Rectal Impaction Following Enema with Concrete Mix.Stephens, Peter J. M.D.; Taff, Mark L. M.D.; Taff, Mark L.American Journal of Forensic Medicine & Pathology: June 1987 Residents' Corner: PDF Only Abstract Abstract : This article describes an unusual rectal foreign body resulting from homosexual anal erotic activities. The patient had used an enema containing a concrete mix which became impacted and required surgical removal. The use, abuse, and complications of enemas are reviewed. (C) Lippincott-Raven Publishers.