1
|
Wolfesberger B, Skor O, Hammer SE, Flickinger I, Kleiter M, Rütgen BC, Schwendenwein I, Tichy A, Hittmair KM, Degasperi B, Fuchs-Baumgartinger A. Does categorisation of lymphoma subtypes according to the World Health Organization classification predict clinical outcome in cats? J Feline Med Surg 2016; 19:897-906. [DOI: 10.1177/1098612x16666119] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Objectives The purpose of this study was to specify lymphoma subtypes according to the World Health Organization (WHO) classification in a group of cats and to investigate their potential prognostic value. Methods Records of cats from the University of Veterinary Medicine Vienna suffering from lymphoma were reviewed in this retrospective study. To diagnose various subtypes specified in the WHO classification, histopathological and immunohistochemical examinations, as well as clonality assays in some cases, were performed. Results Of the 30 cats included in this study and classified according to the WHO guidelines, peripheral T-cell lymphoma was the most prevalent lymphoma subtype (37% of cases; n = 11), followed by diffuse large B-cell (23%; n = 7), intestinal T-cell (10%; n = 3), T-cell-rich B-cell (10%; n = 3), large granular lymphocytic (7%; n = 2), anaplastic large T-cell (7%; n = 2), B-cell small lymphocytic (3%; n = 1) and T-cell angiotropic lymphoma (3%; n = 1). The median survival time (MST) was 5.4 months (range 6 days to 2.2 years), with two cats still alive after 1.7 and 2.0 years, respectively. Treating cats prior to chemotherapy with glucocorticoids did not worsen their prognosis. Adding to chemotherapy, radiotherapy or surgery did not improve the clinical outcome. We observed that patients with intestinal T-cell lymphoma lived significantly longer (MST 1.7 years) than those with a diffuse large B-cell (MST 4.5 months) or peripheral T-cell lymphoma (MST 6.1 months). Cats with T-cell-rich B-cell lymphoma survived significantly longer (MST 1.2 years) than those with a diffuse large B-cell lymphoma. Conclusions and relevance A detailed diagnosis of feline lymphoma can be obtained by allocating different subtypes according to the WHO classification. From the eight detected lymphoma subtypes, two, intestinal T-cell lymphoma and T-cell-rich B-cell lymphoma, showed promising survival times in cats.
Collapse
Affiliation(s)
- Birgitt Wolfesberger
- Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Ondrej Skor
- Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Sabine E Hammer
- Department of Pathobiology, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Irene Flickinger
- Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Miriam Kleiter
- Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Barbara C Rütgen
- Department of Pathobiology, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Ilse Schwendenwein
- Department of Pathobiology, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Alexander Tichy
- Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Katharina M Hittmair
- Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Brigitte Degasperi
- Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | | |
Collapse
|
2
|
Sakurai M, Azuma K, Nagai A, Fujioka T, Sunden Y, Shimada A, Morita T. Neurolymphomatosis in a cat. J Vet Med Sci 2016; 78:1063-6. [PMID: 26960326 PMCID: PMC4937145 DOI: 10.1292/jvms.15-0553] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 9-year-old male mixed breed cat showed chronic progressive neurological symptoms, which are represented by ataxia and seizures. At necropsy, spinal roots and spinal ganglions at the level of sixth cervical nerve to second thoracic nerve were bilaterally swollen and replaced by white mass lesions. Right brachial plexus and cranial nerves (III, V and VII) were also swollen. A mass lesion was found in the right frontal lobe of the cerebrum. Histologically, neoplastic lymphocytes extensively involved the peripheral nerves, and they infiltrated into the cerebral and spinal parenchyma according to the peripheral nerve tract. Immunohistochemically, most neoplastic lymphocytes were positive for CD20. The clinical and histological features in this case resemble those of neurolymphomatosis in humans.
