What is crista terminalis of right atrium?
What is crista terminalis of right atrium?
The crista terminalis (or terminal ridge) is a ridge of myocardium within the right atrium that extends along the posterolateral wall of the right atrium between the orifice of the superior vena cava to the orifice of the inferior vena cava (IVC).
What does crista terminalis represent?
The crista terminalis or terminal crest represents the junction between the sinus venosus and the heart in the developing embryo.
What is right atrial mass?
Right atrial (RA) masses are rare entities often detected incidentally during imaging studies. Leading etiologies of right atrial masses are tumor, thrombi, and vegetations. We present two cases of right atrial masses, a cardiac lipoma and an artifact.
What is a Chiari network in right atrium?
Introduction. The Chiari network, encountered infrequently in the right atrium, is a fenestrated, net-like embryonic remnants of valves of sinus venosus, lying closely in relation to the inferior vena cava and coronary sinus, sometimes connecting these with other right atrial structures [1].
Why is the sinus node the pacemaker?
The sinus node continuously generates electrical impulses, thereby setting the normal rhythm and rate in a healthy heart. Hence, the SA node is referred to as the natural pacemaker of the heart.
Is sulcus Terminalis the same as crista terminalis?
The terminal sulcus marks the separation of the right atrial pectinate muscles from the sinus venarum. On the internal aspect of the right atrium, corresponding to the terminal sulcus is the crista terminalis. The superior border of the terminal sulcus designates the transverse plane in which the SA node resides.
Is Chiari network congenital?
Background: Chiari’s network is a congenital remnant of the right valve of the sinus venosus. It has been found in 1.3% to 4% of autopsy studies and is believed to be of little clinical consequence.
What 3 vessels fill the right atrium?
The blood vessels include the superior and inferior vena cava. These bring blood from the body to the right atrium. Next is the pulmonary artery that carries blood from the right ventricle to the lungs.
Does the crista terminalis mimic a right atrial mass?
Prominent crista terminalis mimicking a right atrial mass: case report. Abstract. The crista terminalis is a normal anatomical structure within the right atrium that is not normally visualised in the standard views obtained while performing a transthoracic echocardiogram.
What does the crista terminalis look like?
The crista terminalis is a well-defined fibromuscular ridge formed by the junction of the sinus venosus and primitive right atrium that extends along the posterolateral aspect of the right atrial wall. Occasionally, this structure can be prominent, thus mimicking right atrial mass-like tumour, thrombus, or vegetation [1–6].
How to avoid misdiagnosis of crista terminalis with PET/MRI?
A preferable understanding of the complex anatomy and PET/MRI appearance of a prominent crista terminalis will minimize the misdiagnosis of this structure and avoiding unnecessary anxiety and more invasive examinations.
Is the crista terminalis normal in renal disease?
Abstract The crista terminalis is a normal anatomical structure within the right atrium that is not normally visualised in the standard views obtained while performing a transthoracic echocardiogram. In this case report, transthoracic echocardiography suggested the presence of a right atrial mass in a patient with end stage renal disease.
