Introduction: Intraductal carcinoma is often associated with high-grade, high-stage adenocarcinoma. Its frequency is variable and it is considered a poor prognostic factor. In our context, when prostatic carcinoma is ...Introduction: Intraductal carcinoma is often associated with high-grade, high-stage adenocarcinoma. Its frequency is variable and it is considered a poor prognostic factor. In our context, when prostatic carcinoma is diagnosed, pathologists do not always report the presence of this anatomopathological entity. We therefore conducted a study to determine the epidemiological and anatomopathological profile of patients with this lesion in Dakar. Materials and Methods: This is a retrospective descriptive study covering a 1-year period from January to December 2022. It focused on cases of intraductal carcinoma diagnosed among prostatic carcinomas collected in the anatomopathology laboratories of Hôpital Général Idrissa Pouye (HOGIP) and Hôpital Militaire de Ouakam (HMO). It was based on archives of anatomopathological reports, blocks and slides. A total of 200 cases of prostatic carcinoma were collated and reviewed to identify those presenting with intraductal carcinoma according to the diagnostic criteria of Guo and Epstein. Results: 87 cases of intraductal carcinoma were found, representing 43.5% of prostatic carcinomas. The mean age was 71 years. Patients in their seventh decade were the most represented, i.e. 42.5%. The majority of samples examined were biopsies (72.4%). The mean PSA level was 965.91 ng/ml, with extremes ranging from 0.03 to 10,000 ng/ml. Histologically, 96.5% of cases (N = 84) were invasive prostatic carcinoma. Gleason score 8 (4 + 4) was the most common, accounting for 42.53% (N = 37). On average, the study found four (04) foci of intraductal carcinoma per specimen, with extremes ranging from 1 to 30. Dense cribriform architecture accounted for 78.16%, loose cribriform for 11.5%, solid for 8.04% and micropapillary for 2.3%. Six cases (6.9%) showed foci of comedonecrosis. The vast majority of radical prostatectomies (87.5%) were classified as pT3. Node invasion and perineural sheathing were observed in 12.5% and 52.32% of cases respectively. Conclusion: Intraductal carcinoma is a poor prognost展开更多
目的探讨前列腺孤立性导管内癌(isolated intraductal carcinoma of the prostate,iIDC-P)的临床病理特征、分子改变、鉴别诊断及预后。方法回顾性收集宁波市临床病理诊断中心2016—2022年间的3例iIDC-P的临床病理学资料,进行光镜观察...目的探讨前列腺孤立性导管内癌(isolated intraductal carcinoma of the prostate,iIDC-P)的临床病理特征、分子改变、鉴别诊断及预后。方法回顾性收集宁波市临床病理诊断中心2016—2022年间的3例iIDC-P的临床病理学资料,进行光镜观察、免疫组织化学染色、高通量DNA靶向测序及随访,并复习相关文献。结果例1~3患者年龄分别为61、67、77岁,术前总前列腺特异性抗原(TPSA)水平分别为7.99、7.99、4.86μg/L。例1和例2包含前列腺穿刺和根治标本,例3为经尿道前列腺电切标本。镜下:例1穿刺标本仅1条组织见导管内癌(累及2个导管)、根治标本其中6张切片见导管内癌(病灶直径0.3~1.1 cm),其中1张切片见小灶低级别腺泡腺癌(病灶直径0.05 cm)。例2穿刺标本6条组织见导管内癌,根治标本其中13张切片见导管内癌(病灶直径0.5~1.6 cm),另外3张切片可见低级别腺泡腺癌(最大病灶直径0.6 cm)。例3电切标本其中5条组织见导管内癌。例1和例2导管内癌呈实性生长,导管-腺泡显著膨胀,核显著异型;例3呈致密筛状或疏松筛状结构,核显著异型,核仁明显。例2伴有粉刺样坏死,3例核分裂象均易见。导管内癌免疫表型:双标34βE12+P504s显示基底细胞表达34βE12/异型肿瘤细胞表达P540s,p63和CK5/6显示腺泡/导管周围基底细胞,肿瘤细胞表达NKX3.1、雄激素受体、前列腺特异性抗原、前列腺特异性酸性磷酸酶,不表达GATA3,导管内癌和腺泡腺癌均弱表达PTEN、不表达ERG。高通量DNA靶向测序:例2和例3伴有MAPK/PI3K通路基因改变(KRAS、MTOR和PTEN),例2伴有p53突变、例3伴有FOXA1突变。3例均未发现TMPRSS2::ERG融合,3例均显示微卫星稳定,肿瘤突变负荷低(2.1~3.1 muts/Mb)。随访16~91个月,均无生化复发及远处转移。结论iIDC-P是一种特殊的前列腺导管内癌,不同于伴有高级别前列腺癌的前列腺导管内癌,具有独特的分子改变,可能代表一种特殊类型前展开更多
文摘Introduction: Intraductal carcinoma is often associated with high-grade, high-stage adenocarcinoma. Its frequency is variable and it is considered a poor prognostic factor. In our context, when prostatic carcinoma is diagnosed, pathologists do not always report the presence of this anatomopathological entity. We therefore conducted a study to determine the epidemiological and anatomopathological profile of patients with this lesion in Dakar. Materials and Methods: This is a retrospective descriptive study covering a 1-year period from January to December 2022. It focused on cases of intraductal carcinoma diagnosed among prostatic carcinomas collected in the anatomopathology laboratories of Hôpital Général Idrissa Pouye (HOGIP) and Hôpital Militaire de Ouakam (HMO). It was based on archives of anatomopathological reports, blocks and slides. A total of 200 cases of prostatic carcinoma were collated and reviewed to identify those presenting with intraductal carcinoma according to the diagnostic criteria of Guo and Epstein. Results: 87 cases of intraductal carcinoma were found, representing 43.5% of prostatic carcinomas. The mean age was 71 years. Patients in their seventh decade were the most represented, i.e. 42.5%. The majority of samples examined were biopsies (72.4%). The mean PSA level was 965.91 ng/ml, with extremes ranging from 0.03 to 10,000 ng/ml. Histologically, 96.5% of cases (N = 84) were invasive prostatic carcinoma. Gleason score 8 (4 + 4) was the most common, accounting for 42.53% (N = 37). On average, the study found four (04) foci of intraductal carcinoma per specimen, with extremes ranging from 1 to 30. Dense cribriform architecture accounted for 78.16%, loose cribriform for 11.5%, solid for 8.04% and micropapillary for 2.3%. Six cases (6.9%) showed foci of comedonecrosis. The vast majority of radical prostatectomies (87.5%) were classified as pT3. Node invasion and perineural sheathing were observed in 12.5% and 52.32% of cases respectively. Conclusion: Intraductal carcinoma is a poor prognost
