**Core Concept**
Superficial bladder carcinoma refers to non-muscle invasive bladder cancer (NMIBC) that remains confined to the bladder mucosa and submucosa. Treatment aims to eradicate the tumor while preserving bladder function. The choice of treatment depends on the tumor's size, number, and location, as well as the patient's overall health.

**Why the Correct Answer is Right**
For a single papillary lesion, transurethral resection of bladder tumor (TURBT) is the preferred initial treatment. This procedure involves removing the tumor through a cystoscope, allowing for histopathological examination to determine the tumor's grade and stage. TURBT is effective in managing small, solitary tumors and is often curative. In some cases, adjuvant intravesical therapy with chemotherapy or immunotherapy may be recommended to reduce recurrence rates.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because TURBT is the standard treatment for superficial bladder carcinoma, and other options like radical cystectomy are generally reserved for muscle-invasive bladder cancer or recurrent disease.
**Option B:** This option is incorrect because intravesical therapy is often used as an adjunct to TURBT, rather than as the sole treatment for a single papillary lesion.
**Option C:** This option is incorrect because chemotherapy or radiation therapy are not typically used as first-line treatments for superficial bladder carcinoma.
**Option D:** This option is incorrect because surveillance with regular cystoscopy and urine cytology is typically recommended for patients with low-risk superficial bladder carcinoma, rather than immediate treatment.

**Clinical Pearl / High-Yield Fact**
For patients with superficial bladder carcinoma, the risk of recurrence increases with the number of tumors and the presence of high-grade or carcinoma in situ disease. Close follow-up with regular cystoscopy and urine cytology is essential to detect recurrence early.

**Correct Answer:** C. TURBT. Transurethral resection of bladder tumor.