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Gokhan Kuyumcu, Robert J Dawe, Miral Jhaveri
No abstract text is available yet for this article.
October 25, 2016: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
M V Barbado, M Medrano, T Caballero-Velázquez, I Álvarez-Laderas, L I Sánchez-Abarca, E García-Guerrero, J Martín-Sánchez, I V Rosado, J I Piruat, P Gonzalez-Naranjo, N E Campillo, J A Páez, J A Pérez-Simón
Although hematopoietic and immune system show high levels of the cannabinoid receptor CB2, the potential effect of cannabinoids on hematologic malignancies has been poorly determined. Here we have investigated their anti-tumor effect in multiple myeloma (MM). We demonstrate that cannabinoids induce a selective apoptosis in MM cell lines and in primary plasma cells of MM patients, while sparing normal cells from healthy donors, including hematopoietic stem cells. This effect was mediated by caspase activation, mainly caspase-2, and was partially prevented by a pan-caspase inhibitor...
October 25, 2016: International Journal of Cancer. Journal International du Cancer
Aaron S Rosenberg, Robin Ruthazer, Jessica K Paulus, David M Kent, Andrew M Evens, Andreas K Klein
BACKGROUND: Multiple myeloma/plasmacytoma-like posttransplantation lymphoproliferative disorder (PTLD-MM) is a rare complication of solid organ transplantation. Case series have shown variable outcomes, and survival data in the modern era are lacking. PATIENTS AND METHODS: A cohort of 212 PTLD-MM patients was identified in the Scientific Registry of Transplant Recipients between 1999 and 2011. Overall survival (OS) was estimated by the Kaplan-Meier method, and the effects of treatment and patient characteristics on OS were evaluated by Cox proportional hazards models...
September 17, 2016: Clinical Lymphoma, Myeloma & Leukemia
Asif Ali Fakhri, Paul David Rodrigue, Amena Fatima Fakhri
Extramedullary plasmacytoma is rare in patients with diagnosed multiple myeloma. Soft tissue plasmacytoma of the gallbladder is particularly uncommon and has been described in only a handful of cases. Diagnosis of gallbladder plasmacytoma with fluorine 18-fluorodeoxyglucose (F18-FDG) positron emission tomography/computed tomography (PET/CT) has not previously been reported. We present a 65-year-old female with a history of multiple myeloma who underwent a restaging F18-FDG-PET/CT which showed a focal area of hypermetabolic activity, corresponding to a nodular lesion within the posterior gallbladder wall...
2016: Journal of Clinical Imaging Science
Aharon M Feldman, Ziying Zhang, Thomas Buekers, Mohamed A Elshaikh
In contrast to multiple myeloma (MM) which exhibits diffuse bone marrow and other organ involvement, solitary plasmacytomas carry a favourable prognosis. Extramedullary plasmacytomas (EMP) are a unique form of plasma cell neoplasms. These tumours are rare in the female reproductive tract. Only 24 cases of gynaecologic plasmacytomas were reported to date (7 cases were solitary plasmacytomas and 17 cases were either part of disseminated MM with involvement of a gynaecologic organ or were lacking complete work-up to rule out MM)...
October 19, 2016: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
Debasis Gochhait, Pranab Dey, Neelam Verma
BACKGROUND: Multiple myeloma or plasmacytoma resulting in malignant effusion is rarely described in literature. AIMS: In this paper, we have studied the seven rare cases of plasma cell infiltration in effusion fluid. MATERIALS AND METHODS: We studied six cases of pleural fluid and one case of ascetic fluid. Detailed cytological features, clinical history, bone marrow examinations, serum electrophoresis, and immunofixation data were analyzed...
July 2016: Journal of Cytology
Duygu Has Şimşek, Serkan Kuyumcu, Bilge Bilgiç, Emine Göknur Işık, Cüneyt Türkmen, Işık Adalet
A 54-year-old woman with suspicion of neuroendocrine tumor (NET) was referred for 68Ga-DOTATATE positron emission tomography/computed tomography (CT) imaging due to clinical findings. A well-defined osteolytic lesion on the corpus of the third lumbar vertebra was evident on CT images with mild uptake of 68Ga-DOTATATE, which led to suspicion of NET metastasis. Histopathologic examination revealed solitary plasmacytoma of the bone. The patient received local external radiotherapy for plasmacytoma. This case indicatesthat other diseases expressing somatostatin receptors may be inaccurately reported as tumor recurrence and highlights the importance of meticulous evaluation of positive findings...
