C. Y. Show, D. M. Sander, and G. T. Tamura developed a test method to measure the air leakage characteristics of exterior walls of buildings that utilized an outdoor air supply system of ventilation and air handling, taking into account the influence of the stack effect. They applied this method to eight tall buildings in Ottawa, and results were reported. However, windows and wall constructions in Japan are so different than those in Canada that those results cannot be used directly. To obtain our own data, the authors developed a simple test method that utilizes buoyancy caused by the stack effect instead of fans for pressurization. To open doors on the ground floor or the window at the bottom part of the building while the stack effect is operative is the same as pressurizing the whole building, and to open an exit door at the roof or the window at the upper part of the building is the same as decompressing the whole building. This method was applied to three tall buildings of Sendai and Tokyo, whose walls were cast-in-place concrete (Building A), precast concrete panel (Building B), and metal panel (Building C). For the test results, infiltration rates through the exterior wall were estimated by approximate calculation. Of the three, it was found that Building A was the tightest and Building C was the loosest. This paper reports the results of the application for the simple test method we developed.

Ovarian involvement as an initial manifestation of lymphoma, without detectable extraovarian disease, is a rare occurrence. The diagnosis of ovarian lymphoma is almost invariably unsuspected until the tumor has been examined histologically. A 25-year-old null gravid woman presented with abdominal distension. Presence of abnormal lymphoid cells in pleural effusion led to presurgical assumption that the pelvic mass noted on computerized tomography examination might be an ovarian lymphoma. We performed left salpingo-oophorectomy. Clinical, histologic, and molecular examination revealed Burkitt's lymphoma of the ovary with c-myc gene rearrangement and mRNA expression of multiple cytokines. She received dose-intensified combination chemotherapy. She is alive and free of disease 30 months after the diagnosis. Immunophenotype and molecular findings allowed reliable discrimination of Burkitt's lymphoma from diffuse large B-cell lymphoma and other lymphomas. If an ovarian tumor is solid and suspected to be of lymphoid origin, we suggest that it is necessary to obtain samples for genetic examination at surgery. This strategy often provides important information to establish therapeutic regimen and predict patient prognosis.

No abstract

No abstract

No abstract