Table 1. Clinical features of patients with NF VS and sporadic VS. Tumor extension and hearing function according to the Hannover classification are shown along with the respective histological subtype.
| Tissue | Tumor growth dynamic | Tumor extension | Hearing function | Histological type* | |||||
|---|---|---|---|---|---|---|---|---|---|
| ≤ T3A | ≥ T3B | H1/2 | H3/4 | H5/6 | A | B | A/B | ||
| NF VS | s.p. | 4 | 11 | 4 | 7 | 4 | 9 | 0 | 4 |
| r.p. | 1 | 14 | 6 | 1 | 8 | 7 | 1 | 5 | |
| Sporadic VS | s.p. | 4 | 12 | 3 | 8 | 4 | 9 | 1 | 5 |
| r.p. | 6 | 8 | 5 | 6 | 4 | 9 | 2 | 4 | |
Abbreviations: s.p.= slow progression, r.p.= rapid progression, NF = neurofibromatosis type 2, NF VS = NF-associated with vestibular schwannoma, sporadic VS = sporadic vestibular schwannoma (not associated with NF).
*The histological Antoni type was not known for all cases.