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Canine lymphoma

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https://www.readbyqxmd.com/read/30548472/canine-non-epitheliotropic-cd4-positive-cutaneous-t-cell-lymphoma-a-case-report
#1
Hitoshi Kondo, Yumiko Kagawa, Kinji Shirota, Peter F Moore, Masahiko Nagata
A 5-year-old, spayed female French Bulldog presented with multiple papules on the skin of the scapular area. Histopathological examination of punch biopsy samples revealed dense infiltration of small lymphoid cells in the superficial dermis and in areas surrounding hair follicles. Immunohistochemical analysis indicated that these cells were positive for CD3, CD4, and TCRαβ, but negative for CD1c, CD8α, CD8β, CD11c, CD20, CD45RA, CD90, MHC-II, and TCRγδ. In addition, CD45 was highly expressed, and the proliferation fraction was very low...
December 12, 2018: Veterinary Medicine and Science
https://www.readbyqxmd.com/read/30545928/new-molecular-and-therapeutic-insights-into-canine-diffuse-large-b-cell-lymphoma-elucidates-the-role-of-the-dog-as-a-model-for-human-disease
#2
Luca Aresu, Serena Ferraresso, Laura Marconato, Luciano Cascione, Sara Napoli, Eugenio Gaudio, Ivo Kwee, Chiara Tarantelli, Andrea Testa, Chiara Maniaci, Alessio Ciulli, Petra Hillmann, Thomas Bohnacker, Matthias P Wymann, Stefano Comazzi, Massimo Milan, Fulvio Riondato, Giulia Dalla Rovere, Mery Giantin, Diana Giannuzzi, Francesco Bertoni
No abstract text is available yet for this article.
December 13, 2018: Haematologica
https://www.readbyqxmd.com/read/30537967/tel-evax-a-genetic-vaccine-targeting-telomerase-for-treatment-of-canine-lymphoma
#3
Joseph A Impellizeri, Alessandra Gavazza, Eliana Greissworth, Anna Crispo, Maurizio Montella, Gennaro Ciliberto, George Lubas, Luigi Aurisicchio
BACKGROUND: we have recently shown that Tel-eVax, a genetic vaccine targeting dog telomerase (dTERT) and based on Adenovirus (Ad)/DNA Electro-Gene-Transfer (DNA-EGT) technology can induce strong immune response and increase overall survival (OS) of dogs affected by multicentric Diffuse Large B cell Lymphoma (DLBCL) when combined to COP therapy in a double-arm study. Here, we have utilized a clinically validated device for veterinary electroporation called Vet-ePorator™, based on Cliniporator™ technology currently utilized and approved in Europe for electrochemotherapy applications and adapted to electrogenetransfer (EGT)...
December 11, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/30533020/validation-of-epigenetic-mechanisms-regulating-gene-expression-in-canine-b-cell-lymphoma-an-in-vitro-and-in-vivo-approach
#4
Silvia Da Ros, Luca Aresu, Serena Ferraresso, Eleonora Zorzan, Eugenio Gaudio, Francesco Bertoni, Mauro Dacasto, Mery Giantin
Despite canine B-cell Lymphoma (BCL) representing the most common haematological tumour, epigenetic events driving development and progression are scarcely known. Recently, canine Diffuse Large BCL (DLBCL) DNA methylome by genome-wide CpG microarray has identified genes and pathways associated to pathogenesis. To validate data previously obtained by array analysis, the CLBL-1 cell line was used and the HOXD10, FGFR2, ITIH5 and RASAL3 genes were selected. CLBL-1 cells were treated with two hypomethylating drugs (HDs; IC50, 50% inhibitory concentration), i...
2018: PloS One
https://www.readbyqxmd.com/read/30522494/t-cell-lymphoma-in-the-eyelid-of-a-9-year-old-english-setter
#5
Lauge Hjorth Mikkelsen, Frederik Holm, Erik Clasen-Linde, Pernille Engraff, Steffen Heegaard
BACKGROUND: Eyelid tumours are frequently found in dogs, most of these being benign. In case of an ulcerating eyelid tumour, malignancy must be considered. We report a unique case of a low-grade peripheral T-cell lymphoma in the eyelid of a 9-year-old English Setter. CASE PRESENTATION: A 9-year-old Setter presented with a 6-month history of an eyelid ulcer. A malignant eyelid neoplasm was suspected, and the lesion was surgically excised. No other treatment was applied, and 19 months after excision the dog was still well...
