A case of chronic disabling sensory-motor polyradiculitis occurring in a female patient and followed up for 18 months is reported. Clinical findings were papilledema, hypertrichosis, abnormal pigmentation of the skin, generalized edema, and spontaneous cutaneous necrosis. The diagnosis of a plasmocytic dyscrasia to IgA Lambda was made at a late stage of the disease. There were no signs of a solitary plasmocytoma or of diffuse myeloma. At autopsy, there were mild lesions in the peripheral nervous system, but no plasmocytic infiltration or amylosis was seen on optical or electron microscopy. This case is similar to other clinical cases reported mainly by Japanese authors.
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Curr Protein Pept Sci
January 2025
Center for Interdisciplinary Biosciences, Technology and Innovation Park P. J. Šafárik University, Trieda SNP 1, 040 11 Košice, Slovakia.
Neoplastic transformation of B cells of the post-germinative center can lead to oncohematological dyscrasias, which often results in an abnormal production of monoclonal immunoglobulin light chains. The non-physiological production of large amounts of IgG light chains leads to the formation of extracellular deposits called 'aggregomas' and rare conditions such as light chain crystal deposition disease. Kidney manifestations and heavy-chain deposition disease can also occur in plasma cell dyscrasias, emphasizing the role of IgG misfolding and aggregation.
View Article and Find Full Text PDFCurr Oncol
December 2024
Institute for Basic Sciences, Faculty of Physiotherapy, University of Physical Education, 31-571 Krakow, Poland.
Background: Multiple myeloma, a malignancy of plasma cells, often involves the disruption of vitamin D metabolism. Vitamin D, acting through its receptor (VDR), affects transcription factors like FOXO and sirtuins, which regulate cellular processes. The impact of physical activity on these markers in multiple myeloma patients is unclear.
View Article and Find Full Text PDFAnn Diagn Pathol
February 2025
Pathology Department and Translational Hematopathology Lab, Hospital Universitario Marqués de Valdecilla/IDIVAL, UNICAN, Santander, Spain. Electronic address:
Plasma cell neoplasia and POEMS syndrome patients may present Castleman disease (CD)-type features in lymph nodes. Our aim was to better characterize the histopathological patterns found in plasma cell neoplasia associated CD and to improve the detection of clonal plasma cell populations in the lymph node biopsies of these patients. Lymph node and bone marrow samples from six cases with plasma cell neoplasia associated CD, including POEMS syndrome and multiple myeloma were analyzed.
View Article and Find Full Text PDFFront Nephrol
November 2024
Division of Nephrology and Hypertension, Department of Medicine, University of Minnesota, Minneapolis, MN, United States.
A toxic monoclonal protein typically results in a single kidney pathology due to the specific biophysical characteristics of monoclonal proteins. Multiple monoclonal protein lesions are rarely reported and often portend a poor prognosis. We present a 57-year-old male who developed rapidly progressive glomerulonephritis after concealed ruptured diverticulitis.
View Article and Find Full Text PDFJ Assoc Physicians India
October 2024
Professor and Head, Department of Nephrology, Indira Gandhi Institute of Medical Sciences, Patna, Bihar, India.
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