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Al-Hussaini M, Talia KL, McCluggage WG. Napsin A Immunoreactivity in "Hobnail" Epithelium in Benign Endometrial and Endocervical Polyps. Int J Gynecol Pathol 2024:00004347-990000000-00158. [PMID: 38781161 DOI: 10.1097/pgp.0000000000001037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Endometrial and endocervical polyps not uncommonly exhibit focal benign "hobnail" change/metaplasia within the glandular epithelium, sometimes in association with inflammation or infarction. In most cases, this is readily recognized as benign but occasionally, especially in endometrial polyps, this change prompts consideration of a premalignant or malignant lesion, including early serous or clear cell carcinoma. Herein we highlight the previously unreported phenomenon of positive staining of this hobnail epithelium with Napsin A which has the potential to exacerbate concern for clear cell carcinoma. Endometrial (n = 22) and endocervical (n = 17) polyps showing hobnail change were stained with Napsin A. Six cases were positive (4 of 22 endometrial and 2 of 17 endocervical polyps). In all cases, Napsin A positivity was confined to the hobnail epithelium. The hobnail epithelium was positive with estrogen receptor and hepatocyte nuclear factor 1- beta and exhibited wild-type immunoreactivity with p53 in all cases where these markers were performed. In addition, in 2 of 3 uterine adenosarcomas with focal hobnail change the epithelium was Napsin A positive. Pathologists should be aware that Napsin A may be expressed in benign/reactive hobnail epithelium in endometrial and endocervical polyps and should not consider positivity with this marker as a diagnostic of clear cell carcinoma.
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Affiliation(s)
- Maysa Al-Hussaini
- Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Karen L Talia
- Department of Pathology, Royal Children's Hospital and Royal Women's Hospital, Melbourne, Australia
| | - W Glenn McCluggage
- Department of Pathology, Belfast Health and Social Care Trust, Belfast, United Kingdom
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Travaglino A, Inzani F, Santoro A, Arciuolo D, Piermattei A, Pasquini S, Scaglione G, D’Alessandris N, Valente M, Raffone A, Fanfani F, Zannoni GF. Endometrial Metaplastic/Reactive Changes Coexistent with Endometrial Hyperplasia and Carcinoma: A Morphological and Immunohistochemical Study. Diagnostics (Basel) 2021; 12:diagnostics12010063. [PMID: 35054228 PMCID: PMC8774443 DOI: 10.3390/diagnostics12010063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/21/2021] [Accepted: 12/25/2021] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to assess the relationship between endometrial metaplastic/reactive changes (EMRCs) and endometrial neoplastic lesions. Twenty cases of “simple” (without architecture complexity) EMRCs coexistent with endometrial malignant/premalignant lesions, twenty cases of neoplasia-unassociated EMRCs, and eight cases of complex metaplastic lesions were assessed by immunohistochemistry. EMRCs coexisted with endometrioid carcinoma (n = 12), atypical endometrial hyperplasia (n = 3), serous carcinoma (n = 2), and clear cell carcinoma (n = 3). Neoplasia-associated EMRCs showed a mean Ki67 labeling index of 12.6% (range 0–30%); with nuclear atypia in 16/20 (80%) cases; diffuse p16 expression in 15/20 (75%) cases; and heterogeneous ER, PR, and vimentin expression. Compared to the associated neoplasia, EMRCs showed a lower Ki67 expression (p < 0.001) and higher p16 expression (p < 0.001). No EMRC case showed mitotic activity, PTEN loss, MMR deficiency, nuclear β-catenin, p53-mutant pattern, Napsin A, or AMACR expression. No significant differences were found between neoplasia-associated and neoplasia-unassociated EMRCs. Complex metaplastic lesions showed a lower Ki67 expression than EMRCs (p = 0.044) and PTEN loss in 5/8 cases, even in the absence of nuclear atypia. In conclusion, neoplasia-associated simple EMRCs may show evident atypia and a worrisome immunophenotype, but no data support their involvement in endometrial carcinogenesis. Architectural complexity appears as a crucial factor to identify precancerous lesions.
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Affiliation(s)
- Antonio Travaglino
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
- Pathology Unit, Department of Advanced Biomedical Sciences, Federico II University of Naples, 80131 Naples, Italy
| | - Frediano Inzani
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
- Correspondence: ; Tel.: +39-0630154433
| | - Angela Santoro
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
| | - Damiano Arciuolo
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
- Department of Life Health and Public Health, Catholic University of the Sacred Hearth, 00168 Rome, Italy;
| | - Alessia Piermattei
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
| | - Sandra Pasquini
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
| | - Giulia Scaglione
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
| | - Nicoletta D’Alessandris
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
| | - Michele Valente
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
| | - Antonio Raffone
- Division of Gynecology and Human Reproduction Physiopathology, Department of Medical and Surgical Sciences (DIMEC), IRCCS Azienda Ospedaliero-Univeristaria di Bologna. S. Orsola-Malpighi Hospital, University of Bologna, 40138 Bologna, Italy;
| | - Francesco Fanfani
- Department of Life Health and Public Health, Catholic University of the Sacred Hearth, 00168 Rome, Italy;
- Gynecologic Oncology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
| | - Gian Franco Zannoni
- Gynecopathology and Breast Pathology Unit, Department of Woman and Child’s Health and Public Health Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (A.T.); (A.S.); (D.A.); (A.P.); (S.P.); (G.S.); (N.D.); (M.V.); (G.F.Z.)
