**Core Concept**
Middle ear cholesteatoma is a type of skin cyst located in the middle ear, characterized by the accumulation of keratin debris and potential for destructive bone erosion. This condition often requires surgical intervention to prevent complications such as hearing loss, facial paralysis, and intracranial infections.

**Why the Correct Answer is Right**
The primary treatment of middle ear cholesteatoma involves surgical removal of the cyst and affected bone, followed by reconstruction of the middle ear to restore hearing function. This procedure is typically performed by an otolaryngologist or neurotologist. The goal of surgery is to remove the cholesteatoma, repair any associated hearing loss, and prevent recurrence.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because antibiotics alone are not sufficient to treat the underlying cause of middle ear cholesteatoma, which is a physical cystic structure.

**Option B:** This option is incorrect because tympanostomy tubes are used to treat middle ear effusion or recurrent acute otitis media, not middle ear cholesteatoma.

**Option C:** This option is incorrect because corticosteroids may be used to reduce inflammation, but they do not address the underlying cystic structure of the cholesteatoma.

**Clinical Pearl / High-Yield Fact**
Middle ear cholesteatoma can be a challenging condition to diagnose, as the symptoms may be non-specific and the condition may not be immediately apparent on otoscopy or imaging studies. A high index of suspicion and thorough evaluation, including CT or MRI scans, are essential for accurate diagnosis and treatment.

**Correct Answer: C. Surgical removal of the cholesteatoma and affected bone, followed by reconstruction of the middle ear.**