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https://www.readbyqxmd.com/read/28594699/solitary-iris-plasmacytoma-with-anterior-chamber-crystalline-deposits
#1
Andrew W Stacey, Alenka Lavric, Caroline Thaung, Samreen Siddiq, Mandeep S Sagoo
PURPOSE: To report a case of solitary iris plasmacytoma successfully treated with ruthenium plaque radiotherapy. METHODS: A 44-year-old white woman presented with pain in the right eye and raised intraocular pressure. Her medical history included breast cancer treated 11 years earlier with lumpectomy, lymph node clearance, chemotherapy, and radiotherapy. On examination, the right iris had a tan-colored mass with crystalline deposits visible on the mass surface and on the corneal endothelium...
July 2017: Cornea
https://www.readbyqxmd.com/read/28584670/solitary-plasmacytoma-of-the-mesentery-a-systematic-clinician-s-diagnosis
#2
Georgia Mitropoulou, Adamantia Zizi-Sermpetzoglou, Hippokrates Moschouris, Athanasios Kountourogiannis, Despoina Myoteri, Dionysios Dellaportas
INTRODUCTION: Plasmacytoma is an uncommon plasma cell neoplasm and its localized form is solitary plasmacytoma of the bone and solitary extramedullary plasmacytoma. Solitary plasmacytoma of the mesentery is extremely rare, reported only in a handful of cases. CASE PRESENTATION: A 47-year-old man with nonspecific abdominal complains was found to have an ill-defined mass on his mesenteric root. Laparoscopic biopsy and stepwise histopathological examination revealed a mesenteric plasmacytoma, and extensive imaging and laboratory investigations led to the diagnosis of the solitary mesenteric plasmacytoma...
2017: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/28566158/diagnostic-challenges-in-poems-syndrome-presenting-with-polyneuropathy-a-case-series
#3
Yuebing Li, Jason Valent, Payam Soltanzadeh, Nimish Thakore, Bashar Katirji
OBJECTIVE: To analyze the clinical characteristics of patients with POEMS presenting with polyneuropathy and discuss associated diagnostic challenges. METHOD: Retrospective analysis of 6 patients from 2 tertiary-care institutions. RESULTS: Six patients presented with progressive sensorimotor deficits predominantly or exclusively in the lower extremities and were diagnosed with POEMS syndrome. In 4 patients, a diagnosis of chronic inflammatory demyelinating polyradiculopathy (CIDP) was mistakenly made...
July 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28454444/anterior-mediastinum-invasion-by-multiple-myeloma-a-case-report
#4
Ying-Hui Xu, Lu-Guo Sun, Chao Sun, Ou Bai, Ting-Ting Liang, Ke-Wei Ma
Multiple myeloma (MM) is a clonal proliferation of malignant plasma cells in the bone marrow (BM) that secretes monoclonal paraproteins in the blood serum and urine. Bone marrow MM cells can invade and damage the functions of other tissues and organs, such as the lungs, spleen, liver, pancreas, kidneys and lymph nodes. However, the invasion of MM cells primarily located in the BM to the anterior mediastinum at the site of the thymus is an extremely rare event. The current study reports the case of a 53-year-old female who presented with MM with involvement of the anterior mediastinum...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28424097/unusual-course-of-generalized-lymph-node-primary-plasmacytoma-in-a-patient-with-sj%C3%A3-gren-s-syndrome-a-case-report
#5
Vadim R Gorodetskiy, Natalya A Probatova, Vladimir I Vasilyev
BACKGROUND: Primary lymph node plasmacytoma is a rare disease that typically involves lymph nodes of the neck. In only 15% of cases is the disease generalized. Here, we present a case of generalized lymph node plasmacytoma in a patient with Sjögren's syndrome with an unusual course. CASE PRESENTATION: A 48-year-old white woman presented to our hospital with enlargement of groups of lymph nodes, liver, and spleen. Her medical history was consistent with a 12-year course of Sjögren's syndrome...
