A 27-years old man presents with a left testicular tumor with a 10 cm retroperitoneal lymph node mass. The treatment of choice is:
**Core Concept**
The question is testing the management of testicular cancer, specifically non-seminomatous germ cell tumors (NSGCTs), which are known for their aggressive behavior and high propensity for metastasis to the retroperitoneal lymph nodes.
**Why the Correct Answer is Right**
The treatment of choice for a 10 cm retroperitoneal lymph node mass in a patient with testicular cancer is retroperitoneal lymph node dissection (RPLND). This surgical procedure is indicated for patients with advanced NSGCTs who have a residual mass after chemotherapy, as it allows for the removal of potentially malignant lymph nodes and can improve outcomes. RPLND is typically performed by a urologic oncologist or a general surgeon with expertise in oncology.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because orchiectomy (surgical removal of the testicle) is the initial step in the management of testicular cancer, but it is not sufficient for a patient with a large retroperitoneal lymph node mass.
**Option B:** This option is incorrect because chemotherapy is an essential component of the treatment for testicular cancer, but it is not the treatment of choice for a patient with a bulky retroperitoneal lymph node mass.
**Option C:** This option is incorrect because radiation therapy is not typically used as a primary treatment for testicular cancer, especially in the case of a large retroperitoneal lymph node mass.
**Clinical Pearl / High-Yield Fact**
Retroperitoneal lymph node dissection is a complex surgical procedure that requires expertise in oncology and urology. It is essential to identify patients who are suitable candidates for RPLND, as it can improve outcomes and reduce the risk of recurrence.
**Correct Answer:** C. Retroperitoneal lymph node dissection (RPLND).