Table 3 Postoperative complications following keyhole surgery

Meningioma patients

54

 Facial numbness

1(petroclival meningioma)/54 (1.9%)

 Facial weakness^a

2 /54 (1.9%)^a

 Cerebrospinal fluid leak^b

4/54 (7.4%)^b

Pituitary adenoma patients

2

 Diabetes insipidus w/o sequelae^a

1/2 (50%)^a

 Diabetes insipidus w/ sequelae^a

1/2 (50%)^a

Acoustic neuroma patients

7

 Unilateral hearing loss

4/7 (57.1%)

 HB grade I facial paralysis

2/7 (28.6%)

 HB grade II facial paralysis

2/7 (28.6%)

 HB grade III facial paralysis

1/7 (14.2%)

 HB grade IV facial paralysis

2/7 (28.6%)

Schwannoma patients

5

 CN VI injury

1/5 (20.0%)

 CN V injury

2/5 (20.0%)

Glioma patients

25

 Expressive aphasia

1/25 (4.0%)

 Mutism^a

2/25 (8.0%)^a

 Neglect

1/25 (4.0%)

 Hydrocephalus causing delirium^c

2/25 (8.0%)^c

 Deep vein thrombosis

1/25 (4.0%)