Tethering the underlying ventricular wall is the most common for the posterior and septal leaflets, and sail-like anterior leaflets may be tethered to the RV free wall also. About 50% of individuals with Ebsteins anomaly have an associated shunt between the right and left atria, either an atrial septal defect or a patent foramen ovale. Electrophysiologic abnormalities
About 50% of individuals with Ebsteins anomaly have an accessory pathway with evidence of Wolff-Parkinson-White syndrome, secondary to the atrialized right ventricular tissue. This can lead to abnormal heart rhythms including atrioventricular re-entrant tachycardia. Other abnormalities that can be seen on the ECG include:

signs of right atrial enlargement or tall and broad Himalayan P waves
first degree atrioventricular block manifesting as a prolonged PR-interval
low amplitude QRS complexes in the right precordial leads
atypical right bundle branch block
T wave inversion in V1-V4 and Q waves in V1-V4 and II, III and aVF. Risk factors
An enlargement of the aorta may occur; an increased risk of abnormality is seen in babies of women taking lithium during the first trimester of pregnancy (though some have questioned this) and in those with Wolff-Parkinson-White syndrome. Diagnosis
Diagnosis is mainly depends on Echocardiography
Chest x will shows cardiomegaly

Treatment
Medication
Ebsteins cardio physiology typically presents as an (antidromic) AV reentrant tachycardia with associated pre-excitation. In this setting, the preferred medication treatment agent is procainamide. Since AV-blockade may promote conduction over the accessory pathway, drugs such as beta blockers, calcium channel blockers, and digoxin are contraindicated.
A biopsy of the lesions will show extravasated erythrocytes within dermal papillae and dyskeratotic cells within the dermis.A set of validated diagnostic criteria for pityriasis rosea is as follows:
A patient is diagnosed as having pityriasis rosea if:

On at least one occasion or clinical encounter, the patient has all the essential clinical features and at least one of the optional clinical features, and
On all occasions or clinical encounters related to the rash, the patient does not have any of the exclusional clinical features.The essential clinical features are the following:
Discrete circular or oval lesions,
Scaling on most lesions, and
Peripheral collarette scaling with central clearance on at least two lesions.The optional clinical features are the following:
Truncal and proximal limb distribution, with less than 10% of lesions distal to mid-upper-arm and mid-thigh,
Orientation of most lesions along skin cleavage lines, and
A herald patch (not necessarily the largest) appearing at least two days before eruption of other lesions, from history of the patient or from clinical observation.The exclusional clinical features are the following:
Multiple small vesicles at the centre of two or more lesions,
Two or more lesions on palmar or plantar skin surfaces, and
Clinical or serological evidence of secondary syphilis. Treatment
The condition usually resolves on its own, and treatment is not required. Oral antihistamines or topical steroids may be used to decrease itching. Steroids do provide relief from itching, and improve the appearance of the rash, but they also cause the new skin that forms (after the rash subsides) to take longer to match the surrounding skin color.