scholarly journals Extramedullary Plasmacytoma Mimicking Pancreatic Cancer: An Unusual Presentation

2016 ◽  
Vol 2016 ◽  
pp. 1-5
Author(s):  
Daniela Sciancalepore ◽  
Sergio Musci ◽  
Maria Rosaria Fracella ◽  
Grazia D’Alesio ◽  
Azzurra Sportelli ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Plasma Cell ◽  
Extramedullary Plasmacytoma ◽  
Endocrine Glands ◽  
Autologous Transplant ◽  
History Of ◽  
Remission Phase ◽  
Timing Of Onset ◽  
Gallbladder Fossa

Multiple myeloma is a plasma cell tumor that homes to and expands in the bone marrow and that, despite the new available drugs, remains incurable. Extramedullary plasmacytoma is a not frequent manifestation during the natural history of multiple myeloma and is frequently associated with plasma cell bone marrow infiltration. The most common locations for an EMP include the gastrointestinal tract, pleura, testis, skin, peritoneum, liver, endocrine glands, and lymph nodes. Primary involvement of the gallbladder fossa is exceedingly rare. In this report, we describe a patient with multiple myeloma who achieved a clinical and serological remission after autologous transplant but progressed rapidly at extramedullary site mimicking a second cancer (i.e., pancreatic or biliary cancer). In this case, the extramedullary localization was refractory to standard therapy, differently from bone marrow localization, but responded to lymphoma-like therapy. In this patient (i) the particular site of developing plasmacytoma is the gallbladder fossa, (ii) the timing of onset of this neoplasm is immediately after autologous transplant, and (iii) its disjunction from primary myeloma is that it appears in clinical and serological remission phase which may be confounding during the diagnostic approach simulating a different tumor (solid tumor).

Multiple Myeloma Presenting as Pulmonary, Gastric and Epidural Extramedullary Plasmacytomas: Synchronous Presentation.

Blood ◽  
2005 ◽  
Vol 106 (11) ◽  
pp. 5050-5050
Author(s):  
Maged Khalil ◽  
Candice Ruby ◽  
Zili He ◽  
Shetra Sivamurthy ◽  
Steier Williams ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Plasma Cell ◽  
Plasma Cells ◽  
Extramedullary Plasmacytoma ◽  
Significant Past Medical History ◽  
Upper Airways ◽  
Response To Chemotherapy ◽  
Gastric Mass ◽  
Extramedullary Plasmacytomas

Abstract Plasma cell tumors are lymphoid neoplastic proliferations of B cells that may be classified as multiple myeloma (MM), solitary bone plasmacytoma (SBP) and extramedullary plasmacytoma (EMP). The extramedullary plasmacytoma account for 1–2% of the total number of plasma-cell growths of which 80 % are originated on the head and neck and upper airways. Males are more frequently affected at sixth-seventh decade. Herein we are presenting a case of 51 years old male with synchronous multiple extramedullary plasmacytomas involving lung, stomach and spine, Presentation of a case 51 years old black male from St. Lucia with no significant past medical history, presented to the local hospital in St. Lucia with hematemesis. Endoscopy was performed and a growth in the stomach was found. He came to the US for treatment. When seen in our hospital, patient complained of black tarry stool, severe right sided chest pain radiating to the back, generalized body aches, fatigue and 10 Lbs. weight loss within the last 2 months Physical examination: revealed tenderness on the right side of chest and back, and decreased breath sound on the righ upper lobe, otherwise unremarkable Work up including CT scan of the chest/abdomen /pelvis showed an irregular right apical mass posteriorly with destruction of the adjacent second and third ribs posteriorly and in T2 and T3 vertebrae, diffuse lytic lesions involving the spines, sacrum, ribs and sternum. There was also a large irregular soft tissue mass the posterior aspect of the fundus of the stomach. Liver, spleen and lymph nodes were normal. Laboratory studies showed WBCs 9.8, Hg 6.9, Platlets 218, BUN 71, Cr. 5.2, Ca 13.4, albumin 3.4, B2 microglobulin 7.5, TP 11.4, LDH 1063, LFT’s all normal, Cea 00 ng/ml, AFP 6.0 ng/ml, Ca19-9 9.4 U/ml, PSA.97 ng/ml, iron study, folate, B12 all within normal range, serum protein electropheresis and immunofixation showed monoclonal spike in the Gamma region 53.8% (IgG Kappa and IgA Kappa), IgG 10917 mg/dl, IgA 85 mg/dl, IgM 16 mg/dl, urine protien elctrophersis showed 88 mg/dl M-spike in beta region, 24 hours urine was 2400 mg/24 h Bone marrow biopsy showed extensive infiltration with poorly differentiated plasma cells, flow cytometry consistent with plasma cell neoplasm, cytogenetics and FISH did not show any evidence of chromosome 13 deletion or trisomy 11. Gastric mass biopsy and lung mass biopsy showed plasma cells similar to the bone marrow infiltrate consistent with plasmacytoma. Diagnosis of multiple myeloma and multiple extramedullary plasmacytomas were made. Plasmaphersis was started because of worsening renal function despite aggressive hydration. Kidney function and calcium level normalized after 5 sessions of Plasmaphersis. Chemotherapy with Doxil, Vincrestine and dexamethasone (DVd) was started. Because of the persistent drop in hemoglobin from gastric mass bleeding, Radiation therapy to the gastric area was given (2300 cGy in 4 weeks) While on treatment he developed severe bilateral lower extremities weakness, MRI showed 8 cm epidural mass at the T8 level, the field of radiation was increased to include the new lesion along with Decadron. He developed severe oral mucositis, esophagitis pancytopenia, continue to bleed from the gastric mass, and finally developed an overwhelming VRE sepsis and shock. He was transferred to MICU and expired despite aggressive supportive care. Conclusion: MM can present as multiple extramedullary plasmacytomas. The response to chemotherapy is very poor The prognosis is very poor,

