Table 2.
Case Material (Preoperative and Postoperative Features)
| Case | Age/Sex | Histology | Preop Nerve Losses (VII [I–VI HB]; IX,X,XI,XII) | Preop Hearing PTA, (% discr.) | Extent of Lesion | Procedure and Date (mm/yy) | Postop Nerve Changes (VII; IX,X,XI,XII) | Postop Hearing (Change; Follow-up) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| / = Preoperative normal or postoperative unchanged. | ||||||||||||
| Preop, before surgery; HB, House-Brackmann grade; PTA, pure tone average; discr., discrimination; postop, after surgery; JF, jugular fossa; CPA, cerebellopontine angle; POTS, petro-occipital trans-sigmoid approach; i, intradural; e, extradural; NED, no evidence of disease; n, nerve; C, clivus; P, petrous bone; Co, occipital condyle; A, petrous apex; CC, carotid canal; TL, translabyrinthine; PPS, parapharyngeal space; T, tympanum; M, mastoid; 7th graft, graft on the facial nerve; Tpl, tympanoplasty; IAC, internal auditory canal; Tp, transpetrous; DOD, dead of disease; AWD, alive with disease; G1, grade of differentiation. | ||||||||||||
| 1 | 40/F | Schwannoma | / | / | 29.0% | JF, CPA | POTS, i + e | 09/85 | / | IX,X | / | NED 15 y |
| 2 | 16/F | Schwannoma 12th n. | / | XII | 0, 100% | C, Co, JF | POTS, e | 09/86 | / | IX,X,XI | / | NED 18 y |
| 3 | 48/F | Schwannoma | / | IX,X,XII | deaf | JF, A, CC, CPA, Co | POTS + TL, i + e | 07/87 | / | / | / | NED 10 y |
| 4 | 49/M | Schwannoma | / | XII | 20, 100% | JF, CC, PPS | POTS, e | 10/89 | / | / | / | NED 10 y |
| 5 | 25/M | Schwannoma | II | / | deaf | JF, A, CC, T, CPA | POTS, i + e | 06/90 | / | / | / | NED 10 y |
| 6 | 48/F | Schwannoma | / | /IX,X,XI,XII | 20, 100% | JF, PPS | POTS, e | 09/90 | / | / | / | NED 10 y |
| 7 | 37/M | Schwannoma | / | // | deaf | JF, CPA | POTS + TL, i + e | 09/90 | / | / | / | NED 10 y |
| 8 | 39/M | Schwannoma | / | /IX,X,XI | 40, 70% | JF, CPA, PPS | POTS, i + e | 01/91 | / | / | / | NED 10 y |
| 9 | 23/M | Schwannoma | / | /IX,X,XI,XII | 10, 100% | JF, CC, CPA, Co | POTS, i + e | 09/92 | / | / | / | NED 10 y |
| 10 | 40/F | Schwannoma | / | /IX,X,XI | 15, 100% | JF, CPA, PPS | POTS, i + e | 08/93 | II | / | / | NED 10 y |
| 11 | 42/F | Schwannoma | / | X,XII | / | JF, PPS, CC | POTS, e | 11/96 | / | / | / | NED 5 y |
| 12 | 58/M | Schwannoma | / | / | deaf | JF, CPA,PPS | POTS + TL, i + e | 02/96 | / | IX,X | / | NED 5 y |
| 13 | 45/F | Schwannoma | / | /IX,X,XI,XII | / | JF, CC | POTS, e | 01/99 | / | / | / | NED 5 y |
| 14 | 50/M | Schwannoma | / | / | deaf | JF, CPA, PPS | POTS, i + e | 12/99 | / | IX,X | / | NED 5 y |
