Surgical Staging and Resection of Cervical Cancer

A Type A procedure involves minimal vaginal margins and no resection of the paracervical tissues.

Modified Radical Hysterectomy (Type B)

Type B involves a more extensive resection than Type A. It includes the removal of the paracervix at the level of the ureter bed and the excision of the upper 1–2 cm of the vagina.

Radical Hysterectomy (Type C)

Type C is reserved for more advanced early-stage disease, providing much wider margins by including parts of the paracervix and the uterosacral ligaments.

A critical distinction within this category is Type C1, which focuses on nerve preservation to reduce postoperative morbidity. It is important to note that for radical resections, an open abdominal laparotomy is often the recommended approach, as minimally invasive techniques have been associated with lower disease-free and overall survival rates in certain contexts.

Lymph Node Assessment: SLN Mapping and Ultrastaging

For select patients with Stage I disease, evaluating the pelvic lymph nodes is essential to rule out micrometastases.

Sentinel Lymph Node (SLN) Mapping

Instead of performing a full lymphadenectomy, which can cause significant morbidity, surgeons may use Sentinel Lymph Node (SLN) mapping. This process involves:

1. Injecting a dyed or radiocolloid tracer, such as technetium-99m ($^{99m}$Tc), into the cervix.
2. Identifying the "sentinel" nodes—the first nodes to receive drainage, typically located medial to the external iliac vessels or in the obturator space.

If the mapping is successful and the SLNs are negative, a full lymphadenectomy (LND) may be avoided. However, if mapping fails or if nodes appear suspicious or grossly enlarged, a side-specific lymphadenectomy must be performed.

Ultrastaging

Even when nodes appear normal macroscopically, pathologists may perform ultrastaging to detect occult disease. This involves serial sectioning of the lymph nodes using Hematoxylin and Eosin (H&E) or Immunohistochemistry (IHC) to identify isolated tumor cells or micrometastases.

Advanced Disease and Recurrence Management

Pelvic Exenteration

In cases where cervical cancer has recurred or persisted following radiation therapy, the disease may be centrally located in the pelvis. To achieve negative surgical margins in these complex scenarios, surgeons may perform pelvic exenteration. This can be:

• Anterior exenteration
• Posterior exenteration
• Total pelvic exenteration

These are highly specialized, high-morbidity procedures that require significant surgical expertise.

Summary of Surgical Strategies

The following table summarizes the relationship between stage and surgical intent:

Clinical Pearl: In fertility-sparing cases (e.g., Stage IA2–IB1), a radical trachelectomy combined with SLN mapping is often the preferred approach to balance oncologic safety with reproductive goals.