Single Cell RNA-Seq Reveals Clonal Consistency and Differential Malignancy in Extramedullary Plasmacytoma of Multiple Myeloma

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 4808-4808
Author(s):  
Shuang Geng ◽  
Jing Wang ◽  
Mingyi Chen ◽  
Wenming Wang ◽  
Yuhong Pang ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Single Cell ◽  
Plasma Cell ◽  
Peripheral Blood ◽  
Plasma Cells ◽  
Conflicts Of Interest ◽  
Extramedullary Plasmacytoma ◽  
Rna Seq ◽  
Malignant Plasma Cell

Abstract Extramedullary Plasmacytoma (EMP) is a minor yet devastating metastatic form of Multiple Myeloma (MM), shortening patients' survival from 10 years to 6 months on average. Genetic cause of EMP in MM is yet to be defined. Transcriptome difference between EMP+ patients and EMP- patients is studied here on single cell level by RNA Sequencing (RNA-Seq). We sorted CD38+CD138+ malignant plasma cells from bone marrow and peripheral blood samples by flow cytometry, then picked up single malignant plasma cell and performed single cell RNA-Seq with SmartSeq2 protocol followed by Tn5-based library preparation from bone marrow, peripheral blood and extramedullary tissue of EMP patients. From the single cell RNA-Seq results, in bone marrow we found differential gene expression between EMP+ and EMP- samples, such as CTAG2, STMN1 and RRM2. By comparing circulating malignant plasma cells in PBMC and malignant plasma cell from the sample EMP+ patient, we observed metastatic clone in blood with the same VDJ immunoglobulin heavy chain as in bone marrow. Several genes' expression of these metastatic cells are down-regulated than in bone marrow, such as PAGE2, GTSF1, DICER1. These genes may correlate with egress capability of MM cells into peripheral to become circulating plasma cells (cPCs), and EMP eventually. Disclosures No relevant conflicts of interest to declare.

scholarly journals Daratumumab Interferes with Flow Cytometric Evaluation of Multiple Myeloma

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 5630-5630 ◽  
Author(s):  
Sudhir Perincheri ◽  
Richard Torres ◽  
Christopher A Tormey ◽  
Brian R Smith ◽  
Henry M Rinder ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Flow Cytometry ◽  
Cell Population ◽  
Plasma Cell ◽  
Light Chain ◽  
Plasma Cells ◽  
Kappa Light Chain ◽  
Positive Events ◽  
History Of

