DISCUSSION: Pulmonary nodules and masses are the most common manifestations of lung metastasis. The most commonly reported atypical radiologic features of metastases include cavitation, calcification, pneumothorax, air-space pattern, tumor embolism, endobronchial metastasis, dilated vessels within a mass1. Most of these are however commonly seen in nonmalignant diseases. A retrospective analysis looking at known cases of lung metastases found that only 6 out of 65 patients with GI metastases to the lung showed air space disease on CT, and only 2 out of these 6 were due to metastatic colon carcinoma2. Thus CT findings in our patient are uncommon presentation of pulmonary metastases from colon cancer.