December 6, 2018: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/30481986/corneoconjunctival-manifestations-of-lymphoma-in-three-dogs
#6
Seonmi Kang, Manbok Jeong, Kangmoon Seo
An 8-year-old Shih Tzu, a 5-year-old Maltese, and a 10-year-old Maltese presented with conjunctival hyperemia and peripheral corneal edema. Severe conjunctival thickening with varying degrees of corneal extension were observed. Cytological examination showed many large lymphocytes with malignant changes in the conjunctiva and were consistent with findings in fine-needle aspiration samples taken from the regional lymph nodes. They were diagnosed as having stage V multicentric lymphoma. When conjunctival thickening is observed in canine patients with multicentric lymphoma, conjunctival metastasis with infiltration of neoplastic lymphoid cells should be included in the differential diagnosis...
November 26, 2018: Journal of Veterinary Science
https://www.readbyqxmd.com/read/30474245/prevalence-of-cd20-cutaneous-epitheliotropic-t-cell-lymphoma-in-dogs-a-retrospective-analysis-of-24-cases-2011-2018-in-the-usa
#7
Trenton S Ewing, Jason B Pieper, Adam W Stern
BACKGROUND: Limited information is known about the baseline frequency of canine CD20 positive (+ ) cutaneous epitheliotropic T-cell lymphoma. A single canine case report has been published. OBJECTIVES: To characterize the baseline frequency of CD20+ staining in cases of canine cutaneous epitheliotropic T-cell lymphoma; to assess its values as a prognostic indicator. ANIMALS: Skin biopsies from 24 client-owned animals diagnosed with cutaneous epitheliotropic lymphoma were assessed...
November 25, 2018: Veterinary Dermatology
https://www.readbyqxmd.com/read/30458771/retrospective-analysis-of-doxorubicin-and-prednisone-as-first-line-therapy-for-canine-b-cell-lymphoma
#8
Sami Al-Nadaf, Robert B Rebhun, Kaitlin M Curran, Rachel O Venable, Katherine A Skorupski, Jennifer L Willcox, Jenna H Burton
BACKGROUND: A doxorubicin (DOX)-based chemotherapy protocol, CHOP, is the most effective treatment for canine high-grade B-cell lymphoma; however, the cost and time requirements associated with this protocol are not feasible for many pet owners. An alternative treatment option is the use of DOX, the most effective drug, in combination with prednisone. Prior studies with single-agent DOX included dogs with T-cell lymphoma, a known negative prognostic factor, which may have resulted in shorter reported survival times than if dogs with B-cell lymphoma were analyzed separately...
November 20, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/30425960/morphological-characterization-of-canine-retrobulbar-lymphoma
#9
Natthanet Sritrakoon, Kannika Siripattarapravat, Phudit Maneesaay, Chidozie J Amuzie, Aree Thayananuphat
This report characterized seven cases of canine retrobulbar lymphoma that have been diagnosed during 2008 to 2014 by immunophenotyping of CD3 and Pax5. Classification of lymphoma were performed according to the revised WHO guidelines. Four retrobulbar lymphomas were of T-cell origin, while the others were of B-cell. Out of 7 cases, four subtypes were diagnosed in this study; T-cell-rich large B-cell lymphoma (3/7), T-cell lymphoblastic lymphoma (2/7), peripheral T-cell lymphoma (1/7), and cutaneous nonepitheliotropic lymphoma (1/7)...
