Vascular malformation - Camffurfiad Fasgwlaidd https://en.wikipedia.org/wiki/Vascular_malformation
Mae Camffurfiad Fasgwlaidd (Vascular malformation) yn annormaledd pibell waed neu pibell lymff. Gall y lesiwn achosi problemau esthetig wrth iddynt dyfu. Gall y lesiwn barhau i ddod yn fawr trwy gydol oes.

Mwy o wybodaeth ― Cymraeg
References Congenital arteriovenous malformation (ISSVA classification for vascular anomalies) - Case reports 38435403 
NIH
Daethom o hyd i fachgen 7 oed gyda chwydd ar ei law dde ers ei eni. Sylwodd ei dad ei fod wedi bod yn gwaethygu, ac mae'r bachgen yn teimlo tenderness o amgylch y chwydd. Cafodd angiembolism yn ôl ac mae angen un arall arno nawr. Rydyn ni'n cynllunio sclerotherapy iddo.
Presenting a Magnetic Resonance Imaging (MRI) finding of a 7 year, 5-month-old male who was brought to our rural hospital by his father with chief complaints of swelling over his right hand since birth. His father narrated that the swelling is increasing significantly and the child has tenderness over swelling. The child underwent an angioembolism 1 month ago and has been brought for re-embolism. Now sclerotherapy has been planned for the patient.