Pseudomesotheliomatous carcinoma involving pleura and peritoneum: A clinicopathologic and immunohistochemical study of three cases
| Autor: | Thomas Kummet, Leslie A. Wheeler, Ifat A. Shah, Osama S. Gani, Joseph R. Salvatore |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Male
Mesothelioma Pathology medicine.medical_specialty Pleural effusion Pleural Neoplasms Pathology and Forensic Medicine Carcinoembryonic antigen Peritoneum Antigens Neoplasm medicine Adenocarcinoma of the lung Carcinoma Biomarkers Tumor Humans Peritoneal Neoplasms Aged Glycoproteins Lung biology business.industry General Medicine Middle Aged medicine.disease Immunohistochemistry respiratory tract diseases Desmoplasia medicine.anatomical_structure Antigens Surface biology.protein medicine.symptom business |
| Zdroj: | Annals of diagnostic pathology. 3(3) |
| ISSN: | 1092-9134 |
| Popis: | Pseudomesotheliomatous carcinoma is a rare variant of peripheral adenocarcinoma of the lung that can manifest clinical, radiologic, and pathologic features similar to malignant mesothelioma. We present three patients with pseudomesotheliomatous carcinoma of the lung. In one patient the carcinoma extended beyond the thorax and extensively involved the peritoneum, mesentery, omentum, and intestines. All patients experienced weight loss and chest pain. All were white men aged 63, 65, and 67 years. Two were smokers and had shortness of breath, cough, and pleural effusion. One had a history of asbestos exposure. No patient developed dyspnea or hemoptysis. One was successfully treated for prostatic carcinoma 18 months earlier. Radiographically, all tumors were pleura-based. Grossly, the tumors spread extensively over pleural (and in one case peritoneal) surfaces and mimicked malignant mesothelioma. Histologically, all tumors were poorly differentiated and necrotic; two tumors exhibited spindle-cell components and desmoplasia. Mucin production was detectable in none, 10%, and 50% of tumor cells. The percentages of tumor cells immunoreactive for Ber-EP4 were 70%, 100%, and 80%; for Leu MI 0%, 90%, and 50%; for epithelial membrane antigen 80%, 80%, and 100%; for B 72.3%, 0%, 90%, and 20%; for polyclonal carcinoembryonic antigen 0%, 10%, and 10%; and for monoclonal 5%, 0%, and 0%. Of these, Ber-EP4 and B 72.3 rendered the most reliable diagnostic results. The clinical, radiologic, and gross and routine histologic findings were similar to those of a malignant mesothelioma; the final diagnosis could be made based mainly on immunocytochemical results. We have reviewed the English and German literature regarding 65 such tumors and present our experience with three additional cases. We emphasize the application of immunocytochemical studies on pleura-based poorly or undifferentiated malignant tumors of unknown origin. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect