Clinical Report: Pathological and Clinical Features of Alveolar Adenoma
Overview
This report presents three cases of alveolar adenoma, a rare benign lung tumor characterized by well-defined nodules. Immunohistochemical analysis revealed consistent CD34 expression in stromal cells and variable CD10 positivity.
Background
Alveolar adenoma is an uncommon benign lung tumor that typically affects individuals aged 40 to 60, with a higher incidence in females. Most patients are asymptomatic, although some may experience respiratory symptoms. Understanding its pathological features is crucial for accurate diagnosis and management.
Data Highlights
Case
Age
Symptoms
Size (mm)
Follow-up
1
31
None
18 x 15
18 months
2
74
None
16
N/A
Key Findings
Alveolar adenomas are composed of well-differentiated cuboidal or flattened alveolar epithelial cells.
Immunohistochemical analysis showed strong CD34 expression in stromal cells across all cases.
CD10 was diffusely positive in stromal cells in two-thirds of the cases.
The tumors exhibited mild atypia with well-differentiated glandular structures.
Surgical removal of the tumor is curative.
Clinical Implications
The identification of specific immunohistochemical markers such as CD34 and CD10 may aid in the diagnosis of alveolar adenoma. Clinicians should consider this tumor in the differential diagnosis of solitary pulmonary nodules.
Conclusion
Alveolar adenoma is a rare benign lung tumor with distinct pathological features that warrant further investigation to enhance diagnostic accuracy.
