Postoperative discal pseudocyst and its similarities to discal cyst: A case report

Table 2 Comparison of histological results between discal cyst and post-discectomy pseudocyst cases since 2009

Location	Results	DC	PDP
Cyst wall	Dense fibrous connective tissue without specific lining cell layer	12 cases[9-19]	2 cases[2,7]
	N/A	1 case[20]	2 cases[3,8]
Content	Serous bloody fluid	8 cases[9-11,13-15,20]	3 cases[2,3,8]
	Clear fluid, similar to spinal fluid	1 case[12]	1 case[7]
	N/A	4 cases[16-19]	0 case
Communicating stalk	Confirmed	13 cases[9-20]	2 cases[2,3]
	N/A	0 case	2 cases[7,8]

DC: Discal cyst; PDP: Post-discectomy pseudocyst; N/A: No histology results.