**Question:** A woman is found to have a unilateral invasive carcinoma of vulva that is 1 cm in diameter with no stromal invasion and is not associated with evidence of lymph node spread. Initial management should consist of:

A. Wide local excision and vulvectomy
B. Wide local excision and lymph node dissection
C. Wide local excision and radiotherapy
D. Wide local excision and radiotherapy

**Correct Answer:**

**Core Concept:** In the management of a localized invasive carcinoma of the vulva, the choice of treatment depends on the extent of disease and the presence of lymph node involvement.

**Why the Correct Answer is Right:**

For a unilateral invasive carcinoma of the vulva measuring up to 1 cm in diameter with no stromal invasion and no evidence of lymph node spread, the initial management should be focused on removing the primary tumor. Wide local excision, which involves complete excision of the affected vulvar tissue along with a margin of healthy tissue, provides adequate control of the primary tumor while minimizing unnecessary morbidity. In this case, a vulvectomy (removal of the affected vulvar region) may also be considered, as it offers a more extensive surgical excision, but wide local excision is generally preferred.

**Why Each Wrong Option is Incorrect:**

A. Wide local excision and vulvectomy: Although a vulvectomy may be considered, wide local excision alone is sufficient for localized disease up to 1 cm in diameter.
B. Wide local excision and lymph node dissection: Lymph node dissection is only indicated for clinically involved lymph nodes or when the primary tumor is larger than 1 cm. In this case, regional lymph nodes are not involved, so lymph node dissection is unnecessary.
C. Wide local excision and radiotherapy: Radiotherapy is typically reserved for patients with positive lymph nodes or when surgery is contraindicated. In this case, wide local excision is an appropriate primary treatment modality.
D. Wide local excision and radiotherapy: Similar to option C, radiotherapy is not the primary management for localized disease up to 1 cm in diameter without lymph node involvement. Wide local excision remains the appropriate primary treatment.

**Core Concept:** When managing a localized invasive vulvar carcinoma, the choice of treatment depends on the stage of the tumor and the presence of lymph node involvement.

**Why Each Wrong Option is Incorrect:**

A. Wide local excision and lymph node dissection: As mentioned earlier, lymph node dissection is not indicated for primary T1N0 lesions (T1 refers to the size of the primary tumor, N0 refers to the absence of lymph node involvement).
B. Wide local excision and radiotherapy: Radiotherapy is not a primary treatment for localized lesions and should be considered in specific cases like ineligibility for surgery or recurrent disease.
C. Wide local excision and radiotherapy: As mentioned above, radiotherapy is not the primary management for localized disease up to 1 cm in diameter without lymph node involvement. Wide local excision remains the appropriate primary treatment.
D. Wide local excision and radiotherapy: Similar to option C, radiotherapy is not the primary treatment for localized disease up to 1