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We examined 13 cases of lactose intolerance developing after gastrectomy. The major symtom in these 13 cases was diarrhea developing after ingestion of cow's milk. In all cases stool pH was acid and stool clinitest was positive. These symptoms were improved with administration of 0.5 gm. lactose (Galantase) per 180 ml. of cow's milk of 5 to 10 minuts after milk intake.

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Patients undergone the operation for esophageal cancer were examined from the viewpoint of preoperative ventilatory function and postoperative pulmonary complication. Restrictive ventilatory dysfunction alone is not indicator of postoperative complication. Short period expiratory force expressed by PEFR and FEV 1/2% is indicative. Adding this value to restrictive factor, difference between the patients with pulmonary complication and without that is clear. Postoperative ventilatory function showed marked deterioration. Postoperative blood gas A-aDo2 and shunt rate indicated miliary atelectasis which could not be detected on chest roentgenogram.