Abstract The diagnosis of multiple myeloma (MM) requires the demonstration of clonal plasma cells at ≥10% marrow cellularity or a biopsy-proven bony or extra-medullary plasmacytoma, plus one or more myeloma-defining events. Clinical laboratories use multi-parameter flow cytometry (MFC) evaluation of cytoplasmic light chain expression in CD38-bright, CD45-dim or CD138-positive, CD45dim cells to establish plasma cell clonality with a high-degree of sensitivity and specificity. Daratumumab, a humanized IgG1 kappa monoclonal antibody targeting CD38, has been shown to significantly improve outcomes in refractory MM, and daratumumab was granted breakthrough status in 2013. Daratumumab is currently approved for treatment of MM patients who have failed first-line therapies. It has been noted that daratumumab can interfere in blood bank assays for antibody screening, as well as serum protein electrophoresis (SPEP). We describe for the first time daratumumab interference in the assessment of plasma cell neoplasms by MFC; daratumumab interfered with both CD38- and CD138-based gating strategies in three MM patients. Patient A is a 68 year old man with a 10 year history of MM who had failed multiple therapies. He had then been treated with daratumumab for two months, stopping therapy 25 days prior to bone marrow assessment. Patient B is a 53 year old man with a 3 year history MM who had failed numerous treatments. He had been receiving daratumumab monotherapy for two months at the time of his bone marrow studies. On multiple marrow aspirates at times of relapse prior to receiving daratumumab, both patients had demonstrated CD38-bright positive CD45dim/negative plasma cells expressing aberrant CD56, as well as kappa light chain restriction; mature B cells were polyclonal in both. Patient C is a 65 year old man with a four-year history of MM status post autologous stem cell transplantation, who had been receiving carfilzomib and pomalidomide following relapse and continues to have rising lambda light chains and rib pain. He now has abnormal plasma cells in blood worrisome for plasma cell leukemia. Bone marrow aspirates from patients A and B, and blood from patient C demonstrated near absence of CD38-bright events as detected by MFC (Figure 1). Hypothesizing that these results were due to blocking of the CD38 antigen by daratumumab, gating on CD138-positive events was assessed; surprisingly, virtually no CD138-positive events were detected by MFC. All 3 samples demonstrated a CD56-positive CD45dim population; when light chain studies were employed using specific gating on the CD56-positive population, light chain restriction was demonstrated in all patients (Figure 1). Aspirate morphology confirmed numerous abnormal, nucleolated plasma cells (Figure 2A), thus excluding a sampling error. CD138 and CD38 expression was also tested on the marrow biopsy cores from both patients. In contrast to MFC, immunohistochemistry (IHC) showed positive labeling of plasma cells with both CD138 (Figure 2B) and CD38 (Figure 2C). The reason for the labeling discrepancy between MFC and IHC is unknown. The different antibodies in the assays may target different epitopes; alternatively, tissue fixation/decalcification may dissociate the anti-CD38 therapeutic monoclonal from its target. Detection of clonal plasma cell populations is important for assessing response to therapy. Laboratories relying primarily on MFC to assess marrow aspirates without a concomitant biopsy may falsely diagnose remission or significant disease amelioration in daratumumab-treated patients. MFC is generally highly sensitive for monitoring minimal residual disease (MRD) in MM, but daratumumab-treated patients should have their biopsy evaluated to confirm the MRD assessment by MFC. We were able to detect large numbers of plasma cells and also demonstrate clonality in our patients based on an alternative MFC marker, aberrant CD56 expression, an approach that may not be possible in all cases. Figure 1 Flow cytometry showing near-absence of CD38-bright elements in the marrow of patient A (top panels). Gating on CD56-positive cells in the same sample reveals a kappa light chain-restricted plasma cell population (bottom panels). Figure 1. Flow cytometry showing near-absence of CD38-bright elements in the marrow of patient A (top panels). Gating on CD56-positive cells in the same sample reveals a kappa light chain-restricted plasma cell population (bottom panels). Figure 1 The marrow aspirate from Fig. 1 shows abnormal plasma cells (A). Immunohistochemistry on the concomitant biopsy shows the presence of numerous CD138-positive (B) and CD38-positive (C) plasma cells. Figure 1. The marrow aspirate from Fig. 1 shows abnormal plasma cells (A). Immunohistochemistry on the concomitant biopsy shows the presence of numerous CD138-positive (B) and CD38-positive (C) plasma cells. Disclosures No relevant conflicts of interest to declare.

scholarly journals Obstructive Jaundice as Initial Presentation of Multiple Myeloma: Case Presentation and Literature Review

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Yasir Khan ◽  
Iyad Mansour ◽  
Eric Ong ◽  
Manish Shrestha
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Plasma Cell ◽  
Bacterial Infections ◽  
Disease Patient ◽  
Initial Presentation ◽  
Malignant Plasma Cell ◽  
History Of ◽  
Plasma Cell Disorder

