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Colloid carcinoma of the lung: Current views
1Department of Pathology, MD Anderson Cancer Center, Houston, Texas.
Seminars in Diagnostic Pathology
|September 21, 2014
Summary
Colloid carcinomas of the lung are rare and require careful classification due to similarities with non-lung tumors. This review clarifies misconceptions and discusses the historical context of these unusual lung neoplasms.
Area of Science:
- Pulmonary Pathology
- Surgical Pathology
- Oncology
Background:
- Colloid carcinomas of the lung are rare neoplasms.
- These tumors share morphologic and immunohistochemical similarities with extrathoracic tumors.
- Recent guidelines may reignite past controversies regarding their classification.
Purpose of the Study:
- To review current concepts of pulmonary colloid carcinomas.
- To provide historical perspective on the classification of these tumors.
- To clarify misconceptions surrounding this rare entity.
Main Methods:
- Literature review of pulmonary colloid carcinomas.
- Analysis of historical and current classification guidelines.
- Comparison of morphologic and immunohistochemical features.
Main Results:
- Colloid carcinomas present diagnostic challenges due to resemblance to non-pulmonary tumors.
- The World Health Organization (WHO) has previously categorized them as common adenocarcinomas.
- Proposed new guidelines may reintroduce debate on their distinct entity status.
Conclusions:
- Accurate coding as primary pulmonary tumors is crucial.
- Understanding the historical context is essential for resolving classification issues.
- Further clarification is needed to address ongoing controversies in the diagnosis of lung colloid carcinomas.
