Abstract:
BACKGROUND:Differentiated squamous intraepithelial lesion (dSIL) is morphologically and immunohistochemically analogous in the whole anogenital region. dSIL is a premalignant lesion frequently misinterpreted histopathologically as a benign dermatosis. The authors describe a peculiar change in the basal cell layer of the epidermis/epithelium overlying anogenital melanocytic nevi that may histopathologically imitate dSIL. The aim of this study is to familiarize the pathologists with this pitfall to avoid its possible overdiagnosis as dysplasia. Further, we tried to explore the biological characteristics of the dSIL-like changes and to focus on the differential diagnostic aspects. DESIGN:Seventy cases of anogenital nevi were retrieved from our registry. All cases were stained with hematoxylin and eosin (H&E) and reviewed. Cases in which the epidermis overlying nevi featured atypical appearing basal keratinocytes in otherwise fully differentiated epithelium, variable degrees of acanthosis and parakeratosis were selected for additional investigation. RESULTS:Thirty cases meeting the above described criteria were identified. The patients were 8 males and 22 females, with age at the time of diagnosis ranging from 4 to 68years. Follow-up data were available for 28 patients (range 0.5-19years, mean 5.1), and to date, no signs of epithelial malignancy have been recorded. Immunohistochemically (IHC), the epidermis overlying nevi showed insignificant positivity for p53 in all tested cases. Melanocytic markers (S-100 protein, SOX10, Melan A) and cytokeratin AE1/3 labeled melanocytes and keratinocytes, respectively, enabling their distinction, especially in nevi featuring a junctional component. CONCLUSIONS:Differentiated squamous intraepithelial lesion-like changes seem to occur relatively often in the epidermis overlying anogenital melanocytic nevi. Since morphologically they are virtually identical to the "true" dSIL, their distinction largely depends on p53 expression in basal keratinocytes with normal p53 expression in dSIL-like changes and diffuse nuclear/p53-null immunostaining in the "true" dSIL serving as an essential differential diagnostic tool. dSIL-like alterations seem to have no malignant potential, as to date, none of the patients included in this study have shown any signs of epithelial malignancy.
journal_name
Ann Diagn Patholjournal_title
Annals of diagnostic pathologyauthors
Michalova K,Kazakov DV,Michal M,Hadravsky L,Kacerovska D,Rychly B,Miesbauerova M,Michal Mdoi
10.1016/j.anndiagpath.2016.11.002subject
Has Abstractpub_date
2017-02-01 00:00:00pages
43-46eissn
1092-9134issn
1532-8198pii
S1092-9134(16)30308-2journal_volume
26pub_type
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
pub_type: 杂志文章,评审
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journal_title:Annals of diagnostic pathology
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doi:10.1016/j.anndiagpath.2005.03.006
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journal_title:Annals of diagnostic pathology
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abstract::We present clinicopathological and molecular cytogenetic features of five rare cases of Ewing sarcomas, occurring in the female genital tract. A 40 year-old lady presented with a 5.4 cm-sized vaginal mass of 3 months duration, which was histopathologically diagnosed as ES. She defaulted chemotherapy and 8 months later...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
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abstract:INTRODUCTION:Hydatid disease is an endemic parasitic infection caused by Echinococcus granulosus mostly seen in the Mediterranean countries. The most affected organ is the liver, however hydatidosis can be found anywhere in the human body. METHODS:The records of patients who were diagnosed with hydatid disease in our ...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2017.01.011
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