Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA.
Diagn Cytopathol. 2021 Sep;49(9):1008-1011. doi: 10.1002/dc.24805. Epub 2021 May 21.
Hyperchromatic crowded groups (HCGs) are often classified as atypical squamous cells, cannot exclude a high grade squamous intraepithelial lesion (ASC-H) on ThinPrep Pap tests. This study reports on the association of HCG's with high grade squamous intraepithelial lesions (HSIL) involving endocervical glands.
Over a 3-year period (January 1, 2018-December 31, 2020), 115 (0.2%) of 63,817 Pap tests were diagnosed as ASC-H. Histologic follow-up was available in 76 (66%) cases; 42 (55%) cervical biopsies; and 34 (45%) cervical cones/LEEPs.
Based on the histologic results, 49 ASC-H cases showed HSIL/CIN 3 and form the basis of this study. ThinPrep Pap tests showed two cell patterns; atypical immature squamous metaplastic cells and HCGs, each of which was difficult to distinguish from HSIL. On histologic correlation all 10 ASC-H Pap Tests with individual atypical immature squamous metaplastic cells showed HSIL/CIN 3 without endocervical gland involvement and 37 (95%) of the 39 Pap Tests with HCGs showed HSIL/CIN 3 with endocervical gland involvement.
The results of this study support the premise that a subset of HCGs represent endocervical gland involvement by HSIL as opposed to a glandular lesion; in particular endocervical adenocarcinoma in-situ.
巴氏涂片检查中出现的浓染拥挤细胞团(HCG)常被归类为非典型鳞状细胞,不能排除高级别鳞状上皮内病变(ASC-H)。本研究报告了 HCG 与累及宫颈腺体的高级别鳞状上皮内病变(HSIL)之间的相关性。
在 3 年期间(2018 年 1 月 1 日至 2020 年 12 月 31 日),63817 例巴氏涂片检查中有 115 例(0.2%)诊断为 ASC-H。76 例(66%)患者有组织学随访结果;其中 42 例进行了宫颈活检,34 例进行了宫颈锥切术/环形电切术(LEEP)。
根据组织学结果,49 例 ASC-H 病例显示为 HSIL/CIN3,这是本研究的基础。液基薄层细胞学检查显示两种细胞模式;非典型不成熟鳞状化生细胞和 HCG,两者均难以与 HSIL 区分。组织学相关性研究显示,10 例 ASC-H 巴氏涂片检查中,每例均有单个非典型不成熟鳞状化生细胞,均显示为 HSIL/CIN3,且无宫颈腺体受累;39 例巴氏涂片检查中有 HCG 的病例中,有 37 例(95%)显示 HSIL/CIN3 并伴有宫颈腺体受累。
本研究结果支持这样一个前提,即 HCG 的一部分代表 HSIL 累及宫颈腺体,而不是腺上皮病变;特别是宫颈原位腺癌。