We report a rare case of a foreign body reaching the neck following a stab wound in the oral floor. An 11-month-old infant stabbed the oral floor of his mouth with a pencil when he fell down from a bed. Under general anesthesia, we extirpated the object without severe postoperative complications. Chest X-ray films and computed tomography were useful for confirming the location of the tip of the pencil. The length of the pencil according to his mother differed from that from that on the images. This case suggested that information from the preoperative images was important for us.
