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Aijaz P, Niazi MA, Ferrick JP, Goss CH, Kamran A. Primary Renal Lymphoma: A Rare Cause of Bilateral Renal Enlargement and Acute Renal Failure in a Patient With Rheumatoid Arthritis. Cureus 2024; 16:e63870. [PMID: 38974400 PMCID: PMC11224646 DOI: 10.7759/cureus.63870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2024] [Indexed: 07/09/2024] Open
Abstract
Primary renal lymphoma (PRL) is a rare non-Hodgkin's lymphoma (NHL) involving the kidneys without evidence of extra-renal involvement. We describe a 66-year-old female who presented with bilateral pleural effusions, and acute renal failure and was diagnosed with primary renal diffuse large B-cell lymphoma (DLBCL). She presented with shortness of breath due to bilateral pleural effusions and acute renal failure. Computed tomography (CT) of the chest reported bilateral pleural effusions. Thoracocentesis and subsequent fluid analysis reported non-malignant effusion. Her kidney function worsened during her hospital stay, requiring dialysis. Nonspecific findings such as bilateral renal enlargement on imaging prompted a renal biopsy. Histopathology reported mixed tubulointerstitial atypical lymphocytic CD 20 and BCL-6 positive cell infiltrates, confirming non-Hodgkin diffuse large B-cell lymphoma. Whole-body positron emission tomography/CT (PET/CT) and brain magnetic resonance imaging (MRI) ruled out the involvement of any other organs or lymph nodes, confirming our diagnosis of PRL. She was treated with six cycles of rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP). Her kidney function recovered fully and remained normal at the one-year follow-up. We highlight the importance of recognizing PRL as an underlying cause of renal failure and its association with autoimmune diseases. Prompt investigation with timely diagnosis and treatment can result in improved morbidity and mortality in these patients.
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Affiliation(s)
- Parisa Aijaz
- Internal Medicine, Charleston Area Medical Center, Charleston, USA
| | - Muhammad A Niazi
- Internal Medicine, Dow University of Health Sciences, Karachi, PAK
| | - James P Ferrick
- Hematology and Medical Oncology, Charleston Area Medical Center, Charleston, USA
| | | | - Amir Kamran
- Hematology and Medical Oncology, Charleston Area Medical Center, Charleston, USA
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Bai Y, Zheng Y, Zhang Q, Jiang Q, Diao Z, Guo W, Liu S, Liu W. Renomegaly and acute kidney injury as primary manifestations of non-Hodgkin's lymphoma: a report of three cases. Diagn Pathol 2023; 18:133. [PMID: 38066507 PMCID: PMC10704622 DOI: 10.1186/s13000-023-01408-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 10/24/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND In adults with non-Hodgkin's lymphoma, renal enlargement and acute kidney injury occur infrequently at first presentation, especially in T lymphocytic lymphomas. CASE PRESENTATION We report three cases of non-Hodgkin's lymphoma with acute renal injury and bilateral renal enlargement. At diagnosis, one patient presented with an adrenal mass, one patient's lymph node biopsy was consistent with a renal biopsy, and one patient had primary renal lymphoma with no extrarenal disease. Assessment of renal pathology in Case 2 and Case 3 showed interstitial lymphocyte infiltration; the pathological types were non-Hodgkin's diffuse large B lymphoma originating from activated B cells outside germinal centers and non-Hodgkin's T-lymphoblastic lymphoma/leukemia, respectively. Case 1 did not receive anti-lymphoma therapy and died from infection and multiple organ failure within 1 month of hospitalization. Case 2 received eight courses of R-CHOP; her lymphoma recurred 2 years after diagnosis and she died from severe pulmonary infection 3 years after diagnosis. Case 3 received hyper-CVAD regularly and achieved stable renal function; this patient remains under follow-up. CONCLUSIONS Renal lymphoma may have diverse manifestations, especially primary renal lymphoma without extrarenal involvement. Nephrologists should pay careful attention to these manifestations to ensure accurate diagnosis.