Multiple myeloma is a malignant plasma-cell disorder that primarily involves the bone marrow, but extramedullary involvement is becoming increasingly common (Bladé et al., 2012) both at initial presentation and follow-up. Most common initial presentations for multiple myeloma include generalized fatigue, renal insufficiency, bone pain, and recurrent bacterial infections. We present a case of a healthy 55-year-old man that presented to the emergency department with a three-week history of anorexia and jaundice without any past medical history. Patient’s initial labs were significant for hyperbilirubinemia and elevated liver function enzymes (AST, ALT, ALP, and GGT). Additional laboratory workup was significant for mild hypercalcemia and increased protein gap. MRI and ERCP suggested primary sclerosing cholangitis but were not diagnostic. Liver biopsy illustrated plasma-cell infiltration and bone marrow biopsy diagnosed multiple myeloma with extramedullary disease. Patient was started on dexamethasone, bortezomib, and cyclophosphamide, but, despite this aggressive regimen, the patient continued to decline. We take this opportunity to present this atypical presentation of a common hematological malignancy and review the associated literature.

scholarly journals Large Plasmacytoma Occupying the Upper Limb in a Myeloma Patient

Rare Tumors ◽  
2016 ◽  
Vol 9 (1) ◽  
pp. 4-6 ◽  
Author(s):  
Junichiro Takano ◽  
Kensuke Ohikata ◽  
Daisuke Nagase ◽  
Toru Igari ◽  
Kazuhiko Natori ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Female Patient ◽  
Upper Limb ◽  
Poor Prognosis ◽  
Extramedullary Plasmacytoma ◽  
Cell Leukemia ◽  
Myeloma Patient ◽  
Visceral Organ ◽  
Large Size

Extramedullary disease (EMD) is an issue for patients with multiple myeloma (MM), since extramedullary spread of MM is associated with an aggressive course and a poor prognosis. Moreover, the mechanism of EMD development is uncertain. Here, we present extensive extramedullary plasmacytoma occupying the left upper limb of a 66-year-old female patient with MM with an extremely aggressive course and multiple visceral organ involvement without bone marrow infiltration or plasma cell leukemia. EMD of this large size is extremely rare and this case may provide a clue for better understanding of clinical features of EMD in MM.

scholarly journals Multiple myeloma: circulating lymphocytes that express plasma cell antigens

Blood ◽  
1984 ◽  
Vol 64 (2) ◽  
pp. 352-356
Author(s):  
GJ Ruiz-Arguelles ◽  
JA Katzmann ◽  
PR Greipp ◽  
NJ Gonchoroff ◽  
JP Garton ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Plasma Cell ◽  
Peripheral Blood ◽  
Plasma Cells ◽  
Peripheral Blood Lymphocytes ◽  
Tumor Burden ◽  
B Cell Differentiation ◽  
Blood Lymphocytes ◽  
Bone Marrow Plasma

The bone marrow and peripheral blood of 14 patients with multiple myeloma were studied with murine monoclonal antibodies that identify antigens on plasma cells (R1–3 and OKT10). Peripheral blood lymphocytes expressing plasma cell antigens were found in six cases. Five of these cases expressed the same antigens that were present on the plasma cells in the bone marrow. Patients that showed such peripheral blood involvement were found to have a larger tumor burden and higher bone marrow plasma cell proliferative activity. In some patients, antigens normally found at earlier stages of B cell differentiation (B1, B2, and J5) were expressed by peripheral blood lymphocytes and/or bone marrow plasma cells.

scholarly journals Macroglossia reveals multiple myeloma

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
Maria Bonvicini ◽  
Davide Crapanzano ◽  
Susanna Fenu ◽  
Marco Giordano ◽  
Lorenzo Palleschi
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Differential Diagnosis ◽  
Arterial Hypertension ◽  
Supportive Care ◽  
Loss Of Weight ◽  
Bright Orange ◽  
History Of ◽  
Congo Red Staining ◽  
One Year

We present an eighty-year old man with a one year history of progressive macroglossia, dysphagia and loss of weight. He had a medical history of arterial hypertension and prostatic hypertrophy which he had under good therapeutic control. The entire tongue was swollen, had hard solidity and was slightly painful upon palpation. A tongue biopsy revealed an amyloid deposition as it coloured bright orange-red on Congo Red staining and lead us subsequently to the diagnosis of amyloidosis; then a bone marrow biopsy confirmed the diagnosis of multiple myeloma. The case was further evaluated by a multidisciplinary team who considered it appropriate to start a lowdose melphalan treatment combined with supportive care. When macroglossia in the tongue is confirmed to be amyloidosis the differential diagnosis should include systemic amyloidosis deposition and multiple myeloma.

