Kaposi's sarcoma in kidney transplant recipients: A 23-year experience
Date
2005
Authors
Moosa M.R.
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Abstract
Background: Kaposi's sarcoma (KS) is a relatively common malignancy after kidney transplantation, accounting for up to 80% of all malignancies in developing countries. Aim: To assess the frequency of KS in renal transplant recipients, and determine the impact of demographic factors, immunosuppression and treatment options. Design: Retrospective study in a single centre in South Africa. Methods: Charts and pathology reports of 542 recipients of 623 kidney allografts treated at our institution between 1976 and 1999 were reviewed. Results: After a mean follow-up of 6.4 years, 21 (3.9%) recipients had KS, representing 47.7% of all post-transplant malignancies. KS accounted for more post-transplant cancers in non-White than White patients (79.1% vs. 11.7%, p < 0.001). KS was equally common in males and females, and was not more frequent under cyclosporine. Skin involvement was universal; visceral disease occurred in six patients (28.6%). Sixteen (94.1%) patients with limited skin disease and two (100%) with superficial nodal disease responded to withdrawal or reduction of immunosuppression. Renal function was preserved when immunosuppression was reduced instead of withdrawn (p=0.02). Patients with vital organ involvement succumbed rapidly to KS. Post-mortem examination revealed more extensive disease than was suspected clinically. Discussion: Ethnic differences exist in the frequency of KS in patients residing in the same geographical area. Since withdrawal results in graft loss, reducing immunosuppression should be first-line treatment for patients with disease limited to skin, and possibly for disease of the superficial lymph nodes. The malignant behaviour of KS, and extent of pathological involvement, cast doubt on the idea that KS is a hyperplasia rather than a true malignancy. © The Author 2005. Published by Oxford University Press on behalf of the Association of Physicians. All rights reserved.
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Keywords
azathioprine, cyclosporin, methylprednisolone, mycophenolic acid 2 morpholinoethyl ester, OKT 3, adult, article, autopsy, breast cancer, cancer radiotherapy, Caucasian, controlled study, death, demography, drug withdrawal, enteropathy, ethnic difference, female, follow up, graft rejection, histopathology, human, Kaposi sarcoma, kidney allograft, kidney cancer, kidney failure, kidney function, kidney transplantation, liver cancer, lung cancer, lymphadenopathy, lymphoma, major clinical study, male, medical assessment, medical decision making, medical record, melanoma, morbidity, priority journal, race difference, recipient, retrospective study, sex difference, South Africa, thyroid cancer, Adolescent, Adult, African Continental Ancestry Group, Child, Female, Graft Survival, Histocompatibility Testing, Humans, Immunocompromised Host, Immunosuppressive Agents, Kidney Transplantation, Lymphatic Metastasis, Male, Middle Aged, Retrospective Studies, Sarcoma, Kaposi, Skin Neoplasms, South Africa, Treatment Outcome
Citation
QJM - Monthly Journal of the Association of Physicians
98
3
98
3