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Updated: Aug 11, 2026
09:31
Orthotopic Implantation and Peripheral Immune Cell Monitoring in the II-45 Syngeneic Rat Mesothelioma Model
Published on: October 2, 2015
Pulmonary adenocarcinoma simulating malignant mesothelioma
P Tang1, S K Vatsia, S Teichberg
1Department of Pathology, North Shore University Hospital-New York University School of Medicine, Manhasset, NY 11030, USA.
Archives of Pathology & Laboratory Medicine
|December 12, 2001
Summary
Lung adenocarcinoma with pleural involvement can mimic mesothelioma. Immunohistochemical and electron microscopic studies are crucial for accurate diagnosis, distinguishing between these similar-appearing tumors.
Area of Science:
- Oncology
- Pathology
- Pulmonology
Background:
- Pleural involvement by lung adenocarcinoma often presents diagnostic challenges, mimicking epithelioid mesothelioma.
- Distinguishing between these two malignancies is critical for appropriate patient management and treatment strategies.
Observation:
- A case is presented where lung adenocarcinoma with pleural spread exhibited features on hematoxylin-eosin staining that were indistinguishable from epithelioid mesothelioma.
- Initial microscopic examination alone was insufficient for definitive diagnosis.
Findings:
- Immunohistochemical analysis was essential in correctly identifying the tumor as adenocarcinoma.
- Electron microscopic examination further supported the diagnosis by revealing ultrastructural features specific to adenocarcinoma, not mesothelioma.
Implications:
- This case highlights the importance of utilizing advanced diagnostic techniques, including immunohistochemistry and electron microscopy, in the differential diagnosis of pleural tumors.
- Accurate differentiation is vital for selecting targeted therapies and improving outcomes for patients with lung adenocarcinoma and suspected mesothelioma.
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