A 52-year-old postmenopausal woman from Rajasthan presents with vaginal bleeding for 3 months. Cervical examination reveals a friable, bleeding mass. Biopsy confirms squamous cell carcinoma of the cervix. Staging investigations (MRI pelvis and CT chest) show a 4 cm cervical lesion with parametrial invasion but no distant metastases. The tumor does not involve the pelvic sidewall or bladder/rectum. According to FIGO 2009 staging, what is the most likely stage of this malignancy?

Explanation

## FIGO 2009 Cervical Cancer Staging **Clinical Findings:** - Tumor size: 4 cm (>4 cm would be IB2; ≤4 cm is IB1) - **Parametrial invasion: PRESENT** (key finding) - No pelvic sidewall involvement - No bladder/rectal mucosal involvement - No distant metastases **Key Point:** Parametrial invasion is the hallmark of Stage II disease. The presence of parametrial involvement automatically excludes Stage I (confined to cervix). **FIGO 2009 Staging Breakdown:** | Stage | Definition | |-------|------------| | **IB1** | ≤4 cm, confined to cervix | | **IB2** | >4 cm, confined to cervix | | **IIA1** | ≤4 cm, upper 2/3 vagina, no parametrial involvement | | **IIA2** | >4 cm, upper 2/3 vagina, no parametrial involvement | | **IIB** | **Any size, parametrial involvement, no pelvic sidewall** | | **IIIA** | Involves lower 1/3 vagina, no pelvic sidewall | | **IIIB** | Pelvic sidewall and/or hydronephrosis | **Clinical Pearl:** Stage IIB is defined by **parametrial invasion without pelvic sidewall involvement**. This patient's tumor (4 cm with parametrial invasion but no sidewall/bladder/rectal involvement) fits Stage IIB exactly. **High-Yield:** The distinction between Stage IIA and IIB hinges entirely on parametrial involvement—not on tumor size or vaginal extension.