Clinicopathological characteristics of alveolar adenoma
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By
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Jing Chen
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Zhengjin Liu
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Wei Zheng
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Huiling Chen
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Zeyang Lin
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Zhe Li
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June 2, 2026
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Objective:
To present the characteristics of alveolar adenoma by describing three cases.
Key Findings:
- Alveolar adenomas are well-defined tumors composed of well-differentiated cuboidal or flattened alveolar epithelial cells.
- The tumors exhibit glandular or cystic structures and a well-differentiated spindle cell stroma.
- Immunohistochemical analysis showed strong CD34 expression in stromal cells across all cases, with CD10 positivity in about two-thirds.
Interpretation:
Limitations:
- The study is based on a limited number of cases.
- Molecular testing on the stromal component was not conducted.
Conclusion:
