What does it mean to have a "slightly" enlarged right ventricle ?

RV enlargement: Suggests the right ventricle is encountering increased resistance when it pumps blood to the lungs. Common causes: pulmonary hypertension, pulmonary valve stenosis &/or regurgitation, high altitude, copd, cardiac fibrosis, athletic heart, congenital anomalies like tetralogy of fallot or ventricular septal defect. Cardiologist can test for these conditions & offer options.

RVE: Right ventricular enlargement or rve typically occurs when the right side of the heart is stressed by the need to generate either increased blood flow or pressure.