Clinico-radiological follow-up with annual brain MRI to detect increase of volume and size of the tumor

Surgical cohort with tumor excision through any possible approach to lateral skull base

Self evaluation of quality of life in patient diagnosed with sporadic acoustic neuroma. It is composed of 40 questions, of which 37 are built on a Likert scale from 1 to 5, where 1 indicates strong disagreement and 5 indicates strong agreement, and 3 with 3 possible answers. The questions relate to 8 domains: Hearing Problems, Postural Instability and Imbalance, Pain, Discomfort, and Tinnitus, Facial or Ocular Issues, Impact on Physical, Emotional, and Social Well-being, Difficulties with Thinking and Memory, Satisfaction or Regret, Impact on Work Activity.

The score of questions 1 to 33 is reversed, so that a higher score indicates a favorable health status or better quality of life. The scores for questions 1 to 33 are linearly transformed onto a scale from 0 to 100, where 0 indicates poor quality of life and 100 indicates ideal quality of life. The overall score of the index is calculated as the average of the scores of the first six domains, excluding SatisfactionRegret domain

Decisional regret scale to evaluate any regret about the therapeutic choice both in wait-and-scan cohort and surgical cohort. The score ranges from 0 (no regret) to 100 (complete regret). Patients with more than 25pts are considered to have moderate/high regret

Specific quality of life questionnaire in patient with acoustic neuroma composed of 26 questions built on a Likert scale from 1 to 5, where 1 indicates strong disagreement and 5 indicates strong agreement. The questions relate to 7 domains: Hearing (4 questions), Balance (6 questions), Facial Function (3 questions), Energy (6 questions), Anxiety (4 questions), General Health Status (2 questions), and Pain (1 question).

The score for each domain is calculated as the average of the responses to the questions assigned to it and is linearly transformed onto a scale from 0 to 100, where 0 indicates poor quality of life and 100 indicates ideal quality of life. The overall score of the scale is calculated as the average of the scores of the individual domains.