Neck and mediastinal hematoma caused by a foreign body in the esophagus with diagnostic difficulties: A case report

Figure 1 Presence of a massive hematoma in the neck and upper mediastinum, constricting the trachea.

Figure 2 The foreign body appeared as black shadow, with a diameter of 2. 5 cm, in the upper esophagus, with sharp-pointed ends. A pin high-density shadow can be vaguely seen.

Figure 3 The foreign body in the esophagus was a small crab (2 cm × 3 cm), with sharp ends (incomplete, left tip was broken).