Background Factor V deficiency is a rare disease, with an incidence of one in a million. Symptoms are mostly scant, and it is often diagnosed by the presence of an abnormality on PT‐INR or APTT. In addition, no established therapy exists and platelet dysfunction is seldom found to be concomitant with this disease Case Presentation A 64‐year‐old man who had both factor V deficiency and platelet dysfunction had angina in the past year. Coronary surgery was required, and we successfully performed coronary artery bypass grafting under strategic planned platelet transfusion with additional adequate cryoprecipitates transfusion. No perioperative problems nor any postoperative major bleeding issues were observed. The postoperative course was also uneventful. Conclusion Strategic planned platelet transfusion with the additional transfusion of an adequate amount of cryoprecipitates is thus considered to be feasible for cases presenting with factor V deficiency and platelet dysfunction.

Background Bronchogenic cyst sometimes occurs in the mediastinum and rarely in the intrapericardial space. When located in the intrapericardial space, the main vessels or the heart can be compressed. In addition, if it is difficult to deny malignancy or malignancy transformation potential using any modality, surgical resection should be performed. Case presentation The patient was a 21-year-old woman with persistent symptoms similar to a cold. Enhanced computed tomography confirmed a 51 × 36 × 35-mm intrapericardial cystic structure with partial calcification. The lesion was large enough to compress and interfere with the venous return of the superior vena cava. Thrombus formation was suspected upstream of the compression site. We performed utter extirpation through median sternotomy. A histopathological examination of the surgical specimen revealed a bronchogenic cyst. The postoperative course was uneventful, and she was discharged on postoperative day 9. Conclusion We experienced a case of total extirpation of an intrapericardial bronchogenic cyst complicated with compression of the superior vena cava. Long-term follow-up will be necessary.