Incidence of low volume metastases after retrospective ultrastaging of patients with early stage, node negative cervical cancer and receipt of post-operative adjuvant therapy.

Authors

null

Annalyn Welp

University of Virginia Health System, Charlottesville, VA

Annalyn Welp , Michael Crawford , Rachel O'Brien , Stephanie Sullivan , Linda R. Duska

Organizations

University of Virginia Health System, Charlottesville, VA, University of Virginia, Charlottesville, VA, Virginia Commonwealth University, Richmond, VA, University of Virginia School of Medicine, Charlottesville, VA

Research Funding

Other
University of Virginia Peyton Taylor Endowed Research Fund

Background: Nodal positivity directs receipt of adjuvant post-operative therapy in early stage cervical cancer; the significance of low-volume metastases (LVM) is unclear. We hypothesized patients with early stage cervical cancer with high risk factors on pathology and negative nodes would have a higher incidence of LVM on retrospective ultrastaging. Methods: This retrospective cohort study collected clinicopathologic data via chart review on early stage cervical cancer patients treated at our institution from January 2011 - June 2021. The study was approved by the IRB. Inclusion criteria included patients >18 years old who underwent a radical hysterectomy/trachelectomy with pathology-proven negative nodes who went on to be recommended for post-operative adjuvant therapy, due to factors defined under Sedlis or Peters criteria. Patients were excluded for rare histology or prior pelvic radiation. Resected nodes were ultrastaged, performed by 4 re-cuts at 20 microns on each lymph node staging, stained with H&E and one level with CK AE1/AE3 to identify presence of any LVM. Analysis was performed via descriptive statistics with Microsoft Excel. Results: 199 patients were treated with radical hysterectomy between 2011-2021; 20 met study criteria. The average age at diagnosis was 51 years: 65% Caucasian, 25% Black, 10% Latino. 75% had Squamous cell carcinoma, 85% (n=17) of the cohort were a 2009 FIGO pathologic Stage 1B. 35% of the cohort underwent a minimally invasive hysterectomy. Tumor size varied: 25% (n=5) of tumors were less than 2 cm, 35% (n=7) of tumors measured greater than or equal to 2 cm, 30% (n=6) measured greater than or equal to 3 cm, and 10% (n=2) measured greater than or equal to 4 cm. Lymphovascular space invasion was noted in 75% (n=15) of samples. Superficial stromal invasion was noted in 5% (n=1), deep stromal invasion was noted in 65% (n=13). 5% (n=1) of patients had parametrial invasion, and 5% (n=1) had positive margins. A full bilateral pelvic lymphadenectomy was performed on every patient, with 245 nodal blocks ultrastaged. 80% (n=16) received adjuvant therapy: 3 chemoradiation, 13 radiation, 4 declined. LVM was identified in 5% (n=1) patients; a macrometastases was identified as missed in the initial pathologic evaluation of another. 10% (n=2) patients developed recurrence, one at the pelvic brim and one distant (lung). The patient with the newly identified LVM received adjuvant radiation, and developed recurrence at the pelvic brim. Conclusions: The results of this small study suggest traditional “high risk” factors in surgically managed cervical cancer is associated with positive ultrastaged nodes in 5% of cases. This finding suggests that utilization of sentinel node identification with associated ultrastaging will accurately identify patients who will benefit from adjuvant therapy.

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Abstract Details

Meeting

2023 ASCO Annual Meeting

Session Type

Publication Only

Session Title

Publication Only: Gynecologic Cancer

Track

Gynecologic Cancer

Sub Track

Cervical Cancer

Citation

J Clin Oncol 41, 2023 (suppl 16; abstr e17506)

DOI

10.1200/JCO.2023.41.16_suppl.e17506

Abstract #

e17506

Abstract Disclosures