Histologic Correlation and Clinical Significance of Atypical Glandular Cells on Cervical Pap Tests: Analysis of 540 Cases at a Single Institution

Clinical significance of atypical glandular cells on cytology: 10 years' experience of a colposcopic referral center

INTRODUCTION

'Atypical glandular cells' (AGC) is an uncommon cytological result of cervical Pap smears which includes a wide of histopathological diagnoses, from benign to premalignant and malignant cervical disorders, endometrial cancer and, occasionally, other genital malignancies. This study aims to provide a comprehensive overview of AGC, assessing risk factors and clinical and histological features in affected patients.

MATERIALS AND METHODS

A retrospective analysis was conducted on a cohort of 239 women diagnosed with AGC between 2012 and 2022 at the 'Regional Referral Center for Prevention, Diagnosis and Treatment of HPV-related Genital Disorders', Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Following AGC detection, patients underwent colposcopy with endocervical sampling and endometrial assessment via pelvic ultrasound. Selective cases also received endometrial biopsies.

RESULTS

Among a total of 190 women who underwent both colposcopy and endometrial assessment, 116 (61%) had negative clinical and histopathological findings. The remainder displayed various abnormalities: 36 women (18.9%) were found to have endometrial or cervical polyps, 23 (12.1%) were diagnosed with preinvasive cervical neoplasia, and 21 (10.9%) with invasive cervical or endometrial disease. Menopause, multiparity, and older age were all significantly associated with endometrial cancer, but none of the abovementioned variables were significantly associated with cervical neoplasia.

CONCLUSION

Our data confirm that AGC may reveal the presence of a wide range of histopathological conditions. Patients diagnosed with AGC should undergo a careful evaluation including both colposcopy with endocervical sampling and an endometrial assessment.

Clinical Diagnostic Value of Atypical Glandular Cells in Cervical Cytology: A Single Center Experience From China

OBJECTIVE

This study aimed to investigate the diagnostic value of atypical glandular cells (AGCs) by analyzing the prevalence and histopathology of AGCs according to cervical cytology.

METHODS

The authors retrospectively reviewed and analyzed the demographic characteristics and histopathological outcomes including pathological diagnosis, pathological site, and epithelial distribution of the AGC cases that were diagnosed by cervical cytology.

RESULTS

A total of 387 AGC patients with follow-up records were included. Among them, the prevalence of AGC-not otherwise specified (NOS) and AGC-favor neoplastic (FN) was 73.39% (284/387) and 26.62% (103/387), respectively. The high-risk human papillomavirus (hr-HPV)-positive rate was higher in AGC-FN than in AGC-NOS ( p = .002). The difference in pathological severity was statistically significant between hr-HPV-positive and negative AGC patients ( p = .010). Hr-HPV-positive AGC mainly occurs in cervical diseases, whereas hr-HPV-negative AGC is mainly related to endometrial lesions. Precancerous or malignant lesions were found in 36.43% (141/387) of AGC cases and were more commonly seen in AGC-FN than AGC-NOS ( p < .001). The histopathological severity and the incidence of uterine disease were higher among AGC women aged 40 years and older than those younger than 40 years ( p < .05). The possibility of the abnormal origin of glandular epithelial was higher than that of squamous epithelial in AGC patients aged 40 years and older ( p = .0003).

CONCLUSIONS

The management of AGC women by age triage is reasonable because the incidence of the glandular epithelial lesion and uterine disease increases in AGC patients 40 years or older. Standardized clinical diagnosis and regular follow-up are recommended for all AGC patients.

Factors Affecting the Histopathological Outcomes of Atypical Glandular Cells on Pap Test

Background:

Glandular cell abnormalities may indicate the presence of pre-malignant or malignant lesions.

Aim:

This study aimed to investigate the relationship between atypical glandular cells (AGC) and patients' demographics, histopathological outcomes, Human Papillomavirus (HPV) test results.

Material and Methods:

Between January 2015 and December 2019, women with AGC on Pap tests were retrieved from the hospital electronic database. The patients with AGC on cervicovaginal smears who underwent further pathological, laboratory, and imaging diagnostic testing and who were followed up at least 1-year were included in the study, while those who had a history of cervical dysplasia or cancer, lost during follow-up, or had missing data were excluded.

Results:

Of 85,692 Pap smears, 114 (0.13%) were diagnosed with AGC, of those 88 cases were eligible for final analysis. Gynecological malignancies were detected in 13 (14.8%) patients; including 6 (6.8%) endometrioid endometrial cancers, 3 (3.4%) non-endometrioid endometrial cancers, 2 (2.3%) cervical adenocarcinomas, 1 (1.1%) cervical squamous cell carcinoma, and 1 (1.1%) high-grade tubal serous cancer. Multivariate analysis revealed that presence of concomitant abnormal squamous lesion (P = 0.002), being 50 years and older (P = 0.028), HPV positivity (P < 0.001), and menopause (P = 0.023) were risk factors for significant pathology.

Conclusion:

The diagnosis of AGC may be related to the preneoplastic/neoplastic processes. A further comprehensive histopathological examination is required in women with AGC, aged 50 years and older, postmenopausal, HPV-positivity and concomitant squamous cell abnormality Clinicians should consider ovarian pathologies when there is no pathological finding on endometrial or cervical histopathological examination.

