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We describe an adult female presenting with dyspnea in whom both transthoracic and transesophageal echocardiography detected a mobile sac-like structure in the right ventricular outflow tract ( RVOT) containing a heterogenous echogenic mass. This sac-like structure markedly changed its shape and size during the cardiac cycle. These findings and the fact that the patient lived in a rural area raised the possibility that this was a hydatid cyst. A bubble study using normal saline was useful in detecting a contained rupture of the cyst. Bubble echoes were noted within the sac-like structure but did not penetrate the inner wall of the cyst which contained echogenic material, indicating that the rupture was confined only to the outer layers. At surgery, a 0.5 cm communication was noted between the cyst and the RVOT and pathology confirmed the diagnosis of hydatid cyst. [ABSTRACT FROM AUTHOR]

We are describing pulmonary valve involvement with thickening and stenosis detected by two-dimensional transthoracic echocardiography in an adult presenting with Löeffler's endocarditis. To our knowledge, this has not been described previously. Complete regression of the lesions occurred with corticosteroid therapy. Tricuspid valve thickening and stenosis and thickening and thrombus formation in the right ventricle also present initially disappeared completely with therapy. [ABSTRACT FROM AUTHOR]

In this report, we present a case of spindle cell sarcoma of the pulmonary artery diagnosed by transthoracic echocardiography. To the best of our knowledge, this case is the youngest reported case of pulmonary artery sarcoma ( PAS) to date. PAS is frequently confused for pulmonary embolism; in this case, echocardiographic findings allowed for differentiation between pulmonary embolism and solid tumor. [ABSTRACT FROM AUTHOR]