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Affiliation(s)
- Yu Bai
- Department of Nephrology, Faculty of Kidney Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yuanyuan Zheng
- Department of Pathology, Faculty of Kidney Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Qidong Zhang
- Department of Nephrology, Faculty of Kidney Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Qun Jiang
- Department of Nephrology, Faculty of Kidney Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zongli Diao
- Department of Nephrology, Faculty of Kidney Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Wang Guo
- Department of Nephrology, Faculty of Kidney Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Sha Liu
- Department of Nephrology, Faculty of Kidney Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
| | - Wenhu Liu
- Department of Nephrology, Faculty of Kidney Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
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Lee SB, Yoon YM, Hong R. Primary renal lymphoma presenting as renal failure: A case report and review of literature from 1989. World J Clin Cases 2023; 11:7113-7126. [PMID: 37946781 PMCID: PMC10631424 DOI: 10.12998/wjcc.v11.i29.7113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/21/2023] [Accepted: 09/18/2023] [Indexed: 10/13/2023] Open
Abstract
BACKGROUND Primary renal lymphoma (PRL) is extremely rare with an incidence of 0.7% among extranodal lymphomas. Occult renal lymphoma, which mimics medical renal disease and bilateral renal involvement, presents a diagnostic challenge to nephrologists and radiologists as the clinical and radiological findings are mostly non-specific or inconclusive. Acute kidney injury (AKI) is not an uncommon finding in renal infiltration due to malignant lymphoma. However, only 14% of cases are detected before death, and the low diagnostic rate may be due to the non-specific clinical manifestations of renal involvement, with only 0.5% of these cases presenting with AKI. Moreover, PRL is difficult to diagnose based on clinical, biochemical, and radiologic features, especially, in the case of bilateral diffuse involvement. CASE SUMMARY Herein, we report a 74-year-old woman with primary diffuse large B-cell lymphoma who presented with AKI diagnosed by ultrasound-guided needle biopsy. We also report the clinicopathologic findings of 121 PRL cases reported since 1989, by conducting a literature review of published cases. CONCLUSION A timely renal biopsy provides the most expedient means of establishing the diagnosis. Thus, early identification of the disease by the clinician facilitates early diagnosis toward effective treatment.
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Affiliation(s)
- Seul-Bi Lee
- Department of Hemato-Oncology, Medical School, Chosun University, Gwangju 61453, South Korea
| | - Young-Min Yoon
- Department of Nephrology, Medical School, Chosun University, Gwangju 61453, South Korea
| | - Ran Hong
- Department of Pathology, Medical School, Chosun University, Gwangju 61453, South Korea
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He X, Di M, Wang GN, Gao JB. Pediatric primary renal lymphoma presenting with multiple masses: A challenging case report and narrative review. Medicine (Baltimore) 2023; 102:e33850. [PMID: 37335697 DOI: 10.1097/md.0000000000033850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/21/2023] Open
Abstract
RATIONALE Only 20 cases of pediatric primary renal non-Hodgkin's lymphoma have been reported since 1995, rare cases and a variety of imaging manifestations have led to difficulties in its diagnosis and treatment. PATIENT CONCERNS Herein, we share in detail a case of primary renal lymphoma (PRL) in a child and summarize the common clinical manifestations, imaging features, and prognostic factors of pediatric PRL by retrospectively analyzing cases reported in the literature. A 2-year-old boy presented to the clinic with a large mass on the right side of his abdomen along with loss of appetite. DIAGNOSES Imaging revealed a large right renal mass, nearly replacing the entire renal tissue, along with numerous small nodules in the left kidney. Given no local adenopathy and metastases, the diagnosis was unclear. A percutaneous renal puncture was performed, which proved the diagnosis of Burkitt's lymphoma. Since no bone marrow involvement, this child was diagnosed with pediatric PRL. INTERVENTIONS This PRL boy was treated with the NHL-BFM95 protocol and supportive care. OUTCOMES Unfortunately, this boy died of multiple organ failure in the fifth month of treatment. LESSONS As per literature review, the presentation of pediatric PRL is fatigue, loss of appetite, weight loss, abdominal swelling, or other nonspecific symptoms. Although in 81% of cases it often infiltrates the bilateral kidneys, urine abnormalities caused by pediatric PRL are uncommon. 76.2% of pediatric PRL were boys and 2/3 of all cases presented as diffuse renal enlargement. Those PRL presented as masses could easily be misdiagnosed as WT or other malignancies. Absent of local enlarged lymph node, no necrosis or calcification suggest atypical presentation of renal masses and a percutaneous biopsy is needed in timely establishing the accurate diagnosis for appropriate treatment. Based on our experience, percutaneous renal puncture core biopsy is a safe procedure.