October 5, 2016: Molecular Imaging and Radionuclide Therapy
Clémentine Sarkozy, Sophie Kaltenbach, Pierre Faurie, Danielle Canioni, Françoise Berger, Alexandra Traverse-Glehen, Hervé Ghesquieres, Gilles Salles, Emmanuel Bachy, Marie-Alexandra Alyanakian, Olivier Hermine, Bénédicte Neven, Elizabeth Macintyre, Serge Romana, Thierry Jo Molina, Felipe Suarez, Vahid Asnafi, Julie Bruneau
Plasma-cell post-transplantation lymphoproliferative disorder (PC-PTLD) is a rare monomorphic PTLD entity divided into plasma cell myeloma (PCM) and plasmacytoma-like lesion (PLL) PTLD. To date, there are no exhaustive published cytogenetic data on PC-PTLD. We report array-based comparative genomic hybridization (aCGH) of 10 cases of PCM and PLL-PTLD. Patients had received kidney (n=6), heart (n=2), lung (n=1) or bone marrow (n=1) transplantation. There were six men and median age at time of PTLD was 56.5 years (3-74)...
October 17, 2016: Genes, Chromosomes & Cancer
Rathindranath Sarkar, Rudrajit Paul, Rajesh Pandey, T J Sau, Affifur Rahaman, Ayandip Nandi
No abstract text is available yet for this article.
June 2016: Journal of the Association of Physicians of India
Bibhas Saha Dalal, Piyabi Sarkar, Namrata Maity, Sayed Mahmood Nadeem
Soft tissue amyloidoma with features similar to plasmacytoma, in absence of systemic amyloidosis, is an extremely rare finding. We hereby report the case of a 77 year old man who presented with a painless, nodular swelling on chest wall, diagnosed as soft tissue amyloidoma with plasma cell infiltration. Congo red staining was done to prove the presence of amyloid which showed characteristic "apple-green" birefringence on polarized microscopy. The plasma cells were monoclonal in origin as demonstrated by serum protein and immunofixation electrophoresis...
October 2016: Indian Journal of Pathology & Microbiology
Ranjan Agrawal
No abstract text is available yet for this article.
October 2016: Indian Journal of Pathology & Microbiology
Qian Zhu, Xiong Zou, Rui You, Rou Jiang, Meng-Xia Zhang, You-Ping Liu, Chao-Nan Qian, Hai-Qiang Mai, Ming-Huang Hong, Ling Guo, Ming-Yuan Chen
BACKGROUND: Extramedullary plasmacytoma (EMP) is a rare malignant disease that lacks a unique clinical staging system to predict the survival of EMP patients and to design individualized treatment. Instead, clinicians have chosen to use the multiple myeloma (MM) staging system. METHODS: Forty-eight EMP patients treated between 1996 and 2014 were included in this study. The new clinical stages were established according to independent survival factors using Cox regression model...
October 8, 2016: BMC Cancer
Xiangxiang Zheng, Haibo Hu, Shiting Li
The long non-coding RNA (lncRNA) plasmacytoma variant translocation 1 (PVT1) has been identified as an oncogene in numerous diseases, and aberrant lncRNA PVT1 expression has been associated with the development of cancer. However, the underlying mechanism by which lncRNA PVT1 affects cell invasion in esophageal cancer has been not demonstrated. In the current study, the expression of lncRNA PVT1 was found to be increased in esophageal cancer specimens (n=77) by reverse transcription-quantitative polymerase chain reaction, and was correlated with tumor stage (P=0...