April 20, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28360469/myelomatous-pleural-effusion-a-rare-case-entity-reported-from-a-tertiary-care-cancer-center-in-south-india
#6
Govind K Babu, Smitha C Saldanha, K N Lokesh, M C Suresh Babu, Akkamaha Devi Patil, Pretesh R Kiran, K C Lakshmaiah, D Lokanatha
Multiple myeloma (MM) is a plasma cell neoplasm and constitutes 10% of hematologic malignancies. Malignant myelomatous pleural effusions are very rare and occur in <1% of cases of MM. In this article, we report a rare case of a patient who initially presented with pleural effusion and was subsequently found to be secondary to MM with an underlying raised IgG paraprotein. The patient symptomatically improved and was in partial remission with palliative radiotherapy, VTD chemotherapy, and bisphosphonates.
March 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28293126/the-risk-of-renal-disease-is-increased-in-lambda-myeloma-with-bone-marrow-amyloid-deposits
#7
Piotr Kozlowski, Scott Montgomery, Rahel Befekadu, Victoria Hahn-Strömberg
BACKGROUND: Light chain amyloidosis (AL) is a rare deposition disease and is present in 10-15% of patients with myeloma (MM). In contrast to symptomatic AL in MM, presence of bone marrow (BM) amyloid deposits (AD) in MM is not connected to kidney damage. Renal AD but not BM-AD occur mostly in MM with lambda paraprotein (lambda MM). METHODS: We investigated amyloid presence in BM clots taken at diagnosis in 84 patients with symptomatic MM and compared disease characteristics in MM with kappa paraprotein (kappa MM)/lambda MM with and without BM-AD...
2017: Journal of Blood Medicine
https://www.readbyqxmd.com/read/28273183/-the-pathology-and-genetic-background-of-lymphoplasmacytic-lymphoma-waldenstr%C3%A3-m-macroglobulinaemia
#8
Botond Timár
Lymphoplasmacytic lymphoma is a rare low-grade B-cell lymphoma, which is composed of a mixture of small lymphocytes, plasmacytoid cells and plasma cells that typically infiltrate the bone marrow, but lymph nodes and rarely other organs can be involved as well. Waldenström macroglobulinaemia is a lymphoplasmacytic lymphoma with typical bone marrow involvement and is associated with detectable IgM paraproteins. The diagnosis of lymphoplasmacytic lymphoma/Waldenström macroglobulinaemia (LPL/WM) can be challenging, due to similarities to other small B-cell lymphomas with plasmacytic differentiation and/or with IgM paraproteins...
March 8, 2017: Magyar Onkologia
https://www.readbyqxmd.com/read/28247959/therapeutic-plasma-exchange-in-chronic-dysimmune-peripheral-neuropathies-a-10-year-retrospective-study
#9
Philippe Codron, Maud Cousin, Jean-François Subra, Vivien Pautot, Franck Letournel, Christophe Verny, Julien Cassereau
INTRODUCTION: Therapeutic plasma exchange (TPE) can be proposed in the treatment of chronic dysimmune peripheral neuropathies (CDPN). Actual guidelines are however based on few studies, and indications and protocols still remain to be clarified. We conducted a 10-year retrospective study in order to assess the effectiveness and tolerance of TPE in CDPN. METHODS: All patients treated for CDPN with TPE from October 2006 to March 2016 in the university hospital of Angers were included...
March 1, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/28219072/human-allergen-specific-igg-subclass-antibodies-measured-using-immunocap-technology
#10
Robert Movérare, Karin Blume, Peter Lind, René Crevel, Åsa Marknell DeWitt, Stella Cochrane
BACKGROUND: Knowledge of human IgG subclass antibody responses to various allergens has been hampered by a lack of reliable standardized assays. The aim here was to develop quantitative immunoassays for human IgG1, IgG2, and IgG3 antibodies using ImmunoCAP® technology and to evaluate their application. METHODS: Enzyme conjugates with isotype-specific monoclonal antibodies and calibrators composed of purified myeloma paraproteins were developed for each assay and used together with other standardized assay reagents for the Phadia® 100 instrument...