Collapse
Affiliation(s)
- Masashi Sakurai
- Department of Veterinary Pathology, Yamaguchi University, Yamaguchi, Yamaguchi 753-8511, Japan
| | | | | | | | | | | | | |
Collapse
|
3
|
Chung TH, Lamm C, Choi YC, Lee JW, Yu D, Choi US. A rare case of hepatic T-cell rich B-cell lymphoma (TCRBCL) in a juvenile dog. J Vet Med Sci 2014; 76:1393-7. [PMID: 25283946 PMCID: PMC4221174 DOI: 10.1292/jvms.14-0088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 7-month-old castrated male
French Bull dog was presented with vomiting, lethargy, anorexia and weight loss of 2 weeks
duration. The patient’s history and clinical manifestations of suspected hepatopathy were
subjected to ultrasonography, radiography, biochemical investigations and cytology of
hepatic lesion. The cytologic impression was hepatic lymphoma, which was later confirmed
by histopathology. The neoplastic cells were strongly diffusely immunoreactive for PAX5,
but not immunoreactive for CD3, and B lymphocyte specific clonal proliferation was
detected using by assay of antigen receptor rearrangement. Large numbers of immunoreactive
mature non-neoplastic lymphocytes were admixed with the neoplastic cell population.
Therefore, the immunohistochemical results were definitively consistent with a T-cell rich
B-cell lymphoma (TCRBCL). This is the first description of a hepatic TCRBCL in a juvenile
dog showing a poor response to aggressive chemotherapy.
Collapse
Affiliation(s)
- Tae-Ho Chung
- Department of Animal Science, Joongbu University, Gumsan-gun, Chungnam 312-702, South Korea
| | | | | | | | | | | |
Collapse
|
4
|
Newton JA, de Vicente F, Haugland SP, Scase TJ, Helm J. Extra-nodal subcutaneous Hodgkin’s-like lymphoma and subsequent regression in a cat. J Feline Med Surg 2014; 17:543-7. [DOI: 10.1177/1098612x14541262] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hodgkin’s-like lymphoma is a slow growing neoplasm, usually affecting the lymph nodes of the head and neck, which has been sporadically described in veterinary patients. This report describes the clinical and histopathological features in a 9-year-old male neutered Siamese cat that presented with a 6 week history of mid-dorsocranial swelling. Immunohistochemistry demonstrated positive staining for CD79a, paired box protein and B lymphocyte antigen-36, with variable, weak-to-moderate cytoplasmic staining for human leukocyte antigen-DR and CD18, and negative staining for antimacrophage antibody. The diagnosis based on incisional biopsy was Hodgkin’s-like lymphoma; however, no evidence of neoplasia was found following wide surgical excision. This case report demonstrates two unreported items of note: the novel extranodal site of Hodgkin’s-like lymphoma in a cat and tumour regression following initial biopsy. It is hypothesised that the surgical trauma of biopsying the lesion or the introduction of foreign material may have caused the regression of the neoplastic cells through induction of an anti-tumour immune or inflammatory response.
Collapse
Affiliation(s)
- Jamie A Newton
- School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Felipe de Vicente
- School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | | | | | - Jenny Helm
- School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| |
Collapse
|
5
|
Tranchina MM, Scott DW, McDonough SP. CD3+ and BLA.36+ cells do not occur in the epidermis and adnexal epithelia of normal skin from the dorsolateral trunk of cats. J Feline Med Surg 2010; 12:790-3. [PMID: 20817525 DOI: 10.1016/j.jfms.2010.06.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 06/10/2010] [Accepted: 06/22/2010] [Indexed: 11/24/2022]
Abstract
A small population of resident T-lymphocytes is present in the normal epidermis of humans, mice, and rats. However, resident epidermal lymphocytes have not been reported in the normal skin of the cat. Skin-biopsy specimens from the normal skin of the dorsolateral trunk from 30 cats were examined histologically and immunohistochemically for the presence of lymphocytes, CD3+ cells, and BLA.36+ cells in epidermis and adnexal epithelia. All examinations were negative. It appears that lymphocytes occur rarely, if at all, in the epidermis and adnexal epithelial of normal cat skin. Hence, the presence of lymphocytes in these structures should be considered abnormal.
