A case of lung nodular aspergilloma mimicking tumor metastasis accompanied by pulmonary embolism in a gastric cancer patient in remission.

Lung aspergilloma is a noninvasive form of fungal infection of the Aspergillus species and usually presents radiologically as nodular masses in the lungs of patients with pulmonary tuberculosis, chronic obstructive pulmonary disease, and immunosuppressed patients. It may mimic lung metastatic nodules or primary lung cancer. A 57-year-old male patient who underwent surgery for stomach cancer was admitted to our hospital with complaints of shortness of breath, fatigue, and weight loss. Chest computed tomography scan revealed a new nodular lesion measuring 16 × 14 mm in diameter in the upper lobe of the right lung and an embolism in the left pulmonary artery. Wedge resection of the solitary pulmonary nodular was performed. After pathological evaluation, it was interpreted as aspergilloma. Here, we report a case of pulmonary aspergilloma that was followed up with the diagnosis of gastric cancer in remission and underwent resection due to the suspicion of lung metastasis.