2018: Open Veterinary Journal
https://www.readbyqxmd.com/read/30356759/likelihood-of-neoplasia-for-diagnoses-modified-by-probability-terms-in-canine-and-feline-lymph-node-cytology-how-probable-is-probable
#10
Mary M Christopher, Chieh-Ko Ku
Background: Descriptive probability modifiers are used often to convey the uncertainty of a pathology diagnosis, but they also contribute to ambiguity in communication between pathologists and clinicians. Objectives: Our goal was to determine the frequency and use of probability modifiers in canine and feline lymph node cytology diagnoses, and to determine the actual likelihood of neoplasia for diagnoses with and without modifiers, based on the histologic outcome. Methods: Canine and feline lymph node cytology and histology reports over an 11-year period (2001-2011; n = 367) were evaluated retrospectively...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/30340657/pcr-based-clonality-analysis-of-antigen-receptor-gene-rearrangements-in-canine-cutaneous-plasmacytoma
#11
M Takanosu, K Okada, Y Kagawa
Plasmacytomas are discrete, B cell-derived, round cell tumours that sometimes are difficult to distinguish from canine cutaneous histiocytomas or T cell lymphosarcomas (lymphomas). Diagnosis of plasmacytomas relies on morphological observations and immunohistochemistry for multiple myeloma oncogene-1 (MUM-1) and cluster of differentiation 3 (CD3). Clonality testing often is used as an adjunct diagnostic tool to examine lymphoproliferative diseases. In this study, the sensitivity of PCR-based clonality analysis of antigen receptor gene rearrangements in canine cutaneous plasmacytomas was determined...
November 2018: Veterinary Journal
https://www.readbyqxmd.com/read/30286705/canine-cerebral-intravascular-lymphoma-neuropathological-and-immunohistochemical-findings
#12
Sara Degl'Innocenti, Nicola Della Camera, Cristian Falzone, Carlo Cantile
Intravascular lymphoma (IVL) is a rare angiotropic large-cell lymphoma in which neoplastic lymphocytes proliferate within the lumina of small blood vessels in the absence of a primary extravascular mass or leukemia. This study included 10 cases of canine IVL restricted to the CNS. Dogs had an average age of 8 years and neurological signs mainly referred to brain involvement such as depression, seizures, and ambulatory deficits. Gross examination at necropsy showed focal extensive or multiple hemorrhagic areas mainly distributed in the telencephalon and diencephalon...
October 5, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/30279973/correction-comparative-oncology-dna-sequencing-of-canine-t-cell-lymphoma-via-human-hotspot-panel
#13
J Tyson McDonald, Athena Kritharis, Afshin Beheshti, Monika Pilichowska, Kristine Burgess, Luisel Ricks-Santi, Elizabeth McNiel, Cheryl A London, Dashnamoorthy Ravi, Andrew M Evens
[This corrects the article DOI: 10.18632/oncotarget.25209.].
September 7, 2018: Oncotarget
https://www.readbyqxmd.com/read/30278836/immunohistochemical-profiling-of-canine-intestinal-t-cell-lymphomas
#14
Isao Matsumoto, Ko Nakashima, Yuko Goto-Koshino, James Kenn Chambers, Hajime Tsujimoto, Hiroyuki Nakayama, Kazuyuki Uchida
Human enteropathy-associated T-cell lymphoma (EATL) is classified into 2 distinct subgroups based on their phenotypes (type I and type II). Canine intestinal T-cell lymphoma can be morphologically classified into large and small cell lymphomas (LCL and SCL, respectively). Their association with human EATL or immunohistochemical and biological features has not been well characterized. In this study, the immunohistochemical profiles of 17 cases of LCL and 33 cases of SCL were evaluated with markers used for human EATL classification...
October 3, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/30262145/canine-and-feline-cutaneous-epitheliotropic-lymphoma-and-cutaneous-lymphocytosis
#15
REVIEW
Kathryn A Rook
Cutaneous lymphomas are divided into categories based on histologic evaluation of the skin and location of neoplastic lymphocytes. Epitheliotropic cutaneous lymphoma, also known as cutaneous T-cell lymphoma, is diagnosed when neoplastic lymphocytes show tropism for the epidermis and these cells infiltrate the epidermis and adnexae. In diagnosis of nonepitheliotropic cutaneous lymphoma, neoplastic lymphocytes are found mostly in the dermis and/or subcutis. Neoplastic cells are of either B-cell or T-cell origin...
