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. 2021 Sep 1;154(3):335–344. doi: 10.1007/s11060-021-03832-5

Table 3.

Surgery, histology, postoperative morbidity, mean and maximum follow-up

Surgery, histology, postoperative morbidity, follow-up All patients Group I (age: ≤ 64 yrs) Group II (age: ≥ 65 yrs) Subgroup IIa (age: 65–69 yrs) Subgroup IIb (age: 70–79 yrs) Subgroup IIc (age: ≥ 80 yrs)
No. % No. % No. % No. % No. % No. %
Simpson grade
 I 391 50.9 233 48.1 158 55.6 54 53.5 84 58.3 20 48.8
 II 218 28.4 136 28.1 82 28.9 35 34.7 35 24.3 13 31.7
 III 28 3.6 21 4.3 7 2.5 3 3 3 2.1 1 2.4
 IV 86 11.2 62 12.8 24 8.5 6 5.9 14 9.7 5 12.2
 V 7 0.9 6 1.2 1 0.4 1 0.7
 NK 38 4.9 26 5.4 12 4.2 3 3 7 4.9 2 4.9
WHO classification
 I 673 87.6 423 87.4 250 88 89 88.1 131 91 32 78
 II 67 8.7 46 9.5 21 7.4 9 8.9 6 4.2 6 14.6
 III 10 1.3 5 1 5 1.8 1 1 3 2.1 1 2.4
 NK 7 0.9 2 0.4 5 1.8 1 1 2 1.4 2 4.9
Mean Ki67-index 5.8 5.6 6 5.1 5.9 8.2
Entire postoperative morbidity 286 37.2 154 31.8 132 46.5 45 44.6 66 45.8 21 51.2
Postoperative morbidities
 Bleeding 99 12.9 44 9.1 55 19.4 16 15.8 27 18.8 12 29.3
 Palsy 25 3.3 8 1.7 17 6 6 5.9 8 5.6 3 7.3
 Cranial nerve disorder 77 10 49 10.1 28 9.9 11 10.9 15 10.4 2 4.9
 CFS fistula 62 8.1 37 7.6 25 8.8 11 10.9 12 8.3 2 4.9
 Speech disorder 20 2.6 5 1 15 5.3 6 5.9 6 4.2 3 7.3
 Seizure 29 3.8 14 2.9 15 5.3 5 5 5 3.5 5 12.2
 Meningitis 4 0.5 3 0.6 1 0.4 1 0.7
 Delirium 14 1.8 4 0.8 10 3.5 3 3 6 4.2 1 2.4
 Hormonal disorder 4 0.5 4 0.8
 Ischemic infraction 14 1.8 6 1.2 8 2.8 2 2 5 3.5 1 2.4
 Vein thrombosis 8 1 6 1.2 2 0.7 2 1.4
 Pulmonary embolism 4 0.5 1 0.2 3 1.1 2 1.4 1 2.4
 Pneumonia 11 1.4 3 0.6 8 2.8 1 1 4 2.8 3 7.3
 Iatrogenic pneumothorax 11 1.4 6 1.2 5 1.8 1 1 3 2.1 1 2.4
 Respiratory insufficiency 7 0.9 3 0.6 4 1.4 2 1.4 2 4.9
 Renal insufficiency 2 0.3 2 0.7 2 4.9
 Heart attack 1 0.1 1 0.4 1 0.7
 Heart/circulatory failure 7 0.9 3 0.6 4 1.4 4 2.8
Discharge to home 586 76.3 394 81.4 192 67.6 77 76.2 98 68.1 18 43.9
Discharge to rehabilitation clinic or another department 141 18.4 61 12.6 80 28.2 15 14.9 43 29.9 22 53.7
Mean follow-up in months 40 47 28 36 26 8
Maximum follow-up in months 215 215 155 202 132 38

NK not known, yrs years