Collapse
Affiliation(s)
- Michelle M Tranchina
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | | | | |
Collapse
|
6
|
Pohlman LM, Higginbotham ML, Welles EG, Johnson CM. Immunophenotypic and Histologic Classification of 50 Cases of Feline Gastrointestinal Lymphoma. Vet Pathol 2009; 46:259-68. [DOI: 10.1354/vp.46-2-259] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The purpose of this study was to determine the immunophenotype and histologic classification of 50 cases of feline gastrointestinal lymphoma. Classification was determined using the National Cancer Institute Working Formulation and the Revised European and American Lymphoma/ World Health Organization classification system. Tissue sections were stained with HE, phosphotungstic acid hematoxylin, anti-CD3, anti-CD79a, and anti-BLA.36. Overall, B-cell tumors predominated at 54% (27/50), including 16 diffuse large with immunoblastic nuclear type, 2 diffuse large with centroblastic nuclear type, 3 small lymphocytic, 4 lymphocytic intermediate type, and 2 T-cell-rich large B-cell lymphomas. T-cell tumors comprised 38% (19/50), including 15 epitheliotropic small lymphocytic and 4 lymphoblastic. Three tumors (6%) were nonreactive for B- and T-cell markers and had eosinophilic cytoplasmic granules when stained with HE. Gastric tumors were diagnosed in 24% (12/50) of cats, and 18% (9/50) were present only in the stomach. All gastric lymphomas were of B-cell lineage. Small intestinal lymphoma predominated, with 74% (37/50) of cats affected: T-cell tumors comprised 52% (19/37); 38% (14/37) were B-cell tumors; 8% (3/37) were nonreactive for B- and T-cell markers; and 2% (1/37) expressed both CD3 and BLA.36. Of the 8 cats (16%) that had lymphoma of the large intestine, 88% (7/8) had B-cell tumors and 12% (1/8) had T-cell tumors. The strongest association between gastrointestinal lymphoma immunophenotype, histologic classification, and location occurred in the stomach, where there was a predominance of diffuse large B-cell lymphoma of immunoblastic nuclear type.
Collapse
Affiliation(s)
- L. M. Pohlman
- Department of Pathobiology, Auburn University, Auburn, AL
| | | | - E. G. Welles
- Department of Pathobiology, Auburn University, Auburn, AL
| | - C. M. Johnson
- Department of Pathobiology, Auburn University, Auburn, AL
| |
Collapse
|
7
|
NAKAMOTO Y, OZAWA T, UCHIDA K, OMORI K, HASE K, NAKAICHI M. Primary Intra-Axial B-Cell Lymphoma in a Cat. J Vet Med Sci 2009; 71:207-10. [DOI: 10.1292/jvms.71.207] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Yuya NAKAMOTO
- Ozawa Animal Hospital
- The United Graduate School of Veterinary Science, Yamaguchi University
| | | | - Kazuyuki UCHIDA
- Department of Veterinary Pathology, Graduated School of Agricultural and Life Sciences, The University of Tokyo
| | | | | | - Munekazu NAKAICHI
- The United Graduate School of Veterinary Science, Yamaguchi University
- Department of Veterinary Radiology, Faculty of Agriculture, Yamaguchi University
| |
Collapse
|
8
|
Waly NE, Gruffydd-Jones TJ, Stokes CR, Day MJ. Immunohistochemical Diagnosis of Alimentary Lymphomas and Severe Intestinal Inflammation in Cats. J Comp Pathol 2005; 133:253-60. [PMID: 16213517 DOI: 10.1016/j.jcpa.2005.05.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2004] [Accepted: 05/23/2005] [Indexed: 11/23/2022]
Abstract
Intestinal tissue samples were examined from 32 cats in which a histopathological diagnosis of alimentary lymphoma or multicentric lymphoma affecting the gastrointestinal tract had been made. These samples were re-evaluated histopathologically and serial sections were examined immunohistochemically with antisera specific for the lymphoid markers CD3, CD79a and BLA-36 and for class II molecules of the major histocompatability complex. The cats ranged in age from 4-16 years (median 10.5 years). The main presenting clinical signs were vomiting, diarrhoea and weight loss. The majority of alimentary lymphomas were of the B-cell type (n=15), whereas cases of T-cell lymphoma were fewer in number (n=8). Four cats had lymphoma of a mixed T-and B-cell phenotype. In five of the cats, immunohistochemistry suggested an inflammatory process, in contradiction to the original histopathological diagnosis of lymphoma. Immunolabelling would appear to be a useful adjunct to histopathology in classifying cases of feline alimentary lymphoma, and may help in distinguishing lymphoma from severe intestinal inflammation.