October 2016: Oncology Letters
Mariateresa Mirarchi, Emilio De Raffele, Francesco Bacci, Dajana Cuicchi, Ferdinando Lecce, Bruno Cola
: Solitary extramedullary plasmacitomas (SEMP) of the liver are very rare. We report the case of an elderly woman with a huge symptomatic SEMP of the liver mimicking hepatocellular carcinoma (HCC). The patient was a 89-year-old woman who presented with severe abdominal pain and a huge solid mass in the right hypochondrium. The laboratory data on admission revealed normal liver function tests. A multiphasic computed tomography (CT) showed a huge solid mass of the left hemiliver, hypoattenuating on noncontrast images, dishomogeneously hyperenhancing in the late arterial phase, with washout in the portal venous and equilibrium phases...
2016: Annali Italiani di Chirurgia
E Le Ray, L Belin, C Plancher, D Bouscary, Y M Kirova
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
Lianwen Zhang, Michael B Steele, Nathan Jenks, Jacquelyn Grell, Marshall Behrens, Rebecca Nace, Shruthi Naik, Mark J Federspiel, Stephen J Russell, Kah-Whye Peng
Tumor selective oncolytic vesicular stomatitis viruses (VSVs) are being evaluated in clinical trials. Here we report that the MPC-11 murine plasmacytoma model is so extraordinarily susceptible to oncolytic VSVs that a low dose of virus leads to extensive intratumoral viral replication, sustained viremia, intravascular coagulation and a rapidly fatal tumor lysis syndrome (TLS). Rapid softening, shrinkage and hemorrhagic necrosis of flank tumors was noted within 1-2 days after virus administration, leading to hyperkalemia, hyperphosphatemia, hypocalcemia, hyperuricemia, increase in plasma cell free DNA, lymphopenia, consumptive coagulopathy, increase in fibrinogen degradation products, decreased liver function tests, dehydration, weight loss, and euthanasia or death after 5-8 days...
September 27, 2016: Molecular Therapy: the Journal of the American Society of Gene Therapy
Renate Burger, Andreas Guenther, Katja Klausz, Matthias Staudinger, Matthias Peipp, Eva Maria Murga Penas, Stefan Rose-John, John Wijdenes, Martin Gramatzki
Interleukin (IL)-6 has an important role in the pathophysiology of multiple myeloma where it supports the growth and survival of the malignant plasma cells in the bone marrow. It belongs to a family of cytokines which use the glycoprotein (gp)130 chain for signal transduction, such as oncostatin M or leukemia inhibitory factor (LIF). Targeting IL-6 in plasma cell diseases is currently evaluated in clinical trials with monoclonal antibodies (mAbs). Here, efforts were made to elucidate the contribution of IL-6 and gp130 signaling in malignant plasma cell growth in vivo...
September 22, 2016: Haematologica
Ezher Hamza Dayisoylu, Ozcan Ceneli, Esra Zeypep Coskunoglu
INTRODUCTION: Plasma cell dyscrasias are characterized by a monoclonal neoplastic proliferation of plasma cells. Solitary bone plasmacytoma (SBP) is a local form of the disease with the vertebrae and long bones being the most frequently encountered sites. Its prevalence in the maxillofacial area is extremely rare. CASE PRESENTATION: A 70-year-old Caucasian male patient was referred for the extraction of his mobile premolar tooth with a poorly-defined radiolucent lesion...
July 2016: Iranian Red Crescent Medical Journal
Hussein Merza, Raj Sarkar
Plasma cell neoplasms are characterized by a neoplastic plasma cell lineage which produces a monoclonal immunoglobulin. These neoplasms can present as a single lesion (solitary plasmacytoma) or as multiple lesions (multiple myeloma). Solitary plasmacytomas most frequently occur in bone (plasmacytomas of bone), but can also be found outside bone in soft tissues (extramedullary plasmacytomas).
September 2016: Clinical Case Reports
Lydie Ocini Ngolet, Norbert Lamini N'soundhat, Eliane Ndounga, Innocent Kocko, Daphtone Chabel Nkouala Kidédé, Honoré Ntsiba
Secondary metastatic cutaneous plasmacytoma is a multiple extramedullary plasma cell proliferation involving skin. Its diagnosis is based on the identification of malignant plasma cells proliferation in the bone marrow and in the skin. Its occurrence is associated with advanced myeloma and a poor prognosis.
2016: Pan African Medical Journal
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