Chest scans may help monitor spread of head and neck cancer in high-risk patients
Source: www.sciencedaily.com Author: staff Among high-risk patients with head and neck cancer, chest computed tomography (CT) may help detect disease progression involving the lungs, according to a new report. Developing a second, distant cancer (a metastasis or a new primary cancer) is an important factor affecting survival of patients with head and neck squamous cell carcinoma, which accounts for most head and neck cancers, according to background information in the article. The most common site at which such patients develop new metastases is the lungs, with an incidence of 8 percent to 15 percent. Chest X-rays are the most commonly used screening tool for detecting these malignancies but do not always identify early abnormalities. Yen-Bin Hsu, M.D., of Taipei Veterans General Hospital, Taiwan, and colleagues evaluated 270 screening chest CT scans performed over 42 months in 192 patients with head and neck squamous cell carcinoma. The scans were categorized as new cases, follow-up cases or recurrent cases, and results classified as normal or abnormal. Of the 270 scans, 79 (29.3 percent) were considered abnormal, including 54 (20 percent) that identified a malignant neoplasm of the lung and 25 (9.3 percent) showing indeterminate abnormalities. "The rate of an abnormal scan was significantly higher in the follow-up case group (44.2 percent) than in the new case group (14.2 percent)," the authors write. Patients whose cancer was classified as stage N2 or N3 (indicating some degree of lymph node involvement), who had stage IV disease (in which the cancer has spread to another [...]