图片: | |
---|---|
名称: | |
描述: | |
alex20092009 离线
这里有一篇关于P16与宫颈病变的文献。
Pathology. 2008 Jun;40(4):335-44. Diagnostic utility of p16INK4a: a reappraisal of its use in cervical biopsies.Mulvany NJ, Allen DG, Wilson SM. Department of Anatomical Pathology, Austin Hospital, Heidelberg, Vic 3084, Australia. nicholas.mulvany@austin.org.au Abstractp16(INK4a), an indirect marker of cell cycle dysregulation, is commonly expressed in cervical dysplasias and carcinomas associated with high risk human papillomavirus (HR-HPV) infections. Although p16(INK4a) immunohistology is routinely used as a cost effective surrogate marker, many of the published articles are confusing and contradictory. The discrepancies can be ascribed to a multitude of factors operating at the molecular, technical and interpretative levels. In the first place, our simplistic model of viral mediated oncogenesis is speculative and fails to account for all the known biomolecular changes. Unresolved technical issues include the variables of tissue fixation, antibody dilution, antibody isotype and clone, and the sensitivity of the particular detection method. Within any controlled staining method, strong diffuse or 'block' immunoreactivity in squamous cells may be found in moderate/severe dysplasia (CIN 2/3) and invasive squamous carcinoma. In contrast, focal or multifocal reactivity in squamous cells may be artefactual, related to low risk or HR-HPV. p16(INK4a) is less reliable when dealing with glandular lesions since considerable overlap exists between reactive and dysplastic lesions. In addition not all glandular dysplasias/carcinomas are HR-HPV related, nor are all p16(INK4a) immunoreactive lesions associated with HR-HPV. We conclude that p16(INK4a) immunoperoxidase shows greater specificity than sensitivity for squamous lesions; in comparison, glandular dysplasias/carcinomas show reduced specificity and sensitivity. Like all cell cycle regulatory proteins, the future diagnostic role of p16(INK4a) is limited. The ideal diagnostic molecular test for cervical dysplasias will detect a HR-HPV related product after, but not before, cell transformation and will reliably predict those cases yet to experience disease progression. |
I feel difficult to give my impression for this case.
Stain results for P16 and Ki67 is consistent with dx of high grade dysplasia, but the cytomorphologic features on H&E are not like classic high grade dysplasia. I favor a dx of CIN2 based on IHC and H&E. However I need to review the true glass for diagnosis.
If luo zhu is not sure, can send out for consultation.
Other suggestions:
1. Dx of CIN1-2 is a bad call. Pathologists should avoid to use the diagnostic term. If patients have both cin1 and cin2, it is fine that you call:
-CIN2.
-CIN1. (of cause it is fine you do not report cin1 if you report cin2 or cin3 already.
Or focal cin2 in the background of CIN1 if cin2 is focal.
If is ok you report CIN2-3 together.
2. For CIN lesion, HPV testing is not used for diagnosis
This is my study result
Histological Follow-up Findings in Adolescents with HSIL Cytology Results
Arch Path Lab Med in print.
Magee Womens Hospital, UPMC,
Abstract:
Introduction:
The incidence of cervical intraepithelial lesions is increased in adolescents and reflects the high prevalence of hrHPV infection in this special population. Recent follow-up guidelines emphasize conservative follow-up options. Furthermore, data from cohort studies suggest that regression of both low grade and high grade CIN are quite frequent in very young women. In this study we analyzed histological follow-up data for adolescent women who had HSIL cytology reports. We also assessed the effect of presence or absence of an adequate TZ/ECS in liquid-based Pap tests on the follow-up biopsy diagnoses.
Materials and methods:
The computerized records of a large academic women’s hospital were searched for cases reported as HSIL on TPPT in women age 20 or younger over a 6 year span between January 2002 and December, 2007. Histologic and Pap follow-up results, variations among age groups of adolescent women, and impact of presence or absence of TZ/ECS in Pap test were analyzed. Chi-Square test analysis was performed using SAS 9.1 System.
Results:
During the study period a total of 474 women age 20 or younger had HSIL Pap test results. 335 adolescent women with at least one cervical biopsy with or without endocervical curettage were included in the analysis. The average age was 18.6 years (13-20 years). The average follow-up period was 24 months (0 to 75 months) with a median of 22 months. The overall histologic CIN2/3 and detection rate was 44.2% and 47.8% for CIN1. The average period between the HSIL Pap test and an initial diagnosis of CIN2/3 was 5 months (0-62 months) with a median 2 months. The rates for histologic documentation of CIN in women age 19-20 compared to younger women were not statistically different. Detailed histologic findings are shown in Table 1. No invasive carcinomas or adenocarcinoma in situ cases were identified in this series of adolescents. The percentage of CIN 2/3 diagnosed on histologic follow up was not statistically significantly different when comparing women with and without a TZ/ECS in their preceding HSIL Pap tests (44.5% vs. 38.9%, p=0.642).
Conclusion:
Less than half of adolescent patients with HSIL cytology results had documented histologic CIN2/3 over an average follow-up period of 24 months, and no cases of invasive carcinoma were identified. CIN1 histologic follow-up findings were as common as CIN2/3 findings, likely reflecting both the increased likelihood of HSIL regression in younger women as well as the challenges of precise cytologic and histologic classification. High rates of hrHPV infection, only moderate rates of histologic CIN2/3 following HSIL cytology, and absence of invasive carcinoma all mark the adolescent group as a unique subset of patients deserving further study. Identification of additional biomarkers for HSIL progression would be useful.
Histologic Follow-up Finding in Adolescent Women with HSIL Cytology | ||||
Age (y) |
F/U No |
Negative (%) |
CIN 1 (%) |
CIN 2/3 (%) |
19-20 |
199 |
13 (6.5) |
94 (47.2) |
92 (46.2) |
<19 |
136 |
14 (10.3) |
66 (48.5) |
56 (41.2) |
Total |
335 |
27 (8.1) |
160 (47.8) |
148 (44.2) |