scholarly journals Myeloma Cell Associated Therapeutic Protein Discovery Using Single Cell RNA-Seq Data

Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 4-5
Author(s):  
Lijun Yao ◽  
Reyka G Jayasinghe ◽  
Tianjiao Wang ◽  
Julie O'Neal ◽  
Ruiyang Liu ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Bone Marrow ◽  
Cell Surface ◽  
B Cell ◽  
Tumor Cells ◽  
Plasma Cell ◽  
Tissue Specificity ◽  
Plasma Cells ◽  
Expression Data ◽  
Intracellular Proteins

Multiple myeloma (MM) is a hematological cancer of the antibody-secreting plasma cells. Despite therapeutic advancements, MM remains incurable due to high incidence of drug-resistant relapse. In recent years, targeted immunotherapies, which take advantage of the immune system's cytotoxic defenses to specifically eliminate tumor cells expressing certain cell surface and intracellular proteins have shown promise in combating this and other B cell hematologic malignancies. A major limitation in the development of these therapies lies in the discovery of optimal candidate targets, which require both high expression in tumor cells as well as stringent tissue specificity. In an effort to identify potential myeloma-specific target antigens, we performed an unbiased search for genes with specific expression in plasma and/or B cells using single-cell RNA-sequencing (scRNAseq) of 53 bone marrow samples taken from 42 patients. By comparing >40K plasma cells to >97K immune cells across our cohort, we were able to identify a total of 181 plasma cell-associated genes, including 65 that encode cell-surface proteins and 116 encoding intracellular proteins. Of particular interest is that the plasma cells from each patient were shown to be transcriptionally distinct with unique sets of genes expressed defining each patient's malignant plasma cells. Using pathway enrichment analysis, we found significant overrepresentation of cellular processes related to B-Cell receptor (BCR) signaling, protein transport, and endoplasmic reticulum (ER) stress, involving genes such as DERL3, HERPUD1, PDIA4, PDIA6, RRBP1, SSR3, SSR4, TXNDC5, and UBE2J1. To note, our strategy successfully captured several of the most promising MM therapeutic targets currently under pre-clinical and clinical trials, including TNFRSF17(BCMA), SLAMF7, and SDC1 (CD138). Among these, TNFRSF17 showed very high plasma cell expression, with concomitant sharp exclusion of other immune cell types. To ascertain tissue specificity of candidate genes outside of the bone marrow, we analyzed gene and protein expression data from the Genotype-Tissue Expression (GTEx) portal and Human Protein Atlas (HPA). We found further support for several candidates (incl. TNFRSF17,SLAMF7, TNFRSF13B (TACI), and TNFRSF13C) as being both exclusively and highly expressed in lymphoid tissues. While several surface candidates were not found to be lymphocyte-restricted at the protein level, they remain relevant considerations as secondary targets for bi-specific immunotherapy approaches currently under development. To further investigate potential combinatorial targeting, we examine sample-level patterns of candidate co-expression and mutually-exclusive expression using correlation analysis. As the majority of our detected plasma cell-specific genes encode intracellular proteins, we investigated the potential utility of these epitopes as therapeutic targets via MHC presentation. Highly expressed candidates include MZB1, SEC11C, HLA-DOB, POU2AF1, and EAF2. We analyzed protein sequences using NetMHC and NETMHCII to predict high-affinity peptides for common class-I and class-II HLA alleles. To correlate MHC allelic preference with candidate expression in our cohort, we performed HLA-typing for 29 samples using Optitype. To support our scRNAseq-driven findings, we cross-referenced gene expression data with 907 bulk RNA-sequencing samples, including 15 from internal studies and 892 from the Multiple Myeloma Research Foundation (MMRF), as well as bulk global proteomics data from 4 MM cell lines (TIB.U266, RPMI8226, OPM2, MM1ST) and 4 patients. We see consistent trends across both cohorts, with high positive correlation (Pearson R ranging between 0.60 and 0.99) for a majority of genes when comparing scRNA and bulk RNA expression in the same samples. Our experimental design and analysis strategies enabled the efficient discovery of myeloma-associated therapeutic target candidates. In conclusion, this study identified a set of promising myeloma CAR-T targets, providing novel treatment options for myeloma patients. Disclosures Goldsmith: Wugen Inc.: Consultancy. DiPersio:Magenta Therapeutics: Membership on an entity's Board of Directors or advisory committees.

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