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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    International journal of clinical oncology 5 (2000), S. 54-56 
    ISSN: 1437-7772
    Keywords: Key words Breast cancer ; Pneumothorax ; Metastatic lung cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a rare case of pneumothorax caused by metastatic carcinoma of the breast, in a 69-year-old woman who was admitted to our hospital with severe chest pain. Four years previously, she had undergone modified radical mastectomy for a left breast tumor. Chest X-ray examination and computed tomography (CT) scan on current admission revealed right pneumothorax and bilateral pulmonary tumors. Although operation is not usually indicated in such circumstances, the patient had persistent air leakage for 7 days, despite receiving effective closed cather drainage, making right thoracotomy necessary. During the operation, an open bronchopleural fistula in the metastatic tumor of the upper lobe, infiltrating close to the visceral pleura, was observed. Wedge resection, including the necrotic tumor, was thus performed. Microscopic examination of the resected specimen showed poorly differentiated adenocarcinoma, consistent with metastasis from breast carcinoma. This is the second reported case of pneumothorax caused by metastatic carcinoma of the breast.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2307
    Keywords: Key words VEGF ; Angiogenesis ; Mast cell ; Macrophage ; Laryngeal squamous cell carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We investigated the expression of vascular endothelial growth factor (VEGF) and microvascular density in 54 cases of invasive laryngeal squamous cell carcinoma (SCC) and in ten samples of normal laryngeal tissue using immunohistochemistry methods. The study also focused on the distribution of mast cells in and around the SCCs. The microvascular density in laryngeal carcinoma tissue was higher than that in normal tissue (P=0.02). VEGF was localized in SCCs, stromal cells, endothelial cells, minor salivary glands, and non-cancer epithelium adjacent to the tumor. VEGF expression in the tumor cells was found in 13 of 54 cases (24.1%), whereas mast cells around the carcinomas were VEGF positive in all 54 cases. Staining of VEGF in SCCs was strong in the area of high microvascular density (P=0.0002). Using a multi-labeling subtraction immunostaining method, VEGF-positive stromal cells were classified mostly as mast cells and, in a few instances, as macrophages. VEGF staining in SCCs was associated with the mast cell count (P=0.0001). There was no distinct correlation between VEGF expression and pTNM stage of an SCC. In conclusion, the results suggest that VEGF might be an important angiogenic factor in cancer invasion. Laryngeal cancer cells and mast cells may control the angiogenic response by releasing VEGF.
    Type of Medium: Electronic Resource
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