- Department of Life Health and Public Health, Catholic University of the Sacred Hearth, 00168 Rome, Italy;
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Santoro A, Travaglino A, Inzani F, Arciuolo D, Angelico G, D'Alessandris N, Scaglione G, Valente M, Martini M, Raffone A, Zannoni GF. Clear cell endometrial carcinoma precursors: presentation of two cases and diagnostic issues. Diagn Pathol 2021; 16:95. [PMID: 34689808 PMCID: PMC8543890 DOI: 10.1186/s13000-021-01154-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/23/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The precursors of clear cell endometrial carcinoma (CC-EC) are still undefined. Here, we deal with the diagnostic issues related to CC-EC precursors by presenting a morphological, immunophenotypical and molecular study of two representative cases and discussing the relevant literature. CASE PRESENTATION Our and previous cases suggest that clear cell endometrial intraepithelial carcinoma (CC-EIC) is a real entity, which may be distinguished from metaplastic/reactive changes and from its serous counterpart. CC-EIC appears associated with atrophic polyps and may be diagnosed based on morphological and immunophenotypical features of CC-EC in the absence of invasive disease. We described a p53-mutant putative precursor characterized by high-grade nuclei in the absence of other distinctive features. Two putative low-grade precursors resembled atypical tubal metaplasia and endometrial intraepithelial neoplasia, although immunohistochemistry could not support their relationship with CC-EC. CONCLUSIONS In conclusion, pathologists should be aware of the existence of CC-EIC, since its correct diagnosis may be crucial for a correct patient management. Although several putative earlier precursors have been described, they does not show univocal features that allow their recognition in the common practice. Further studies are necessary in this field.
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Affiliation(s)
- Angela Santoro
- Unità di Ginecopatologia e Patologia Mammaria, Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168, Roma, Italy
| | - Antonio Travaglino
- Department of Advanced Biomedical Sciences, Pathology Section, School of Medicine, University of Naples "Federico II", Via Sergio Pansini, 5, 80131, Naples, Italy
| | - Frediano Inzani
- Unità di Ginecopatologia e Patologia Mammaria, Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168, Roma, Italy
| | - Damiano Arciuolo
- Unità di Ginecopatologia e Patologia Mammaria, Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168, Roma, Italy
| | - Giuseppe Angelico
- Unità di Ginecopatologia e Patologia Mammaria, Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168, Roma, Italy
| | - Nicoletta D'Alessandris
- Unità di Ginecopatologia e Patologia Mammaria, Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168, Roma, Italy
| | - Giulia Scaglione
- Unità di Ginecopatologia e Patologia Mammaria, Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168, Roma, Italy
| | - Michele Valente
- Unità di Ginecopatologia e Patologia Mammaria, Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168, Roma, Italy
| | - Maurizio Martini
- Division of Pathology, Policlinico Gemelli Foundation, Catholic University of the Sacred Heart, Rome, Italy.,Istituto di Anatomia Patologica, Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168, Roma, Italy
| | - Antonio Raffone
- Gynecology and Obstetrics Unit, Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, Naples, Italy
| | - Gian Franco Zannoni
- Unità di Ginecopatologia e Patologia Mammaria, Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168, Roma, Italy. .,Istituto di Anatomia Patologica, Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168, Roma, Italy.
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Ciscato A, Zare SY, Fadare O. The significance of recurrence in endometrial polyps: a clinicopathologic analysis. Hum Pathol 2020; 100:38-44. [PMID: 32334830 DOI: 10.1016/j.humpath.2020.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 11/30/2022]
Abstract
A subset of endometrial polyps recurs after resection. The clinicopathologic significance of the phenomenon is evaluated herein. Consecutive cases of recurrent polyps (index polyp removed by hysteroscopy-directed polypectomy or by curettage; at least one more polyp diagnosed ≤12 months after) were compared with an age-matched control group of nonrecurrent polyps regarding 15 clinicopathologic features. A total of 107 (5.6%) of the 1908 polyps diagnosed in a sampling specimen during the study period was a recurrence, and 102 (6.9%) of the 1478 patients who were diagnosed with an endometrial polyp in a sampling specimen had at least 1 recurrence. Eighty-six percent of patients with any recurrences had only one recurrence, with a mean duration between the index polyp and the first recurrence of 4.36 months. On univariate analyses, the recurrent polyps were, compared with controls, significantly larger, had a higher stromal mitotic index, and more frequently displayed prominent thick-walled vessels in most fragments of the polyp. However, on Cox regression multivariate analyses, no single clinicopathologic feature was significantly associated with a recurrence. No malignancies were diagnosed during the follow-up of the study and control group patients at median follow-up durations of 23 and 34 months, respectively. In conclusion, the recurrence of an endometrial polyp is relatively uncommon (5.6% of polyps) and does not portend an increased risk of malignancy. We could not identify any clinicopathologic features that conclusively predict a recurrence.
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Affiliation(s)
- Andreas Ciscato
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
| | - Somaye Y Zare
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
| | - Oluwole Fadare
- Department of Pathology, University of California San Diego, La Jolla, CA, USA.
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