Table 1. CrC detected in CT head, neck and chest.

System	Complication	Number (n)
Head and neck	Brain metastases with significant perilesional oedema	40
	Cavernous sinus involvement	14
	Haemorrhage	11
	Perineural spread	8
	Airway compromise	8
	Osteoradionecrosis	8
	Cellulitis and retropharyngeal abscess	7
	Post RT laryngeal oedema	5
	Infarct	3
	RT induced sarcoma	1
Total		105
Thorax	Infection	62
	SVC obstruction	40
	Drug induced changes	31
	Spinal cord compression	24
	Aspiration	19
	Pericardial/pleural effusion	24
	Pulmonary haemorrhage	14
	Pulmonary embolism	13
	Pneumothorax	13
	Pulmonary oedema	13
	Bronchoesophageal fistula	6
	ATRA differentiation	3
	GVHD	2
	Fat embolism	1
Total		265

RT: Radiotherapy; SVC: Superior vena cava; ATRA: All-trans retinoic acid; GVHD: Graft versus host disease