2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/28202168/paraprotein-associated-thrombotic-microangiopathy-expanding-the-spectrum-of-renal-disease-related-to-plasma-cell-dyscrasias
#11
Mercury Lin, Mark Haas
Plasma cell dyscrasias are associated with a variety of renal diseases, most resulting from the deposition of intact or altered monoclonal paraproteins within the renal parenchyma. Much less commonly, renal disease resulting from monoclonal gammopathies has been reported without actual accumulation of the paraprotein or a derivative of it within the kidney. One such instance involves thrombotic microangiopathy (TMA), which is a consequence of endothelial cell injury. New data from the Mayo Clinic indicate that the association of TMA with monoclonal gammopathies is far more frequent than previously appreciated...
March 2017: Kidney International
https://www.readbyqxmd.com/read/28185466/-analytical-interference-leading-to-a-diagnosis-of-lymphoproliferative-disorder
#12
I Kurfürstová, T Šálek, E Kadlčková, M Pšenčík
BACKGROUND: Monoclonal immunoglobulins (paraproteins) are produced by B lymphocytes in lymphoproliferative disorders. A single monoclonal immunoglobulin is homogeneous in terms of its structure, and it can occur in human serum at high concentration and cause significant interference in laboratory assays. CASE: We present a case of an 84-year-old man who was admitted to the hospital for progression of dyspnea. Basic laboratory tests showed a serum concentration of conjugated bilirubin, measured using the diazo spectrophotometric method, which was much higher than that of total bilirubin...
December 0: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28185460/-daratumumab-hope-for-myeloma-patients-a-challenge-for-clinical-laboratories
#13
T Jelínek, M Kořístka, Z Čermáková, R Hájek
Monoclonal antibodies represent a standard part in the treatment of oncologic patients, but their efficacy in multiple myeloma used to be unsatisfactory. Daratumumab monotherapy was approved by the American FDA in 2015, after unprecedented results were obtained in a heavily pre-treated group of patients. In 2016 daratumumab was approved in combination with lenalidomide and dexamethasone, or bortezomib and dexamethasone, for the treatment of myeloma patients who have received at least one prior therapy.The toxicity of the drug is low, and is dominated by infusion-related reactions in more or less half of patients...
December 0: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28182355/pure-red-cell-aplasia-associated-with-monoclonal-gammopathy-of-undetermined-significance-and-literature-review
#14
Hyunjung Gu, Woo-In Lee, You La Jeon, So Young Kang, Myeong Hee Kim, Tae Sung Park
BACKGROUND: Pure red cell aplasia (PRCA) is an uncommon disease which involves an almost complete absence of the erythroid lineage in bone marrow (BM) and causes severe anemia. Cases due to monoclonal gammopathy occurring in plasma cell disorder have been infrequently reported. Here we report a case of PRCA associated plasma cell disorder, especially monoclonal gammopathy of undetermined significance (MGUS). METHODS: A 55-year-old male visited the ER due to general weakness...
February 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28174184/multiple-myeloma-presenting-with-bilateral-ankle-pain-microangiopathy-and-complicated-by-streptococcal-meningitis-and-pneumocystis-carinii-pneumonia
#15
Louise Dunphy, Neeraj Singh, Elizabeth Keating
Multiple myeloma is characterised by the neoplastic proliferation of a single clone of plasma cells producing a monoclonal immunoglobulin. This clone of plasma cells proliferates in the bone marrow, resulting in extensive skeletal destruction with osteolytic lesions, osteopenia and pathological fractures. Additional disease-related complications include hypercalcaemia, renal insufficiency, anaemia and infection. We present the case of a 64-year-old woman presenting with rapid onset, painful distal symmetrical lower limb weakness and an acute kidney injury...
