the features of the triad consist of ano-rectal anomalies ( particularly ano-rectal stenoses ) , a curved , but limited , sacro-coccygeal defect ( `` '' scimitar sacrum '' '' ) and a presacral tumour , which may be an anterior sacral meningocoele , a teratoma , a cyst ( dermoid or neurenteric a cyst ( dermoid or neurenteric cyst ) or a mixture of these .
C0027651
l tumo
C0010709
cy