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[A case of lung cancer with specific calcification]
Nihon Kyobu Shikkan Gakkai Zasshi
|February 1, 1992
Summary
A rare case of lung cancer with unusual calcinosis is presented. This calcification, found in the lung periphery, preceded hypercalcemia and was influenced by venous congestion.
Area of Science:
- Pulmonary Medicine
- Oncology
- Pathology
Background:
- A 67-year-old male presented with a left upper lobe tumor shadow on chest roentgenogram.
- Initial diagnosis was small cell lung carcinoma, unresponsive to chemotherapy.
Observation:
- The tumor was surrounded by granular and striate shadows.
- Autopsy revealed extensive subepithelial calcinosis in bronchi, bronchioles, veins, and alveolar septa, peripheral to the tumor.
- Calcinosis was absent in the tumor, arterial, and lymphatic systems.
Findings:
- The calcinosis predated the development of hypercalcemia and superior vena caval syndrome.
- Calcinosis density was highest near the primary tumor, decreasing with distance.
- Venous congestion appeared to accelerate the unique distribution of calcinosis.
Implications:
- This case highlights an unusual association between lung cancer and peripheral calcinosis.
- The findings suggest a potential paraneoplastic or localized metabolic process contributing to calcinosis.
- Further research is needed to elucidate the exact mechanism and substance causing this specific calcinosis.