| 15 | 26/M | Schwannoma 7th n. | V | / | / | M, JF, P | POTS, e | 06/96 | III | / | / | NED 5 y |
| 16 | 51/M | Schwannoma | / | IX,X | 55, 60% | JF, M, 7N. | POTS, e | 09/00 | III | / | / | NED 5 y |
| 17 | 22/M | Schwannoma | / | IX,X | JF, Co, CPA | POTS, i + e | 10/00 | / | / | / | NED 5 y | |
| 18 | 41/M | Schwannoma | / | IX,X | JF, Co | POTS, e | 05/04 | NED 1 y | ||||
| 19 | 40/M | Schwannoma 8th n. | III | / | deaf | JF, A | POTS, i + e | 05/95 | / | / | / | NED 9 y |
| 20 | 45/M | Schwannoma 7th n. | II | / | 50, 100% | JF, T, PPS | POTS, e + 7th graft | 06/92 | III | / | / | 20, 100% |
| 21 | 68/F | Paragangl. C1 D1 | / | IX,X,XI,XII | 35, 90% | JF, CPA, C | POTS, i + e | 11/89 | / | / | / | NED 10 y |
| 22 | 39/F | Paragangl. C1 D1 | / | IX,X,XII | 15, 100% | JF, CPA, Co | POTS, i + e | 11/89 | / | XI | / | NED 10 y |
| 23 | 65/F | Paragangl. C1 | VI | IX,X,XI,XII | 15, 100% | JF | POTS, e + 7th graft | 07/90 | IV | / | / | NED 10 y |
| 24 | 69/F | Paragangl. C1 | / | / | 45, 80% | JF | POTS, e, deliberate partial removal | 11/91 | / | / | / | AWD,DOD C 7 y |
| 25 | 51/M | Paragangl. C1 D1 | III | IX,X | deaf | JF, A, Co, CPA | POTS + TL, i + e | 05/92 | / | / | / | NED 10 y |
| 26 | 66/F | Paragangl. C1( + mening.) | / | / | 50, 50% | JF, CPA | POTS, i + e | 04/99 | / | / | / | NED 5 y |
| 27 | 44/F | Meningioma | / | / | 24, 90% | JF, CPA | POTS, i + e | 07/90 | / | IX,X,XI | / | NED 15 y |
| 28 | 42/F | Meningioma | / | / | deaf | JF, CPA, IAC | POTS, i + e | 06/91 | / | XI,X | / | NED 8 y |
| 29 | 60/M | Meningioma | / | / | 55, 80% | JF, CPA | POTS, i + e | 09/91 | / | IX,X,XI | 60, 50% | LOST |
| 30 | 42/F | Meningioma | / | / | 20, 100% | JF, Co, CPA, CC | POTS, i + e | 12/93 | / | IX,X | deaf | NED 10 y |
| 31 | 35/F | Meningioma | / | / | 10, 100% | JF, T, A, CC, Co, CPA, PPS | POTS, i + e | 06/94 | / | IX,X,XI,XII | deaf | NED 10 y |
| 32 | 44/F | Meningioma | / | / | 60, 40% | JF, CPA | POTS, i + e | 03/98 | / | IX,X,XI | deaf | NED 5 y |
| 33 | 39/F | Meningioma | / | / | 10, 100% | JF, CPA, SS, PPS | POTS, i + e | 06/02 | / | IX,X,XI,XII | deaf | NED 3 y |
| 34 | 30/M | Cholesteatoma | / | / | deaf | JF, A | POTS, e | 01/85 | / | / | / | NED 10 y |
| 35 | 76/M | Cholesteatoma | VI | / | 55, 70% | JF, l, T, CPA | POTS, e | 02/93 | / | / | deaf | NED 10 y |
| 36 | 46/F | Cholesteatoma | / | / | 10, 100% | JF, T, CC | POTS + petrosectomy, e | 06/94 | / | / | 45, 50% | NED 10 y |
| 37 | 61/M | Cholesteatoma | / | / | 45, 50% | JF, M | POTS, e | 12/00 | / | / | deaf | NED 3 y |
