None of the presenting symptoms or laboratory findings are pathognomonic for SARS. Even though cough developed in a majority of patients, it did not occur until later in the disease course, suggesting that a cough preceding or concurrent with the onset of fever is less likely to indicate SARS. While PCR for SARS-CoV appears to be the best early diagnostic test currently available, it is clear that better methods are needed to differentiate between SARS and non-SARS illness on initial presentation.

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Agenesis of the right upper lobe of the lung is a very uncommon congenital anomaly and may be referred to chest clinics in adulthood for an incidental finding of abnormal chest radiograph. The presentations of chest radiograph may imitate many common situations such as right upper lobe collapse presenting as an ipsilateral shifting of the mediastinum or elevation of the right hemidiaphragm due to eventration or subdiaphragmatic lesions. A chest computed tomography is considered the most conclusive examination used to diagnose lung agenesis. Three-dimensional reconstructed images can be particularly helpful in delineating abnormalities of the bronchi and associated arterial and venous structures. We describe here a young woman with allergic rhinitis and bronchial asthma since her early childhood. She was referred to our clinic for an incidental finding of abnormal chest radiograph after a school health checkup. Right upper lobe atelectasis or intra-abdominal lesions were initially suspected. After a thorough image study, she was diagnosed as a case of agenesis of the right upper lobe. Our report emphasizes the importance that a high index of suspicion and adequate image investigation are necessary to diagnose congenital lung anomalies.