Background: Paraaortic lymph nodes represent the second level in the lymphatic spread of cervical cancer. Recent studies have confirmed the association of HPV DNA in pelvic lymph nodes in early-stage disease with metastatic involvement and a less favourable prognosis.
Objective: The aim of our study was to detect 13 high-risk genotypes of HPV in paraaortic nodes harvested from patients with FIGO IB2-IIIB tumours and correlate findings with histopathology.
Study Design: The study involved patients with advanced cervical cancer who had undergone low paraaortic lymphadenectomy. The cytobrush technique was used for perioperative sample collection from the tumour and fresh lymphatic tissue. Patients with non-HPV related cancers were used as a control group.
Results: The study involved 24 cervical cancer patients. High-risk HPV DNA was found in the primary tumour of all cases and in PALN in 16 (67%) cases. The most frequent genotype was HPV 16, both in the tumour and in the paraaortic lymph nodes (83% and 54%, respectively). Metastatic involvement of paraaortic lymph nodes was identified in 8 cases (33%), which all were also HPV DNA positive. No HPV DNA was detected in PALN in any of 22 control group cases.
Conclusions: Using the cytobrush technique, the presence of at least one HR HPV genotype in the primary tumour was identified in all the patients. The metastatically involved paraaortic lymph nodes always contained the DNA of at least one HPV genotype present in the primary tumour. Determination of clinical significance of HR HPV DNA presence in histologically negative lymph nodes requires further follow-up of the cohort.
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