elongate element, the second lumen being configured toallow the at least one flexible elongate element to assume the at least first curvatureas well as at least a second curvature about the first curvature, thereby to enhanceflexibility of the auxiliary endoscope assembly.