Collapse
Affiliation(s)
- N E Waly
- Division of Companion Animals, School of Clinical Veterinary Science, University of Bristol, Langford House, Langford, Bristol BS40 5DU, UK
| | | | | | | |
Collapse
|
9
|
Fernandez NJ, West KH, Jackson ML, Kidney BA. Immunohistochemical and histochemical stains for differentiating canine cutaneous round cell tumors. Vet Pathol 2005; 42:437-45. [PMID: 16006603 DOI: 10.1354/vp.42-4-437] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Immunohistochemical and histochemical stains are useful adjunct techniques in the diagnosis of canine cutaneous round cell tumors, which can appear histologically similar. We applied a panel of monoclonal antibodies (recognizing tryptase, chymase, serotonin for mast cells; CD1a, CD18, MHC class II for histiocytes; CD3 for T lymphocytes; CD79a for B lymphocytes and plasma cells) and one histochemical stain (naphthol AS-D chloroacetate for chymase activity) to formalin-fixed, paraffin-embedded sections of canine cutaneous mast cell tumors, histiocytomas, lymphosarcomas, plasmacytomas, and unidentified round cell tumors. Of 21 tumors with a histologic diagnosis of mast cell tumor, 7/7 (100%) grade I, 6/7 (85.7%) grade II, and 3/7 (42.9%) grade III tumors were diagnosed as mast cell tumors based on positive staining for tryptase antigen and chymase activity. Mast cells were positive for both tryptase antigen and chymase activity, indicating equal efficacy of tryptase immunohistochemistry and chymase histochemistry. Chymase was detected immunohistochemically in both tumor and nontumor cells, while serotonin was not detected in most mast cell tumors, and thus, neither was useful in the diagnosis of mast cell tumors. Immunohistochemistry to detect CD18 and MHC class II was equally effective in staining histiocytomas, although lymphosarcoma must be ruled out through the use of CD3 and CD79a immunohistochemistry. Immunohistochemistry using three different monoclonal antibodies to human CD1a showed no cross-reactivity in canine histiocytomas and was not useful. A final diagnosis was obtained for 4/5 (80%) of the unidentified tumors, indicating the usefulness of multiple stains in poorly differentiated round cell tumors.