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Affiliation(s)
- Xiao He
- Ultrasound Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Min Di
- Ultrasound Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Guan-Nan Wang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jian-Bo Gao
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Al-Maghrabi JA. Primary lymphoma of the kidney: Pathology experience from 2 tertiary hospitals in Western Saudi Arabia. Saudi Med J 2023; 44:29-37. [PMID: 36634947 PMCID: PMC9987681 DOI: 10.15537/smj.2023.44.1.20220772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 12/05/2022] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVES To document the clinicopathological features of primary renal lymphoma (PRL) at 2 tertiary hospitals in the western region of the Kingdom of Saudi Arabia. METHODS Data were retrieved from all PRLs that were diagnosed at King Abdulaziz University Hospital and King Faisal Specialist Hospital and Research Centre, Jeddah, Saudi Arabia, between January 2002 and April 2022. Histopathological and immunohistochemical slides were reviewed, and additional immunohistochemistry stains were carried out in selected cases. Follow-up data were also collected. RESULTS There were 17 identified cases of PRL. The age of the patients ranged from 4-76 years (median: 50.5 years and mean: 46.8 years), 11 (64.7%) were males, and 6 (35.3%) were females. There were 12 cases of diffuse large B-cell lymphoma, 3 cases of Burkitt's lymphoma, and 2 cases of post-transplant lymphoproliferative disorder. The median follow-up duration was 22 months. The one-year overall survival rate was 71% and the 2-year overall survival rate was 43% during follow-up. CONCLUSION Primary renal lymphomas in Saudi patients are more common in males and seen in a relatively younger age group compared to the available worldwide data. The diagnosis of PRL is important to avoid tumor dissemination and unnecessary nephrectomy. Diffuse large B-cell lymphoma is the most common pathological type and non-germinal center B-cell is the most common subtype.
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Affiliation(s)
- Jaudah A. Al-Maghrabi
- From the Department of Pathology, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia, and from the Department of Pathology, King Faisal Specialist Hospital and Research center, Jeddah, Kingdom of Saudi Arabia.
- Address correspondence and reprint request to: Dr. Jaudah A. Al-Maghrabi, Department of Pathology, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. E-mail: ORCID ID: https://orcid.org/0000-0002-0812-9592
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He J, Mu Y, Che BW, Liu M, Zhang WJ, Xu SH, Tang KF. Comprehensive treatment for primary right renal diffuse large B-cell lymphoma with a renal vein tumor thrombus: A case report. World J Clin Cases 2022; 10:5352-5358. [PMID: 35812668 PMCID: PMC9210905 DOI: 10.12998/wjcc.v10.i16.5352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 12/21/2021] [Accepted: 04/21/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Renal involvement in lymphoma is commonly associated with widespread nodal or extranodal lymphoma. Primary renal diffuse large B-cell lymphoma is an extremely rare extranodal lymphoma, accounting for fewer than 1% of all renal masses. Interestingly, the patient in this study had a renal vein tumor thrombus that was observed after laparoscopic radical nephrectomy.
CASE SUMMARY We report the case of a 56-year-old female patient with primary renal lymphoma and a renal vein tumor thrombus whose first symptom was right pain in the back and gross hematuria. Histopathology revealed primary renal diffuse large B-cell lymphoma. The patient received 8 standard cycles of rituximab with cyclophosphamide, doxorubicin, vincristine, and prednisone chemotherapy after surgery, and no obvious signs of recurrence were observed during the one-year follow-up.
CONCLUSION We evaluated comprehensive treatment of primary renal diffuse large B-cell lymphoma and multidisciplinary management of this malignancy.