| 38 | 40/F | Cholesteatoma | III | / | deaf | JF, M | POTS + TL, e | 08/85 | / | / | / | NED 10 y |
| 39 | 28/M | Cholesteatema | / | / | deaf | JF, M, T | POTS + Tpl, e | 04/98 | / | / | / | NED 5 y |
| 40 | 22/M | Cholest. Granuloma | VI | / | deaf | JF, CPA, A, CC, IAC | POTS, Tp + Graft, i + e | 07/90 | III | / | / | NED 10 y |
| 41 | 40/F | Chordoma | / | IX,X,XII | 27, 100% | JF, CC, Co, T, PPS | POTS, e | 12/90 | / | / | / | DOD 5 y |
| 42 | 16/F | Chordoma | / | IX,X,XI,XII | / | JF, PPS | POTS, e | 06/98 | / | / | / | AWD 8 y |
| 43 | 56/M | Chordoma | / | IX,X,XI,XII | / | JF | POTS, e | 01/96 | / | / | / | DOD 8 y |
| 44 | 47/F | Chordoma | / | IX,XII | / | JF, Cl, Co, A | POTS, e | 12/02 | / | / | deaf | AWD 3 y |
| 45 | 22/F | Chondrosar. G1 | / | / | 19, 100% | JF, A, CC | POTS, e | 11/97 | / | / | / | NED 7 y |
| 46 | 23/F | Chondrosarc. G1 | / | / | 10, 100% | JF, A, Cl, CC | POTS, e | 05/98 | / | / | / | NED 6 y |
| 47 | 60/M | Chondrosarc. G1 | / | IX,X,XI,XII | 50, 40% | JF, PPS | POTS, e | 02/98 | / | / | deaf | DOD 4 y |
| 48 | 54/F | Chondrosarc. G1 | VIth n. / | / | 15, 100% | JF, A,Cl, Co | POTS, e | 12/00 | / | IX,X | deaf | NED 3 y |
| 49 | 36/M | Chondrosarc. G1 | / | / | 30, 90% | JF, Co, CC, PPS | POTS, e | 03/01 | / | / | / | NED 3 y |
| 50 | 37/M | Chondrosarc. G1 | / | IX,X,XI,XII | 45, 70% | JF, Co, Cl, CC | POTS, e | 11/01 | / | / | deaf | NED 3 y |
| 51 | 26/M | Papillary aden. | / | IX,X | deaf | JF, CC | POTS + TL, i + e | 05/95 | / | / | / | NED 7 y |
| 52 | 56/M | Papillary aden. | III | / | deaf | JF, CPA, A | POTS, i + e | 03/97 | V | / | / | NED 5 y |
| 53 | 25/M | Papillary aden. | / | / | deaf | JF, CPA | POTS, i + e | 11/99 | / | / | / | NED 4 y |
| 54 | 61/F | Epithelioid hemangioma | / | IX,X,XI,XII | 35, 70% | JF, Co, C | POTS, e | 07/96 | / | / | 90, 0% | NED 8 y |
| 55 | 24/M | Teratoma | / | / | 60, 90% | JF, PPS | POTS, e | 10/89 | / | / | / | NED 15 y |
| 56 | 32/M | Petrous Cyst | / | / | deaf | JF, A, CC, PPS | POTS, e | 01/92 | / | / | / | NED 10 y |
| 57 | 49/M | Residual Paraganglioma | III | XII | deaf | JF, CPA, Co | POTS, i + e | 09/87 | / | / | / | AWD 15 y |
| 58 | 39/M | Residual Paraganglioma | / | / | 70, 40% | JF,CC, T | POTS, e | 09/88 | / | IX,X,XII | deaf | AWD 15 y |
| 59 | 50/F | Residual Paraganglioma | / | IX,X,XI,XII | 10, 90% | CC, C | POTS, e | 04/89 | / | / | 20, 80% | NED 15 y |
| 60 | 56/M | Residual Paraganglioma | / | IX,X,XI,XII | / | JF | POTS, e | 01/96 | / | IX,X,XII | / | NED 12 y |
| 61 | 62/F | Residual Paraganglioma | III | / | deaf | Co | POTS + TL, e | 04/90 | / | IX,XI | / | NED 12 y |