A cutting tool includes a rotatable cutter arranged for rotation inside a hollow tube. The rotatable cutter has blades at a distal end-face thereof. Each blade has first and second cutting edges. The hollow tube includes distally-protruding scissor members in one-to-one correspondence with the blades. Each scissor member is formed with first and second inwardly facing cutting edges that face the first and second cutting edges of the rotatable cutter.