Metastatic renal cell carcinoma to the right ventricle complicating thrombocytopenia

Solitary right ventricular metastasis of renal cell carcinoma is extremely rare. Herein, we report a surgical case of metastatic renal cell carcinoma to the right ventricle, associated with an unusual presentation of "a syndrome resembling idiopathic thrombocytopenic purpura".

[A case report of huge bronchogenic cyst originated in the atrial septum]

Bronchogenic cysts of the heart are extremely rare neoplasma comprising only 1.3% of all the primary cardiac and pericardial tumors. We experienced a case of bronchogenic cyst originated in the interatrial septum that caused the marked swelling of the septum. An asymptomatic woman of 43 years of age was evaluated because of cardiac enlargement on the chest X-ray film. The examinations including cardiac catheterization indicated a left atrial tumor broadly based on the atrial septum. Surgical removal was attempted, and the tumor was revealed to be a cyst involving the whole atrial septum. The histological diagnosis was bronchogenic cyst. The surgery included resection of the cyst together with the septum that was reconstructed with Dacron patch. Postoperative course was smooth, and the patient has returned to normal daily life without any sign of recurrence for two years.

[Automatic recording and analysis of the ambulatory dynamics of cerebellar ataxic mice-rolling mouse Nagoya, Reeler and Weaver (author's transl)]

Rolling mouse Nagoya (Rolling) was found by Dr. Oda, Univ. of Nagoya, in 1969 as a spontaneous mutant and is characterized by the abnormal gait which appears about 2 weeks after birth. The origin and its mechanism of the motor abnormalities of Rolling has not yet been cleared, but this mouse is now grouped to be one of the cerebellar ataxic mice. The locomotion of the adult mice was automatically recorded and quantitized into the counts of each size of movements, and the gait of Rolling was compared with those of the nonaffected normal mouse, Reeler and Weaver. The reproducibility of the locomotion of the mice was fairly good regardless of the cage used and the observation time (less than 10 min.). Affected mice showed significantly small number of counts in size of 1/4 and 1/8 (about 6 and 3 cm in practice) of movements due to toppling during gait compared with the nonaffected normal mice. The gait of Rolling was not completely discerned from the Reeler or Weaver in the spectrum of movements. However, in locus of movements, each mutant showed the specific features of the motor abnormalities. Results presented in this paper suggest that Rolling is similar to Reeler and Weaver with regard to the cerebellar ataxia.