Table 1.

Data concerning characteristics and management of postoperative CSFL

Case no.	Sex/Age (years)	Location of surgery	Double‐layer sign	Cause	Dural resection	Intraoperative CSFL	Intraoperative treatment	Postoperative treatment	Healing time
1	Male/63	C4	+	Separation, tearing	No	Yes	Muscle + gelatin sponge + fibrin glue	Conventional treatment	5 days
2	Male/57	C5–6	+	Separation, injured by a dissector	No	Yes	Gelatin sponge + fibrin glue	Conventional treatment	6 days
3	Female/49	C5	−	Separation, tearing	No	Yes	Suturing + gelatin sponge + fibrin glue	Conventional treatment	4 days
4	Male/51	C4 + C5	−	Adhesions, injured by a dissector	No	Yes	Muscle + gelatin sponge + fibrin glue	Conventional treatment	6 days
5	Male/56	C4	−	Postoperative cough	Yes	No	Gelatin sponge + fibrin glue	Conventional treatment + reduce cough + repeated puncture + antibiotic infusion	3 weeks

Conventional treatment: Drainage, confined to bed, local pressure, oral acetazolamide and so on.