**Question:** Which one of the following is not an intravesical chemotherapeutic agent

A. Mitomycin C
B. Bacillus Calmette-Guérin (BCG)
C. Epirubicin
D. Adriamycin

**Core Concept:** Intravesical chemotherapy involves the administration of chemotherapy drugs directly into the bladder to treat bladder cancer or other bladder disorders. The correct drugs for this purpose are discussed below.

**Why the Correct Answer is Right:** Mitomycin C, Bacillus Calmette-Guérin (BCG), and Epirubicin are used as intravesical chemotherapeutic agents. Mitomycin C is a mitotic inhibitor that acts by cross-linking DNA and preventing DNA synthesis, leading to cell death. Bacillus Calmette-Guérin (BCG) is a live attenuated strain of Mycobacterium bovis that stimulates the immune system to target and destroy cancer cells in the bladder. Epirubicin is an anthracycline antibiotic that interferes with DNA and RNA synthesis, inhibiting cell division and leading to cell death.

**Why Each Wrong Option is Incorrect:**

D. Adriamycin (Doxorubicin) is an anthracycline antibiotic that works by inhibiting DNA and RNA synthesis, leading to cell death. However, it is not specifically used for intravesical administration and is typically administered intravenously for systemic chemotherapy.

**Why Each Wrong Option is Incorrect:**

A. Mitomycin C is a mitotic inhibitor, not an anthracycline antibiotic like Doxorubicin. As mentioned earlier, Mitomycin C is used for intravesical chemotherapy.

B. Epirubicin is also an anthracycline antibiotic, similar to Doxorubicin, but it is used for intravesical administration like Mitomycin C and BCG.

C. Epirubicin is an anthracycline antibiotic used for intravesical administration like Mitomycin C, BCG, and Doxorubicin.

**Clinical Pearl:** Intravesical chemotherapy is a common treatment for non-muscle-invasive bladder cancer. It involves the administration of chemotherapeutic agents directly into the bladder to target and destroy cancer cells. This method reduces systemic side effects associated with systemic chemotherapy while providing targeted treatment for the bladder.