A 31-year old female with anorexia nervosa was referred to the Department of General Surgical Science at Gunma University for a surgical resection of a pulmonary aspergilloma. The patient had received treatment for anorexia nervosa at the Department of Psychiatry of the Hospital of Gunma University Graduate School of Medicine. A chest radiograph showed an infiltrative shadow with apical pleural thickening in the left upper lung field. A contrast enhanced computed tomography showed an irregular mass shadow with cavity formation that involved spherical clusters in the left upper lobe. The patient was diagnosed with pulmonary aspergilloma by serological studies and radiological features. A pulmonary segmentectomy of the left apical segment (S1 + 2) through a lateral thoracotomy was successfully performed. She had an uneventful postoperative recovery, and the final histopathological examination confirmed the diagnosis of pulmonary aspergilloma. This is a rare case study of a young female patient with anorexia nervosa who developed pulmonary aspergilloma.