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Gilani SI, Buglioni A, Cornell LD. IgG4-related kidney disease: Clinicopathologic features, differential diagnosis, and mimics. Semin Diagn Pathol 2024; 41:88-94. [PMID: 38246802 DOI: 10.1053/j.semdp.2023.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 12/11/2023] [Indexed: 01/23/2024]
Abstract
IgG4-related kidney disease (IgG4-RKD) encompasses all forms of kidney disease that are part of IgG4-related disease (IgG4-RD). First recognized as IgG4-related tubulointerstitial nephritis (IgG4-TIN), and then IgG4-related membranous glomerulonephritis (IgG4-MGN), we now recognize additional patterns of interstitial nephritis, glomerular disease, and vascular disease that can be seen as part of IgG4-RKD. The clinical presentation is variable and can include acute or chronic kidney injury, proteinuria or nephrotic syndrome, mass lesion(s), and obstruction. While usually associated with other organ involvement by IgG4-RD, kidney-alone involvement is present in approximately 20 % of IgG4-RKD. Compared to IgG4-RD overall, patients with IgG4-RKD are more likely to show increased serum IgG4 or IgG, and more likely to have hypocomplementemia. In this review, we extensively cover other types of autoimmune and plasma cell-rich interstitial nephritis, mass forming inflammatory diseases of the kidney, and other mimics of IgG4-TIN, in particular ANCA-associated disease.
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Affiliation(s)
- Sarwat I Gilani
- Department of Pathology and Laboratory Medicine, University of Texas Health Science Center at San Antonio, TX, USA
| | - Alessia Buglioni
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Lynn D Cornell
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA.
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Bolocan VO, Diaconu GF, Secareanu M, Manolescu LSC, Jinga V, Costache MG, Popa GA, Medar C. Renal Sinus Pathologies Depicted by CT Imaging: A Pictorial Review. Cureus 2024; 16:e57087. [PMID: 38681436 PMCID: PMC11052927 DOI: 10.7759/cureus.57087] [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: 03/26/2024] [Indexed: 05/01/2024] Open
Abstract
Diverse conditions comprise the spectrum of renal sinus pathologies, which have diagnostic and therapeutic implications for patients. Using CT imaging as a lens, this exhaustive review examines the representation of these pathologies. The article begins with a concise synopsis of renal anatomy and the specialized CT methodologies utilized to achieve excellent visualization. Transformational cell carcinoma, leiomyosarcoma, renal cell carcinoma, multilocular nephroma, and lymphoma are among the tumoral origins of the renal sinus pathologies that are investigated. Further, vascular pathologies including fistulas, hematomas, and aneurysms are included in the discourse, along with parapelvic and peripelvic cysts, and lipomatosis. In addition to urolithiasis and encrusted uretero-pyelitis, the review examines the consequences of metal toxicity and non-neoplastic conditions. With a focus on critical CT imaging findings that aid in the provision of an accurate diagnosis, every pathology is meticulously examined. With the intention of improving clinical decision-making and patient care, this article intends to function as a valuable resource for radiologists, clinicians, and researchers who are engaged in the interpretation and comprehension of renal sinus pathologies.
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Affiliation(s)
- Vlad-Octavian Bolocan
- Department of Clinical Laboratory of Radiology and Medical Imaging, Clinical Hospital "Prof. Dr. Theodor Burghele", Bucharest, ROU
- Department of Fundamental Sciences, Faculty of Midwifery and Nursing, University of Medicine and Pharmacy "Carol Davila", Bucharest, ROU
| | - Georgian-Florentin Diaconu
- Department of Clinical Laboratory of Radiology and Medical Imaging, Clinical Hospital "Prof. Dr. Theodor Burghele", Bucharest, ROU
| | - Mihaela Secareanu
- Department of Clinical Laboratory of Radiology and Medical Imaging, Clinical Hospital "Prof. Dr. Theodor Burghele", Bucharest, ROU
| | - Loredana Sabina Cornelia Manolescu
- Department of Fundamental Sciences, Faculty of Midwifery and Nursing, University of Medicine and Pharmacy "Carol Davila", Bucharest, ROU
| | - Viorel Jinga
- Department of Urology, Clinical Hospital "Prof. Dr. Theodor Burghele", Bucharest, ROU
- Department of Urology, Faculty of Medicine, University of Medicine and Pharmacy "Carol Davila", Bucharest, ROU
- Medical Sciences Section, Academy of Romanian Scientists, Bucharest, ROU
| | - Maria-Glencora Costache
- Department of Fundamental Sciences, Faculty of Midwifery and Nursing, University of Medicine and Pharmacy "Carol Davila", Bucharest, ROU
| | - Gelu Adrian Popa
- Department of Radiology and Medical Imaging, Clinical Hospital of Emergency "Sf Ioan", Bucharest, ROU
| | - Cosmin Medar
- Department of Clinical Laboratory of Radiology and Medical Imaging, Clinical Hospital "Prof. Dr. Theodor Burghele", Bucharest, ROU
- Department of Fundamental Sciences, Faculty of Midwifery and Nursing, University of Medicine and Pharmacy "Carol Davila", Bucharest, ROU
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