January 2019: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/30239048/predominance-of-hypoechoic-tissue-changes-in-nine-dogs-with-malignant-prostatic-lymphoma
#16
Pamela Di Donato, Raffaela Zweifel, Kernt Koehler, Lorenzo Golini, Lorenzo Ressel, Martin Kramer, Ingmar Kiefer, Chee Kin Lim, Nele Ondreka
Neoplasia of the prostate is relatively uncommon in dogs with adenocarcinoma being the most common type. Non-epithelial tumors are rare and only individual cases of malignant lymphoma affecting the prostate have been reported. The purpose of this multi-institutional, retrospective, descriptive study was to characterize the ultrasonographic features of canine prostatic lymphoma. Inclusion criteria were an abdominal ultrasound and cytological/histological diagnosis of malignant prostatic lymphoma. Ultrasonographic features were recorded based on the original ultrasonographic reports and consensus opinion of two readers on the available image sets retrospectively...
September 21, 2018: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/30229963/a-case-of-canine-high-grade-t-cell-lymphoma-immunophenotypically-consistent-with-t-zone-lymphoma
#17
Cyril Parachini-Winter, Kaitlin M Curran, Duncan S Russell, Elena Gorman
A 9-year-old spayed female Curly Coated Retriever was referred for evaluation of generalized peripheral lymphadenomegaly. The dog was clinically healthy on presentation with no anomalies detected on complete blood count, serum biochemistry, urinalysis, or three-view thoracic radiographs. Fine-needle aspiration (FNA) and cytology of the peripheral lymph nodes were consistent with lymphoma with an intermediate-sized lymphoid population. Flow cytometry of peripheral lymph nodes was consistent with a homogeneous population of CD4+ T cells that had lost expression of the pan-leukocyte antigen CD45...
September 19, 2018: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/30213369/computerized-cytomorphometric-and-cytomorphological-analysis-of-canine-transmissible-venereal-tumours
#18
C Setthawongsin, S Tangkawattana, A Rungsipipat, S Techangamsuwan
Canine transmissible venereal tumour (CTVT) has three cytomorphological types: plasmacytic, lymphocytic and mixed type. Cytomorphometry, a method of computerized image analysis, has been used recently in veterinary medicine. This study compared the nuclear and cellular morphometric parameters (i.e. radius, diameter, perimeter and area) in different types of CTVT with other canine round cell tumours including lymphoma, mast cell tumour (MCT) and histiocytic tumour (HCT). We also evaluated the relationship between clinical information and the different CTVT cytomorphologic types...
August 2018: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/30173856/flow-cytometric-characterization-of-s-phase-fraction-and-ploidy-in-lymph-node-aspirates-from-dogs-with-lymphoma
#19
B Miniscalco, A Poggi, V Martini, E Morello, M Sulce, M Melega, A Borrelli, A Tarducci, F Riondato
Canine lymphoma is a multifaceted disease encompassing numerous entities with different prognosis. Objective assessment of the proliferation rate is of importance from the pathological and clinical perspectives. Different methods have been described in the literature to assess proliferation rate, including evaluation of Ki67 expression in fresh lymph node (LN) aspirates measured by flow cytometry (FC). This test has a high accuracy in discriminating between low- and high-grade lymphomas, and provides prognostic information among high-grade B-cell lymphomas...
May 2018: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/30159932/phenotypic-analysis-of-mice-xenografted-with-canine-epitheliotropic-cutaneous-t-cell-lymphoma-cells
#20
Miho Ikeuchi, Ryota Asahina, Hidetaka Nishida, Hiroaki Kamishina, Katsuya Kitoh, Hiroki Sakai, Sadatoshi Maeda
BACKGROUND: In canine epitheliotropic cutaneous T-cell lymphoma (ECTCL), neoplastic cells cause skin lesions and potentially metastasize to lymph nodes, blood and other organs. Murine models are potentially valuable for elucidating the molecular mechanisms responsible for regulation of ECTCL cell migration. HYPOTHESIS/OBJECTIVES: To describe a phenotype of mice xenografted with canine ECTCL cells (EO-1 cells). ANIMALS: Four NOD.CB17-Prkdcscid /J (NOD SCID) mice were used...
August 30, 2018: Veterinary Dermatology
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