**Question:** In a patient with acoustic neuroma all are seen except:

A. Facial nerve palsy
B. Hemifacial spasm
C. Tinnitus
D. Vertigo

**Core Concept:** Acoustic neuroma is a benign tumor (neuroma) arising from the vestibulocochlear nerve (cranial nerve VIII), which includes both the auditory (acoustic) and balance (vestibular) functions.

**Why the Correct Answer is Right:** Acoustic neuroma is a benign tumor arising from the vestibulocochlear nerve, which is responsible for hearing and balance. The correct answer (A) "Facial nerve palsy" is incorrect because it involves the facial nerve (cranial nerve VII), which is separate from the vestibulocochlear nerve and not affected by an acoustic neuroma.

**Why Each Wrong Option is Incorrect:**

A. Facial nerve palsy: As mentioned earlier, facial nerve palsy is caused by damage to the facial nerve, not the vestibulocochlear nerve (acoustic neuroma) and is therefore not seen in a patient with acoustic neuroma.

B. Hemifacial spasm: This is a disorder characterized by involuntary, rhythmic, and uncontrollable contractions of the facial muscles, usually on one side of the face. It is unrelated to acoustic neuroma and would not be seen in a patient with an acoustic neuroma.

C. Vertigo: Vertigo is a sensation of dizziness or spinning, often accompanied by nausea and vomiting. Although vertigo might be present in some cases, it is not specific to acoustic neuroma and can be seen in various other conditions affecting the inner ear or balance system.

D. Tinnitus: Tinnitus is the subjective perception of a ringing, buzzing, or roaring noise in the ears, without an external auditory stimulus. While tinnitus is commonly associated with acoustic neuroma, it is not exclusive to this condition and can be present in other conditions affecting the auditory system.

**Clinical Pearl:** While tinnitus is a common symptom associated with acoustic neuroma, it is crucial not to rely solely on this symptom for the diagnosis, as it can be present in various other conditions affecting the auditory system. The combination of symptoms and examination findings along with imaging studies (MRI or CT scan) is vital for a proper diagnosis and management of acoustic neuroma.