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Affiliation(s)
- Jun He
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
| | - Yi Mu
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
| | - Bang-Wei Che
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
| | - Miao Liu
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
| | - Wen-Jun Zhang
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
| | - Sheng-Han Xu
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
| | - Kai-Fa Tang
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
- Institute of Medical Science, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
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Kubota M, Kawakita M. Editorial Comment to A case of perirenal non-specific lymphadenitis mimicking a solitary renal mass. IJU Case Rep 2022; 5:13-14. [PMID: 35005459 PMCID: PMC8720711 DOI: 10.1002/iju5.12384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 09/17/2021] [Indexed: 11/07/2022] Open
Affiliation(s)
- Masashi Kubota
- Department of UrologyKobe City Medical Center General HospitalKobeJapan
- Department of UrologyKyoto University Graduate School of MedicineKyotoJapan
| | - Mutsushi Kawakita
- Department of UrologyKobe City Medical Center General HospitalKobeJapan
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Primary, Bilateral and Diffuse Renal Non-Hodgkin's Lymphoma in a Young Woman Suffering from Turner Syndrome. J Pers Med 2021; 11:jpm11070644. [PMID: 34357111 PMCID: PMC8305304 DOI: 10.3390/jpm11070644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/02/2021] [Accepted: 07/03/2021] [Indexed: 11/16/2022] Open
Abstract
Primary renal lymphoma (PRL) is a rare form of non-Hodgkin's lymphoma (NHL) restricted to and primarily involving one or both kidneys, with no lymph node extension. It accounts for <1% of extranodal lymphomas, and descriptions in the literature are limited. Here, we describe an unprecedented case of bilateral PRL in a 44-year-old woman with Turner syndrome and discuss both diagnostic and therapeutic issues in the light of the available literature in the field. A personalized approach to this rare disease is necessary.
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Cheung CY, Tang AHC, Wong YT, Chan GSW, Tang SCW. Clinicopathological features of Chinese patients with B-cell lymphoproliferative disorders and kidney infiltration. Nephrology (Carlton) 2021; 26:650-658. [PMID: 33729651 DOI: 10.1111/nep.13876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/04/2021] [Accepted: 03/06/2021] [Indexed: 11/30/2022]
Abstract
AIM Direct kidney involvement in B-cell lymphoproliferative disease is a rare disorder with only a few studies reported in Caucasian patients. The clinicopathological characteristics and outcome of this entity remain poorly described. METHODS We retrospectively studied all adult Chinese patients who had histology-proven renal parenchymal infiltration by malignant B-cells between 1 January 2000 and 31 December 2018 at two tertiary hospitals in Hong Kong. Clinical, pathological and radiological data were collected from 20 patients. Follow-up data were analysed until 31 December 2019. RESULTS Median follow-up duration was 22 (1-171) months. Only seven patients (35%) had established diagnosis of haematological cancer before kidney biopsy. Diffuse large B-cell lymphoma (DLBCL) was the most common subtype in our cohort (n = 5, 25%). Others included low-grade B-cell lymphoma (n = 11), intravascular large B-cell lymphoma (n = 1), mantle cell lymphoma (n = 1) and multiple myeloma (n = 2). Fourteen patients (70%) presented with AKI while 12 patients (60%) had proteinuria. Seven patients (35%) had unilateral renal mass, one had bilateral renal masses and one had bilateral diffuse nephromegaly in computed tomography. Lymphomatous tubulointerstitial infiltration was the prevalent histological finding. Nine patients (45%) had coexisting renal lesions other than direct tumour infiltration. All but one patient received chemotherapy. Ten patients died and renal responders had a significantly better survival than non-renal responders (p = .03). CONCLUSION Direct tumour infiltration can occur in a wide variety of B-cell lymphoproliferative disorders. Coexisting immunoglobulin-related nephropathy is frequently found. Renal biopsy is required for early diagnosis which allows timely and appropriate treatment.
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Affiliation(s)
- Chi Yuen Cheung
- Renal Unit, Department of Medicine, Queen Elizabeth Hospital, Hong Kong
| | - Arthur H C Tang
- Division of Nephrology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Pok Fu Lam, Hong Kong
| | - Yuen Ting Wong
- Renal Unit, Department of Medicine, Queen Elizabeth Hospital, Hong Kong
| | - Gavin S W Chan
- Department of Pathology, Queen Mary Hospital, Pok Fu Lam, Hong Kong
| | - Sydney C W Tang
- Division of Nephrology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Pok Fu Lam, Hong Kong
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Bruce G, Chaudhury S, Reynolds B. Bilateral primary renal diffuse large B-cell lymphoma: a rare presentation of paediatric renal disease mimicking juvenile nephronophthisis. BMJ Case Rep 2020; 13:13/7/e234810. [PMID: 32675115 DOI: 10.1136/bcr-2020-234810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
A 12-year-old boy presented with a prolonged history of headache, fatigue and hypertension. Initial investigations were consistent with presumed non-oliguric end-stage renal disease, leading to a provisional diagnosis of juvenile nephronophthisis. Subsequent imaging demonstrated bilaterally enlarged kidneys without cystic change. Mutation analysis was negative for nephronophthisis, causing diagnostic uncertainty which prompted renal biopsy. Histology revealed a primary renal diffuse large B-cell lymphoma which was highly responsive to chemotherapy, including the anti-CD20 monoclonal agent, rituximab. Renal function improved during lymphoma treatment, with residual chronic kidney disease stage 3a once chemotherapy was completed. Atypical diagnostic features should always prompt re-evaluation of a patient. In this case, the delayed malignancy diagnosis did not have an adverse effect on patient survival or morbidity. The outcome for primary renal lymphoma (PRL) has improved markedly following the introduction of rituximab.
