Anterior sacral meningocele as a pelvic complication of Marfan syndrome

Anterior sacral meningocele (ASM) is well recognized in Marfan syndrome as a consequence of dural ectasia, Two cases presenting as non-gynaecological pelvic masses are described highlighting the clinical difficulty in diagnos is and the classical radiological findings, The classification of ASM and a ssociated anomalies of the sacrum are reviewed.