**Core Concept**
Neurofibromatosis type 2 (NF2) is a genetic disorder characterized by the growth of non-cancerous tumors in the nervous system, particularly affecting the auditory and vestibular systems. NF2 is distinct from neurofibromatosis type 1 (NF1) and is associated with specific types of tumors.

**Why the Correct Answer is Right**
NF2 is strongly associated with the development of vestibular schwannomas (also known as acoustic neuromas), which are benign tumors affecting the vestibular nerve. In addition, NF2 patients are at risk of developing spinal cord astrocytomas and meningiomas, which are types of brain tumors. The genetic mutation responsible for NF2 leads to the inactivation of the Merlin protein, a tumor suppressor gene that normally regulates cell growth and division. Without functional Merlin, cells can grow and divide uncontrollably, leading to tumor formation.

**Why Each Wrong Option is Incorrect**
**Option A:** Tuberous sclerosis is characterized by the growth of benign tumors in various organs, including the brain, but it is not specifically associated with vestibular schwannomas, spinal cord astrocytomas, or meningiomas.

**Option B:** Neurofibromatosis type 1 (NF1) is a distinct genetic disorder that affects the development of neurofibromas, cafe-au-lait spots, and other skin manifestations, but it is not directly linked to the tumors mentioned in the question.

**Option C:** Von Hippel-Lindau syndrome is a genetic disorder that predisposes individuals to develop hemangioblastomas in the brain and retina, as well as renal cell carcinoma and other tumors, but it is not specifically associated with vestibular schwannomas, spinal cord astrocytomas, or meningiomas.

**Clinical Pearl / High-Yield Fact**
NF2 patients often present with hearing loss, tinnitus, or balance problems due to vestibular schwannomas. Early detection and treatment can help preserve hearing and prevent further complications.

**✓ Correct Answer:** D. Neurofibromatosis - 2