Collapse
Affiliation(s)
- N J Fernandez
- Department of Veterinary Pathology, Western College of Veterinary Medicine, 52 Campus Drive, Saskatoon, SK S7N 5B4, Canada
| | | | | | | |
Collapse
|
10
|
Stoppini R, Gilger BC, Malarkey DE, Ratto A, Brigati G. Bilateral nodular lymphocytic conjunctivitis in a horse. Vet Ophthalmol 2005; 8:129-34. [PMID: 15762926 DOI: 10.1111/j.1463-5224.2005.00349.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Russian jumper horse presented because of an ocular perilimbal conjunctival mass and, on clinical examination, two bilateral conjunctival masses were found, of different size and conformation. Attempts at complete excision of the left eye mass and excisional biopsy of the right eye mass were performed. The left eye mass recurred rapidly, but resolved completely after topical corticosteroid therapy. The two lesions had similar histopathologic features, characterized by focal, chronic, primarily lymphocytic conjunctivitis with follicular lymphoid hyperplasia. Special histopathologic staining techniques (Gomori methenamine silver and acid fast stains) and immunohistochemistry (for CD3, BLA36 and lysozyme) failed to reveal any etiologic agents and indicated an inflammatory lesion composed of a heterogeneous population of lymphocytes and macrophages (nodular lymphocytic conjunctivitis). The lesions were indistinguishable, clinically and behaviorally, from what has been reported as 'conjunctival pseudotumor' in the horse. Equine conjunctival pseudotumor/nodular lymphocytic conjunctivitis has been reported to be unilateral and have a good prognosis after partial or complete surgical excision. This is the first reported case of bilateral nodular lymphocytic conjunctivitis in a horse and for which surgical excision alone was not curative.
Collapse
|
11
|
Michishita M, Nakamura SI, Sakakibara I, Ono F, Fujimoto K, Kamiya K, Ishii Y, Hayashi K, Yoshikawa Y, Takahashi K. Spontaneous T-cell-rich B-cell lymphoma in a cynomolgus monkey (Macaca fascicularis). Exp Anim 2003; 52:339-44. [PMID: 14562611 DOI: 10.1538/expanim.52.339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
A spontaneous T-cell-rich B-cell lymphoma (TCRBCL) occurred as a subcutaneous mass in the buccal region and enlarged submandibular lymph node in a 6-year-old female cynomolgus monkey (Macaca fascicularis). The constituent cells were examined by histology, immunohistochemistry and the double labeled-immunofluorescence method (dl-IF). Further, in situ hybridization (ISH) was employed to detect the gene expression of Epstein Barr virus (EBV). Histologically, the mass was comprised mainly of neoplastic large lymphoid cells and reactive small mononuclear cells. Immunohistochemically, the neoplastic large lymphoid cells were positive for CD20, CD79 alpha, MHC class II, and either IgG, IgM, or IgA. Polyclonal Ig production by the neoplastic large lymphoid cells was demonstrated by dl-IF, although IgG-positive ones predominated in number. On the other hand, most of the small mononuclear cells were positive for CD3 and were regarded as reactive T lymphocytes, while the remaining cells appeared to be histocytes or reactive B-cells. Transcripts of EBV gene were not demonstrated in these neoplastic or reactive cells by ISH. This is the first reported case of spontaneous TCRBCL in the cynomolgus monkey.
Collapse
Affiliation(s)
- Masaki Michishita
- Department of Veterinary Pathology, Nippon Veterinary Animal and Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Abstract
We identified 20 cases of feline lymphadenopathy that conform to many clinical and histologic manifestations of human Hodgkin's disease. Histologic subtypes encountered included lymphocyte predominance (nine cases), mixed cellularity (nine cases), and nodular sclerosis (two cases). Two cases were not easily classified; fibrous bands were present, but the absence of nodules supported a subclassification of mixed cellularity Hodgkin's disease. Immunohistochemical staining of the tissues using antibodies against the pan T-cell antigen CD3, the human B-lymphocyte antigen 36 (BLA.36), the pan B-lymphocyte and plasma cell marker CD79a, and a myeloid antigen (MAC387) confirmed the phenotypic heterogeneity of the tumor. Classic Reed-Sternberg (RS) cells and mononuclear, multinucleate, and lacunar cell variants did not stain with any of the antibodies used. In contrast, lymphohistiocytic RS variants (L+H cells) reacted positively to BLA.36 and CD79a B-cell markers. Eighteen of 20 affected cats were > or = 6 years of age (range, 1-14 years). A sex predilection could not be identified. These findings support the existence of Hodgkin's-like lymphoma in the cat. Proper identification of this disease in the cat will enable further characterization of clinical features and biologic behavior to determine whether there are significant differences in the treatment and prognosis of feline Hodgkin's-like lymphoma compared with non-Hodgkin's lymphoma.