February 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28116769/capillary-electrophoresis-analysis-of-n-glycosylation-changes-of-serum-paraproteins-in-multiple-myeloma
#16
Zsuzsanna Kovacs, Adam Simon, Zoltan Szabo, Zsolt Nagy, Laszlo Varoczy, Ildiko Pal, Eszter Csanky, Andras Guttman
Multiple myeloma (MM) is an immedicable malignancy of the human plasma cells producing abnormal antibodies (also referred to as paraproteins) leading to kidney problems and hyperviscosity syndrome. In this paper we report on the N-glycosylation analysis of paraproteins from total human serum as well as the Fc and Fab κ/λ light chain fractions of papain digested immunoglobulins from multiple myeloma patients. Capillary electrophoresis with laser induced fluorescence detection (CE-LIF) was used for the analysis of the N-glycans after endoglycosidase (PNGase F) mediated sugar release and fluorophore labeling (APTS)...
January 24, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28115403/deceiving-proteins-a-case-of-lymphoma-and-high-creatinine
#17
El Hakem Abdelkarim Metraiah, Helen Regan, Johanna Louw, Dana Kidder
Estimation of kidney function by measuring serum creatinine is one the commonest laboratory tests conducted in clinical practice. Enzymatic methods are often used to measure serum creatinine. Clinicians should be aware of the limitations of these methods, such as test interference with paraproteins.We present a case of falsely elevated serum creatinine in a patient referred for renal biopsy. The combination of fluctuating creatinine and normal blood urea level was unusual. Serum protein electrophoresis revealed the presence of an IgM paraprotein...
January 23, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28106236/chorioretinal-folds-in-a-patient-with-multiple-myeloma-treated-with-stem-cell-transplant
#18
Jia S Poon, Kaveh Vahdani, Adam P Booth
PURPOSE: To report an unusual case of bilateral choroidal folds related to multiple myeloma. METHODS: In this case report, fundus photography, fundus fluorescein angiography, fundus autofluorescence, and B-ultrasonography were used to assess posterior segment changes. RESULTS: A 55-year-old woman with history of multiple myeloma was found to have abnormal fundi. Clinical examination and investigations confirmed chorioretinal folds, which was considered to be related to myeloma...
March 10, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28101022/necrobiotic-xanthogranuloma-in-a-patient-with-multiple-myeloma
#19
Marlies Wruhs, Robert Feldmann, Isabelle Sawetz, Friedrich Breier, Andreas Steiner
An 82-year-old woman presented with a 9-month history of multiple, well-defined skin lesions on her neck and upper chest, progressively increasing in size. Histological examination of a skin biopsy showed a regular epidermis. In the dermis, granulomatous changes with central necrobiosis were found which extended focally into the subcutaneous fat. The necrobiotic areas were surrounded by Touton cells and foreign-body giant cells. Laboratory analysis revealed leucopenia. Serum electrophoresis and immunofixation disclosed the presence of an IgG-λ paraprotein...
September 2016: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28076910/treatment-of-patients-with-waldenstr%C3%A3-m-macroglobulinaemia-clinical-practice-guidelines-from-the-myeloma-foundation-of-australia-medical-and-scientific-advisory-group
#20
Dipti Talaulikar, Constantine S Tam, Douglas Joshua, Joy Phoebe Ho, Jeff Szer, Hang Quach, Andrew Spencer, Simon Harrison, Peter Mollee, Andrew W Roberts, Noemi Horvath, Cindy Lee, Andrew Zannettino, Ross Brown, Bradley Augustson, Wilfrid Jaksic, John Gibson, Anna Kalff, Anna Johnston, Judith Trotman, Akash Kalro, George Grigoriadis, Chris Ward, H Miles Prince
Waldenström macroglobulinaemia (WM) is an indolent B-cell malignancy characterised by the presence of immunoglobulin M (IgM) paraprotein and bone marrow infiltration by clonal small B lymphocytes, plasmacytoid lymphocytes and plasma cells. The symptoms of WM are protean, often follow an asymptomatic phase and may include complications related to the paraneoplastic effects of IgM paraprotein. The revised 2016 World Health Organization classification includes the MYD88 L265P mutation, which is seen in >90% of cases, within the diagnostic criteria for WM...
January 2017: Internal Medicine Journal
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