[Evaluation of accuracy of three assays for human papillomavirus detection and typing: Hybrid Capture 2, HPV Consensus kit and Amplicor HPV]. / Evaluation des performances de trois techniques de détection et de typage des papillomavirus humains: Hybrid Capture 2, HPV Consensus kit et Amplicor HPV.

BACKGROUND: Detection of high-risk human papillomavirus has proved its usefulness in complement of abnormal cervical scrape result. The Hybrid Capture 2 (HC2, Digene) test has proven its efficiency. We have compared this test with HPV Consensus kit (HPVC, Argène) and Amplicor HPV test (AHPV, RocheDiagnostics) on a panel of 88 samples with low HC2 ratios or discordant results between HC2 and cervical scrape. MATERIAL AND METHODS: Cervical samples were tested in parallel by the three methods using a nested amplification of L1 region as reference. RESULTS: Eighty-six samples were suitable for analysis. Results of HC2 and AHPV tests were closely related. The use of a "generic" probe in the HPVC test was responsible for undetermined results, which were not clinically relevant. CONCLUSION: Despite the low viral load of the samples chosen, the hybridization (HC2) and PCR (AHPV or HPVC) methods gave comparable results, with false positive and false negative results for all tests, but a 75% concordance and a high sensibility to detect HPV infection. However, a complementary study on a larger population with ASCUS diagnosis and biopsy under colposcopy would be necessary to valid these assays for a clinical indication.

[Hybrid Capture 2 vs HPV Consensus kit: comparison of 2 assays for human papillomavirus detection and typing]. / Comparaison de deux techniques de détection et de typage des papillomavirus humains: Hybrid Capture 2 et HPV Consensus kit.

BACKGROUND: Many laboratories use the DNA Hybrid Capture 2 HPV-high risk assay (Digene) to detect and type oncogenic HPV. The aim of this work was to compare this assay with a new HPV genotyping assay: HPV Consensus kit (Argène). Actually, this assay is not commercially available. MATERIALS AND METHODS: Ninety-four cervical samples were tested with both the routine assay Hybrid Capture 2 and the HPV Consensus kit. Discordant results were analysed by amplification with a nested PCR and sequencing of amplified products. RESULTS: Only 81 results could be analysed concerning the oncogenic risk. The overall concordance was 92,6%. But we find 13 "generic" results with the HPV Consensus kit, the generic probe including high risk and low risk genotypes. CONCLUSION: HPV Consensus kit results showed a better detection sensitivity for this assay than Hybrid Capture 2 assay. Nevertheless, "generic" results give no information about the oncogenic risk of the HPV detected in a sample.

[Thyroid paraganglioma: report of a case]. / Paragangliome thyroïdien: à propos d'un cas.

A case of thyroid gland paraganglioma is reported in a 48-year-old woman with cold thyroid nodule. Review of the literature reveals only 4 cases of intrathyroidal paraganglioma but none of them have complete immunohistochemical study. The main differential diagnosis in this localization, namely medullary carcinoma and trabecular hyalinizing adenoma, are discussed.