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  • Title: Rectal malacoplakia in renal transplantation: MR features.
    Author: Bellin MF, Darchen MA, Hoang C, Bitker MO, Ourhama S, Attal M, Grellet J.
    Journal: J Comput Assist Tomogr; 1994; 18(6):975-8. PubMed ID: 7962812.
    Abstract:
    This report describes the CT and MRI features of rectal malacoplakia in a renal transplant recipient. The lesion appeared strongly hyperdense (105 HU) on unenhanced CT and demonstrated hypointense signal on T1- and T2-weighted MR imaging with slight homogeneous enhancement after gadolinium injection. These characteristics distinguish this lesion from other more common neoplastic, inflammatory rectal lesions that are typically isointense on T1-weighted imaging and enhance variably after gadolinium injection. Characteristic intracytoplasmic siderocalcific spherules in malacoplakia can produce suggestive features on unenhanced CT and MRI.
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