MR Imaging of Bilateral Renal Malacoplakia After Liver Transplantation

Kamishima, Tamotsu; Ito, Katsuyoshi; Awaya, Hitomi; Mitchell, Donald G.

doi:10.2214/ajr.175.3.1750919

Cited by 10 publications

(5 citation statements)

References 3 publications

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“…The nodules have a low signal on all sequences and show intervening fibrous stroma. 13,14 Malakoplakia occurs because of abnormal macrophage function, usually in adults with underlying systemic disorders and a disrupted response to infection. Although renal parenchymal malakoplakia is extremely rare in children, sonography is usually the first imaging modality used for diagnosis of this condition.…”

Section: Discussionmentioning

confidence: 99%

Sequential Changes in Sonographic Appearances of Childhood Renal Malakoplakia Progressing to End-Stage Renal Failure

Dharmadhikari

Crisp²

2006

Journal of Ultrasound in Medicine

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Section: Discussionmentioning

confidence: 99%

Sequential Changes in Sonographic Appearances of Childhood Renal Malakoplakia Progressing to End-Stage Renal Failure

Dharmadhikari

Crisp²

2006

Journal of Ultrasound in Medicine

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“…Malakoplakia also occurs in the bile duct system and in the gallbladder (Sahel et al 1976;Charpentier et al 1983;Hide et al 2001;Regragui et al 2003;Agnarsdottir et al 2004;Di Tommaso et al 2005). Interestingly, renal and intestinal malakoplakia has been repeatedly observed in patients after liver transplantation (Rull et al 1995;Kamishima et al 2000;Weinrach et al 2004), but this association is likely to be based on immunosuppression, because a similar association has been seen in renal graft recipients (Ourahma et al 1996;Berney et al 1999).…”

Section: Malakoplakia Of the Hepatobiliary Tractmentioning

confidence: 98%

Hepatobiliary Pseudotumors Consisting of Nonneoplastic Hematopoietic Cells and Cells of the Macrophage Lineage

Zimmermann

2016

Tumors and Tumor-Like Lesions of the Hepatobiliary Tract

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The hepatobiliary tract can develop tumor-like lesions or pseudotumors that consist of hematopoietic tissue or macrophage accumulations. Extramedullary hematopoiesis can occur in the liver and may result in macroscopically visible nodular lesions (nodular extramedullary hematopoiesis). Macroscopically, the lesions may have several cm in diameter and usually show a red-brown or tan color. One variant is characterized by the production of an abundant fibrous stroma (sclerosing extramedullary hematopoietic tumor). The liver can be the site of various eosinophilic pseudotumors and eosinophilic necrosis. Macrophage-rich lesions of the liver that can result in tumorlike nodular lesions comprise lipogranulomas, xanthomatous lesions, rheumatoid nodules, malakoplakia, and accumulations of Gaucher cells in Gaucher's disease.

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“…Malakoplakia has also been reported in SOT other than kidney transplantation; for example, liver transplantation with colon and kidney involvement, cardiac transplantation with cutaneous form; and it has also manifested as epididymitis and rectal mass . In addition, malakoplakia has been reported in hematopoietic stem cell transplantation, with GI tract and pleural involvement caused by Rhodococcus equi .…”

Section: Literature Reviewmentioning

confidence: 99%

“…In some patients, presentation of malakoplakia was associated with the management of previous rejection 2,7,19,21,23,31 ; this is not a constant description (22% of cases), but in up to 74% of cases, chronic dysfunction of the allograft is present. E. coli is the most frequently isolated microorganism in these cases (61% of cases), even though Malakoplakia has also been reported in SOT other than kidney transplantation; for example, liver transplantation with colon 40-42 and kidney involvement, 43 cardiac transplantation with cutaneous form 44 ;…”

Section: Literature Reviewmentioning

confidence: 99%

Malakoplakia after kidney transplantation: Case report and literature review

Nieto-Ríos

Ramírez

Quintero

et al. 2017

Transplant Infectious Dis

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Malakoplakia is a granulomatous disease associated with an infectious etiology, usually involving the urinary tract. It reveals itself as a recurrent urinary tract infection (r-UTI), and in some cases, it is associated with impairment of renal function. Immunosuppression is one of its main associated factors, and it has been increasingly described in patients with solid organ transplantation (SOT), mainly kidney transplantation. Macroscopically, it can form masses and sometimes it may be confused with neoplasia, which is why histological findings are fundamental for the diagnosis. Here, we present a case of bladder malakoplakia, manifested by r-UTI from Escherichia coli in a patient with renal transplantation, refractory to long-term antibiotic treatment and reduction in immunosuppression, which resolved after surgical management. We also summarize the clinical characteristics of malakoplakia and compare them with previous reports in the literature on SOT.

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MR Imaging of Bilateral Renal Malacoplakia After Liver Transplantation

Cited by 10 publications

References 3 publications

Sequential Changes in Sonographic Appearances of Childhood Renal Malakoplakia Progressing to End-Stage Renal Failure

Sequential Changes in Sonographic Appearances of Childhood Renal Malakoplakia Progressing to End-Stage Renal Failure

Hepatobiliary Pseudotumors Consisting of Nonneoplastic Hematopoietic Cells and Cells of the Macrophage Lineage

Malakoplakia after kidney transplantation: Case report and literature review

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