Cervical glandular neoplasia referrals and the diagnosis of adenocarcinoma in situ: Correlating cytology, colposcopy findings, and clinical outcomes

OBJECTIVES

To determine the clinical outcomes of women with possible glandular neoplasia of endocervical type on cervical cytology, and review all diagnoses of cervical adenocarcinoma in situ (AIS) over a 5 year period at our institution.

STUDY DESIGN

A retrospective case-note review was conducted of all women referred to colposcopy with possible glandular neoplasia of endocervical type on cervical cytology or diagnosed with cervical AIS after biopsy or excision, from January 2014 until December 2018 in a London district hospital.

RESULTS

Of 55 women referred with possible glandular neoplasia of endocervical type, 47 (85.4%) had a significant pathology on histopathological analysis: AIS (n = 22); invasive cancer (n = 7); high-grade cervical intraepithelial neoplasia (n = 18). Women with a history of borderline abnormality on cervical cytology within the last 5 years were significantly more likely to be diagnosed with AIS or invasive cancer (P < .05). For the same period 49 women had histologically proven AIS. Among these 22 (44.8%) were referred as possible cervical glandular intraepithelial neoplasia. Other reasons for referral were the following indications: borderline dyskaryosis (n = 13); high-grade dyskaryosis (n = 8); low-grade dyskaryosis (n = 4); postcoital bleeding (n = 2).

CONCLUSION

Due to the raised risk of significant gynaecological pathology in women with possible glandular neoplasia of endocervical type on cervical cytology, excisional biopsy is essential. Colposcopic impression varies significantly and complete excision of the abnormal lesions should be achieved. AIS is a histological diagnosis and should always be considered during colposcopical and cytopathological assessment.

Atypical glandular cells in Papanicolaou test: Which is more important in the detection of malignancy, architectural or nuclear features?

OBJECTIVE

Atypical glandular cells (AGCs) in Pap (Papanicolaou) smears are uncommon but may represent various benign and malignant lesions. The aim of this study was to evaluate the AGC incidence in Pap smears, analyse the relationship between AGC and malignancy, and reveal the importance of architectural and nuclear features observed cytologically in malignancies.

METHODS

Patients diagnosed with AGC on the basis of cervicovaginal cytology between May 2011 and July 2018 were included in this study. All slides were retrospectively reviewed and subclassified according to the Bethesda 2001 classification system. The cytomorphological features observed in the smears were recorded. Cytohistological correlations were evaluated, and the significant clinicopathological findings for malignancy were determined.

RESULTS

Of 87 536 Pap smears, 195 (0.22%) had AGC results and 156 had tissue follow-up. Among the 156 smears with AGC, 80 (51.3%) were diagnosed as AGC-NOS (atypical glandular cells, not otherwise specified) and 76 (48.7%) as AGC-FN (atypical glandular cells, favour neoplastic). Follow-up biopsies revealed benign pathologies in 49 cases (31.4%) and malignant pathologies in 107 (68.6%). The rate of malignancy observed in AGC-FN cases (89.5%) was higher than the rate of malignancy in AGC-NOS cases (48.8%). Among the cytomorphological features, nuclear irregularity, presence of macronucleoli, feathering, loss of polarity, papillary pattern, and three-dimensional formation were found to be significant indicators of malignancy.

CONCLUSION

As AGC in Pap smear was associated with a clinically significant diagnosis in 68.6% of the cases in our study, we suggest that all patients with AGC should undergo further clinical assessment.

The impact of HPV-specific infection in women diagnosed with atypical glandular cells: Results from the HPV-AGC study

OBJECTIVE

To evaluate the impact of various HPV types on the risk of developing lesions of the uterus (either uterine cervix and endometrium) in women diagnosed with "atypical glandular cells" (AGC) at Pap smear.

METHODS

This is a multi-institutional retrospective study. Data of women diagnosed with AGC were retrospectively reviewed. All patients included had data about HPV DNA testing and 1-year clinical follow-up.

RESULTS

Overall, chart of 480 patients were evaluated. After the exclusion of 286 patients, data of 194 patients were available for the analysis. Mean age was 43.9 (±6.0) years. HPV infection was documented in 136 women (70.1 %). Among HPV positive patients the risk of having/developing a lesion was 33.8 % (n = 46). Lesions included low- (L-SIL) and high- (H-SIL) squamous intraepithelial lesions, in situ adenocarcinoma of the uterine cervix, invasive cancer of the uterine cervix, endometrial hyperplasia and endometrial cancer in 16 (11.7 %), 18 (13.2 %), 6 (4.4 %), 3 (2.2 %), 2 (1.5 %) and 1 (1%), respectively. Among HPV negative patients the risk of having/developing a lesion was 15.5 %. They included l-SIL, H-SIL, in situ adenocarcinoma, endometrial hyperplasia and endometrial cancer in 1 (1.7 %), 1 (1.7 %), 1 (1.7 %), 3 (5.1 %) and 3 (5.1 %), respectively. Patients diagnosed with HPV16 were at higher risk of having/developing cervical lesions in comparison to patients with other HPV infections (p < 0.01). In comparison to other HPV types, the presence of HPV 18, 31, 33, and 45 did not increase the risk of developing a lesion over the time (p > 0.2). HPV positive patients were at higher risk of being diagnosed with a cervical lesion within 6 months from detection of AGC.

CONCLUSIONS

Patients diagnosed with AGC are at risk to have / developing cervical and uterine lesions. Further prospective evidence is needed.