Collapse
Affiliation(s)
- R M Walton
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia 19104, USA
| | | |
Collapse
|
13
|
Aquino SM, Hamor RE, Valli VE, Kitchell BE, Tunev SS, Bailey KL, Ehrhart EJ. Progression of an orbital T-cell rich B-cell lymphoma to a B-cell lymphoma in a dog. Vet Pathol 2000; 37:465-9. [PMID: 11055871 DOI: 10.1354/vp.37-5-465] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
An 11-year-old Shetland Sheepdog was presented for exophthalmos caused by a locally extensive, poorly defined mass located behind the right eye. The primary orbital mass was identified by light microscopy and immunohistochemistry as a T-cell rich B-cell lymphoma (TCRBCL) composed predominantly of BLA.36-positive large neoplastic lymphoid cells admixed with fewer CD3- and CD79a-positive small lymphocytes. The dog was treated for lymphoma, but 6 months after presentation it was euthanatized for suspected hepatic and gastrointestinal metastasis. Gross findings revealed an enlarged liver with multiple well-demarcated, randomly distributed 0.1-1.5-cm white nodules, five firm white submucosal jejunal nodules, and ileocecal, mediastinal, and hilar lymphadenopathy. Metastatic liver lesions consisted of sheets of monomorphic large neoplastic lymphoid cells that effaced and expanded portal and centrilobular zones. These cells were morphologically similar to the large neoplastic cells of the original orbital tumor and were CD3-negative and variably BLA.36-positive, consistent with B-cell lineage. Similar cells comprised the jejunal nodules and effaced the lymph nodes. The progression of TCRBCL to a diffuse B-cell lymphoma in this case is consistent with reported human cases and has not been previously reported in the dog.
Collapse
|
14
|
Gabor LJ, Canfield PJ, Malik R. Immunophenotypic and histological characterisation of 109 cases of feline lymphosarcoma. Aust Vet J 1999; 77:436-41. [PMID: 10451727 DOI: 10.1111/j.1751-0813.1999.tb12085.x] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To determine and analyse the immunophenotype and histological appearance of naturally occurring cases of lymphosarcoma in Australian cats. DESIGN A prospective multi-institutional study of naturally occurring feline lymphosarcoma. METHODS One hundred and eighteen cats were referred for diagnosis and/or management of suspected lymphosarcoma. Tissue samples for histopathological analysis and immunophenotyping were collected as biopsies or at necropsy from 109 cases. Histological classification of the neoplasms followed the Working Formulation Classification System. Four multi-species cross-reactive antibodies were used to classify tumours as having a B or T cell phenotype. RESULTS Seventy-six (70%) cases were B cell tumours and 28 (26%) were T cell tumours. The remaining 5 (4%) specimens failed to stain with the four antibodies. Histologically, 11 (10%) cases were classified as low-grade, 72 (66%) were medium-grade and 26 (24%) were high-grade tumours. There were no significant associations between age and either histological grade or immunophenotype. Mediastinal and leukaemic cases were significantly more likely to be T cell tumours (P < 0.001 and P < 0.001, respectively). CONCLUSIONS In contrast to previously documented studies in the cat, the majority of cases of lymphosarcoma were of B cell phenotype and intermediate histological grade. Based on our data, the histological phenotype of lymphosarcoma is unlikely to predict immunotype, nor are cases of certain immunotypes likely to be of specific histological subtype. Considered in relation to previous reports, the findings suggest that epidemiological factors operating in these cats to produce lymphosarcoma may be different to those operating in North American and UK cat populations.
