A comparison of mast cells in skin biopsies of cutaneous mastocytosis with other inflammatory dermatoses: A study of 33 cases

IF 1.6 4区医学 Q3 DERMATOLOGY

Journal of Cutaneous Pathology Pub Date : 2024-07-30 DOI:10.1111/cup.14698

Margaret M. Parham MD, Bhuvaneswari Krishnan MD, Yve T. Huttenbach MD

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Abstract

Background

Histopathologic criteria for diagnosis of cutaneous mastocytosis include 20 mast cells per high-power field or clusters of 15 mast cells. We aimed to determine the specificity of these criteria for cutaneous mastocytosis in comparison with inflammatory disorders of mast cell activation.

Methods

Twenty-six cases of spongiotic dermatitis or urticaria were identified from 2021 to 2022. Recuts were stained with mast cell tryptase and slides were reviewed for the presence of 20 mast cells per high-power field and for clusters of 15 mast cells. In addition, seven cases of mastocytosis were reviewed for the same criteria.

Results

Twelve of 26 cases (46.1%) of spongiotic dermatitis/urticaria had at least 20 mast cells per high-power field. Three of 26 cases (11.5%) of spongiotic dermatitis/urticaria had a cluster of 15 mast cells. Six of seven cases (85.7%) of mastocytosis had at least 20 mast cells per high-power field; four of seven cases (57.1%) of mastocytosis had a cluster of 15 mast cells.

Conclusions

In our study, the finding of 20 mast cells per high-power field was nonspecific as a single criterion for cutaneous mastocytosis. The finding of clusters of 15 mast cells was more specific but not sensitive.

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皮肤肥大细胞增多症与其他炎症性皮肤病皮肤活检中肥大细胞的比较：对 33 个病例的研究。

背景：皮肤肥大细胞增多症的组织病理学诊断标准包括每个高倍视野中有 20 个肥大细胞或 15 个肥大细胞簇。我们旨在确定这些标准与肥大细胞活化炎症性疾病相比，对皮肤肥大细胞增多症的特异性：从 2021 年到 2022 年，共发现 26 例海绵状皮炎或荨麻疹病例。用肥大细胞胰蛋白酶对切片进行染色，并对切片进行复查，以确定每个高倍视野中是否存在 20 个肥大细胞，以及是否存在 15 个肥大细胞簇。此外，还按照同样的标准对 7 例肥大细胞增多症病例进行了复查：结果：26 例海绵状皮炎/荨麻疹病例中有 12 例（46.1%）每个高倍视野至少有 20 个肥大细胞。26例海绵状皮炎/荨麻疹病例中有3例（11.5%）有15个肥大细胞集群。7例肥大细胞增多症中的6例（85.7%）每个高倍视野至少有20个肥大细胞；7例肥大细胞增多症中的4例（57.1%）有15个肥大细胞群：在我们的研究中，每个高倍视野发现 20 个肥大细胞作为皮肤肥大细胞增多症的单一标准是非特异性的。发现 15 个肥大细胞簇更具特异性，但不敏感。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Cutaneous Pathology 医学-病理学

CiteScore

3.20

自引率

5.90%

发文量

174

审稿时长

3-8 weeks

期刊介绍： Journal of Cutaneous Pathology publishes manuscripts broadly relevant to diseases of the skin and mucosae, with the aims of advancing scientific knowledge regarding dermatopathology and enhancing the communication between clinical practitioners and research scientists. Original scientific manuscripts on diagnostic and experimental cutaneous pathology are especially desirable. Timely, pertinent review articles also will be given high priority. Manuscripts based on light, fluorescence, and electron microscopy, histochemistry, immunology, molecular biology, and genetics, as well as allied sciences, are all welcome, provided their principal focus is on cutaneous pathology. Publication time will be kept as short as possible, ensuring that articles will be quickly available to all interested in this speciality.