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Affiliation(s)
- Gordon Bruce
- Department of Paediatrics, NHS Greater Glasgow and Clyde, Glasgow, UK
| | - Shahzya Chaudhury
- Department of Paediatrics, NHS Greater Glasgow and Clyde, Glasgow, UK
| | - Ben Reynolds
- Department of Paediatrics, NHS Greater Glasgow and Clyde, Glasgow, UK
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Bokhari SRA, Inayat F, Bokhari MR, Mansoor A. Primary renal lymphoma: a comprehensive review of the pathophysiology, clinical presentation, imaging features, management and prognosis. BMJ Case Rep 2020; 13:13/6/e235076. [PMID: 32554453 DOI: 10.1136/bcr-2020-235076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Primary renal lymphoma (PRL) is defined as a non-Hodgkin's lymphoma restricted to kidneys with the absence of extensive nodal disease. It is an exceedingly rare clinicopathological entity, accounting for 0.7% of extranodal lymphomas. Published medical literature regarding the natural history and clinical outcomes of PRL remains limited. We describe a case of a young patient who presented with left shoulder pain, continuous fever, and unexplained weight loss as atypical initial manifestations of bilateral PRL, confirmed with the standard set of investigations. Furthermore, this article reviews the literature and discusses various aspects of PRL, including pathophysiology, presentation patterns, imaging and pathological characteristics, management, and prognosis. This paper serves to provide an update and aims to enhance the understanding of PRL. Timely diagnosis and treatment are imperative to achieve improved outcomes. Clinicians should maintain a high index of suspicion in order to prevent morbidity and mortality associated with this serious disease.
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Taneja A, Kumar V, Chandra AB. Primary renal lymphoma: A population-based analysis using the SEER program (1973-2015). Eur J Haematol 2020; 104:390-399. [PMID: 31769538 PMCID: PMC7216951 DOI: 10.1111/ejh.13360] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 11/05/2019] [Accepted: 11/06/2019] [Indexed: 12/17/2022]
Abstract
Objective Primary renal lymphoma (PRL) is defined as a non‐Hodgkin lymphoma (NHL) restricted to kidneys without extensive nodal disease. The literature on epidemiology and outcome in PRL is limited to case reports and small case series. Methods We utilized Surveillance, Epidemiology, and End Result database (1984‐2015) to study the demographic, clinical, and pathological characteristics of PRL. We conducted analysis to assess factors associated with overall survival (OS) and cause‐specific survival (CSS). Results A total of 599 (0.17% of all NHL) patients were eligible for the study. The age‐adjusted incidence was 0.035/100,000 population and is increasing. The median age was 72 years, and most of the patients were Caucasians and were males. Most of the patients had unilateral tumors, and diffuse large B‐cell lymphoma (DLBCL) was the most common histologic type. The median OS was 112 months, while median CSS was not reached. Age ≥ 60 years was the strongest independent risk factor for worse OS and CSS, while non‐DLBCL histology was associated with better OS and CSS. Discussion Primary renal lymphoma is a rare lymphoma with increasing incidence in more recent years. In this study, we describe demographic, clinical, and pathological characteristics of PRL and factors affecting survival among these patients.
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Affiliation(s)
- Alankrita Taneja
- Department of Internal Medicine, Wayne State University School of Medicine, Detroit, MI, USA
| | - Vivek Kumar
- Department of Internal Medicine, Medical Oncology, Brigham and Women's Hospital, Boston, MA, USA.,Dana-Farber Cancer Institute, Boston, MA, USA
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