Table 1.

Patient Characteristics.

No.	Age, y	Sex	Diagnosis	Approach	Procedure
1	65	Female	Meningioma WHO I C2-C3	Posterior cervical	Laminectomy C2-C3, resection
2	59	Male	Metastasis squamous cell lung carcinoma C0-C3	Posterior cervical	Craniotomy posterior fossa, laminectomy C1-C3, resection
3	75	Female	Metastasis mamma carcinoma L2	Lateral lumbar	Tumor resection, vertebral body replacement L2
4	51	Male	Suspected intradural lymphoma L1-L3	Posterior lumbar	Laminectomy, biopsy
5	61	Male	Recurrent lumbar disc herniation L3/4 right	Posterior lumbar	Removal of free disc fragment and spondylodesis L3/4 (transforaminal lumbar interbody fusion [TLIF])
6	75	Male	Small-cell lung carcinoma T8 and T9	Posterior thoracic	Posterior fixation T6 - T11, hemilaminectomy T8-T9, decompression, and biopsy
7	59	Male	Neuroendocrine carcinoma metastasis T6	Posterior thoracic	Laminectomy T6, complete resection
8	54	Male	Spondylodiscitis T7/8 and T8/9	Posterior thoracic	Posterior fixation T5-T11, decompression T8
9	31	Female	Benign cystic lesion T11-T12	Posterior thoracic	Partial laminectomy T11, laminectomy T12, cyst drainage
10	61	Female	Adhesive arachnoiditis T3-T4	Posterior thoracic	Laminoplasty T3-T4, intradural decompression
11	68	Female	Mesenchymal chondrosarcoma T2 and T6	Posterior thoracic	Posterior fixation T1-T4, laminectomy T6, decompression, partial resection
12	73	Female	Spinal stenosis C5 + C6, cervical myelopathy	Anterior cervical	Vertebral body replacement C5 + C6 and C4-C7 lateral mass fixation
13	60	Male	Recurrent lumbar disc herniation L4/5 right	Posterior lumbar	Removal of free disc fragment/decompression
14	64	Male	Small-cell lung carcinoma T1	Anterior thoracic	Corpectomy T1, vertebral body replacement T1, posterior fixation C7-C2
15	38	Female	Adjacent level disease after spondylodesis/pseudarthrosis L5/S1	Posterior lumbar	L5/S1 cage revision, revision S1 screws, new S2 screws
16	58	Female	Spondylodiscitis destruction of T8 and T9, previous fixation T4-T11	Posterior thoracic	Vertebral body replacement T8 and T9
17	66	Male	Meningioma WHO I T7	Posterior thoracic	Laminectomy T6-T8, complete resection
18	44	Male	Lateral disc herniation L3/L4 right	Posterior lumbar paramedian	Paramedian approach, removal of disc fragment
19	84	Female	Lateral disc herniation L3/L4 left	Posterior lumbar paramedian	Paramedian approach, removal of disc fragment
20	84	Female	Meningioma WHO I T1-T2	Posterior thoracic	Laminectomy T1-T2, complete resection
21	57	Female	Meningioma WHO I C1	Posterior cervical	Laminectomy C1, complete resection
22	19	Female	Intradural adhesions after resection of a chondrosarcoma T5 and T6	Posterior thoracic	Intradural decompression T5-T6
23	46	Male	Deformity C2-C5	Anterior cervical	Decompression, vertebral body replacement C2
24	46	Male	Deformity C2-C5, revision	Anterior cervical	Refixation of vertebral body replacement C2
25	58	Female	Metastasis adenocarcinoma of the lung T1-T2	Posterior thoracic	Laminectomy T1-T2, decompression, intradural biopsy, duraplasty
26	50	Male	Medial disc herniation T8/9 (after laminectomy)	Lateral thoracic	Lateral approach, removal of calcified disc herniation and posterior fixation T8/T9
27	67	Female	Lateral disc herniation L4/L5 left	Posterior lumbar paramedian	Paramedian approach, removal of disc fragment
28	38	Female	Intradural myelon tethering after trauma T3/T4	Posterior thoracic	Laminectomy T3-T4, de-tethering
29	76	Female	Meningioma WHO I T11-T12	Posterior thoracic	Laminectomy T11-T12, complete resection
30	66	Female	Meningioma WHO I C1	Posterior cervical	Laminectomy C1, complete resection
31	58	Male	Arteriovenous fistula L4	Posterior lumbar	Laminectomy L4, occlusion of fistula
32	29	Male	Arachnoidal cyst	Posterior cervical	Laminectomy C1, complete resection
33	59	Male	Glioma WHO II C0-C2	Posterior cervical	Craniotomy posterior fossa, laminectomy C1, biopsy
34	52	Female	Neurinoma WHO I L2 left	Lateral lumbar	Paraspinal approach, complete resection
35	62	Female	Medial disc herniation T8/9	Lateral thoracic	Lateral approach, removal of disc herniation
36	38	Female	Ependymoma WHO II C7-T2	Posterior cervicothoracic	Laminectomy C7-T2, complete resection
37	61	Male	Foraminal stenosis L4/L5 left, compression L4	Posterior lumbar	Midline posterior approach, decompression
38	50	Female	Osteoclastoma L1	Lateral lumbar	Corpectomy L1, vertebral body replacement L1, posterior fixation T11-L3
39	36	Female	Hemangioblastoma WHO I C1	Posterior cervical	Laminectomy C1, complete resection
40	55	Male	Intradural fibroma L3/L4	Posterior lumbar	Laminectomy L3, complete intradural resection
41	81	Female	Metastasis thyroid cancer L3	Posterior lumbar	Laminectomy L3, resection of extradural tumor
42	60	Male	Lateral disc herniation L4/L5 left	Posterior lumbar paramedian	Paramedian approach, removal of disc fragment