Collapse
Affiliation(s)
- L J Gabor
- Department of Veterinary Clinical Sciences, Faculty of Veterinary Science, University of Sydney, New South Wales
| | | | | |
Collapse
|
15
|
Day MJ, Kyaw-Tanner M, Silkstone MA, Lucke VM, Robinson WF. T-cell-rich B-cell lymphoma in the cat. J Comp Pathol 1999; 120:155-67. [PMID: 10087489 DOI: 10.1053/jcpa.1998.0267] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The clinical and pathological features of eight cases of feline T-cell-rich B-cell lymphoma are described. The disease occurred in older cats (mean age 11.4 +/- 3.9 years), which on initial examination generally showed enlargement of a single submandibular or cervical lymph node. After excision, there was no recurrence of the lesions at 6 months in three cats. In one further case, however, the lesion had recurred 6 months later; it was again excised but recurred after an additional 6 months. Microscopically, there was effacement of normal lymph node architecture by a nodular (n = 4) or diffuse (n = 4) proliferation of small to blastic lymphocytes, accompanied by a characteristic population of bizarre giant, or multinucleate, cells. The mitotic rate was low and mitoses were restricted to the atypical population. Immunophenotyping revealed the smaller lymphocytes to be a mixture of CD3+ MHC Class II+ T lymphocytes and BLA36+CD79variable MHC Class IIvariable B lymphocytes. The atypical cells were of the B-cell lineage (BLA36+MHC Class IIvariable). Polymerase chain reaction analysis revealed no proviral DNA products of feline leukaemia virus or feline immunodeficiency virus in tissue from any tumour, confirming that these neoplasms were not associated with either virus. The clinical, histological and immunophenotypic findings in these cats were identical with those of "nodular lymphocyte predominance (lymphocytic and histiocytic/L&H) Hodgkin's disease" in man.
Collapse
Affiliation(s)
- M J Day
- Department of Pathology and Microbiology, University of Bristol, Langford, United Kingdom
| | | | | | | | | |
Collapse
|
16
|
Abstract
A 5-year-old intact male Persian cat was presented with progressive neurologic deficits, hyperesthesia, hyperreflexia, ataxia, and intention tremors, which resulted in death. Serologic tests for feline leukemia virus and feline immunodeficiency virus infection were negative. Neurohistologic examination revealed the presence of pleomorphic cellular infiltrates in cerebral leptomeninges and around parenchymal vessels. The majority of infiltrating cells were uniformly immunostained using an antiserum directed against T cells. Immunohistochemical examination of paraffin-embedded brain sections for the antigens of canine distemper virus, herpesvirus, Borna virus, and Toxoplasma gondii were negative. Histologic and immunohistochemical studies revealed a primary central nervous system T-cell lymphoma affecting the brain.
Collapse
Affiliation(s)
- D Fondevila
- Department of Pathology and Animal Science, School of Veterinary Medicine, Universitat Autònoma de Barcelona, Spain
| | | | | |
Collapse
|
17
|
Abstract
A case of multicentric lymphoma with a mixed cell population of large to small round cells with the same nuclear features in a pig was studied immunohistochemically. Neoplastic tissues were composed of 20-50% B-cell lymphoma cells with lambda-type light chain restriction, and 50-80% cluster of differentiation (CD)3+ T-cells. These findings were similar to those of human T-cell-rich B-cell lymphoma (TCRBCL). In addition, both immunoglobulin IgM and IgG were detected in the cytoplasm of the identical lymphoma cell. This pattern of heavy chain expression appeared to be due to maturational arrest in cellular development at the point of heavy chain class switching, as occurs in biclonal gammopathy in human lymphoid malignancy. This case as TCRBCL containing two types of heavy chains with light chain restriction (IgM-lambda and IgG-lambda) appears to be the first of its kind reported in the English literature for either pigs or domestic animals.
Collapse
|