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Bertram CA, Donovan TA, Bartel A. Mitotic activity: A systematic literature review of the assessment methodology and prognostic value in canine tumors. Vet Pathol 2024:3009858241239565. [PMID: 38533804 DOI: 10.1177/03009858241239565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
One of the most relevant prognostic indices for tumors is cellular proliferation, which is most commonly measured by the mitotic activity in routine tumor sections. The goal of this systematic review was to analyze the methods and prognostic relevance of histologically measuring mitotic activity that have been reported for canine tumors in the literature. A total of 137 articles that correlated the mitotic activity in canine tumors with patient outcome were identified through a systematic (PubMed and Scopus) and nonsystematic (Google Scholar) literature search and eligibility screening process. Mitotic activity methods encompassed the mitotic count (MC, number of mitotic figures per tumor area) in 126 studies, presumably the MC (method not specified) in 6 studies, and the mitotic index (MI, number of mitotic figures per number of tumor cells) in 5 studies. A particularly high risk of bias was identified based on the available details of the MC methods and statistical analyses, which often did not quantify the prognostic discriminative ability of the MC and only reported P values. A significant association of the MC with survival was found in 72 of 109 (66%) studies. However, survival was evaluated by at least 3 studies in only 7 tumor types/groups, of which a prognostic relevance is apparent for mast cell tumors of the skin, cutaneous melanoma, and soft tissue tumor of the skin and subcutis. None of the studies using the MI found a prognostic relevance. This review highlights the need for more studies with standardized methods and appropriate analysis of the discriminative ability to prove the prognostic value of the MC and MI in various tumor types. Future studies are needed to evaluate the influence of the performance of individual pathologists on the appropriateness of prognostic thresholds and investigate methods to improve interobserver reproducibility.
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Ferrari R, Marconato L, Boracchi P, Stefanello D, Godizzi F, Murgia D, Schievenin V, Amati M, Faroni E, Roccabianca P. Splenic stromal sarcomas in dogs: Outcome and clinicopathological prognostic factors in 32 cases. Vet Comp Oncol 2024; 22:12-21. [PMID: 37918913 DOI: 10.1111/vco.12941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 10/06/2023] [Accepted: 10/19/2023] [Indexed: 11/04/2023]
Abstract
Due to the low frequency and the changes in diagnostic techniques and terminology during the last few years, only little clinical information is available on splenic stromal sarcoma (SSS). This multi-institutional study aimed at gathering clinical cases of SSS in dogs and investigates their clinical behaviour, as well as analyse possible clinicopathological prognostic factors, including the use of adjuvant therapy. Dogs with a histologically confirmed SSS that underwent splenectomy were retrospectively included. To be included in the study, either FFPE tissue blocks or multiple tissue sections had to be available for histopathologic and immunohistochemical revision. Clinical and pathological variables, along with adjuvant therapy data, were collected. Cumulative incidence of metastatic disease was analysed through univariate and bivariate analyses. The impact of adjuvant chemotherapy on metastasis incidence and survival was assessed, considering an estimated propensity score. A total of 32 dogs were included. Among them, 22 developed metastases with an incidence of 37.5%, 59.38%, and 65.94% at 6, 12, and 24 months, respectively. Univariate analysis identified mitotic count, total scoring, and necrosis as prognostic factors. In bivariate analysis, mitotic count remained prognostic. The administration of adjuvant chemotherapy did not have an impact on metastasis incidence or survival time. The study found that dogs with SSSs are at high risk of metastasis, although a small subgroup may experience longer survival after splenectomy. Mitotic count was the only variable having a reliable prognostic impact. Adjuvant chemotherapy did not appear to decrease the incidence of metastasis or prolong survival in these dogs.
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Affiliation(s)
- Roberta Ferrari
- Dipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di Milano, Lodi, Italy
| | - Laura Marconato
- Dipartimento di Scienze Mediche Veterinarie, Alma Mater Studiorum, Università di Bologna, Ozzano dell'Emilia, Italy
| | - Patrizia Boracchi
- Dipartimento di Scienze Cliniche e di Comunità, Laboratorio di Statistica Medica, Biometria ed Epidemiologia "G.A. Maccacaro", Università degli Studi di Milano, Milan, Italy
| | - Damiano Stefanello
- Dipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di Milano, Lodi, Italy
| | - Francesco Godizzi
- Dipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di Milano, Lodi, Italy
| | | | | | - Maria Amati
- Dipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di Milano, Lodi, Italy
| | - Eugenio Faroni
- Dipartimento di Scienze Mediche Veterinarie, Alma Mater Studiorum, Università di Bologna, Ozzano dell'Emilia, Italy
| | - Paola Roccabianca
- Dipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di Milano, Lodi, Italy
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Sabattini S, Rigillo A, Foiani G, Marconato L, Vascellari M, Greco A, Agnoli C, Annoni M, Melchiotti E, Campigli M, Benali SL, Bettini G. Clinicopathologic features and biologic behavior of canine splenic nodules with stromal, histiocytic and lymphoid components. Front Vet Sci 2022; 9:962685. [PMID: 36032303 PMCID: PMC9411940 DOI: 10.3389/fvets.2022.962685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 07/22/2022] [Indexed: 11/16/2022] Open
Abstract
The term fibrohistiocytic nodule has been discouraged in favor of specific pathologic entities, including complex nodular hyperplasia, splenic stromal sarcoma and histiocytic sarcoma. Nevertheless, the diagnosis of splenic lesions with mixed stromal, histiocytic and lymphoid components still remains a challenge due to lack of straightforward histologic criteria. Misestimation of the biologic behavior of these lesions may lead to detrimental consequences on the clinical management of patients. In this study, we retrospectively evaluated the clinicopathologic features and outcome of canine splenic nodular lesions with mixed components, to identify prognostic factors and histologic criteria of malignancy. Thirty-seven cases were included. Immunohistochemistry did not allow for further subclassification. Nine (24.3%) dogs died from disease-related causes after a median of 234 days (range, 48–1,247). One-, 2- and 3-year disease-specific survival rates were 80, 60, and 43%, respectively. When considering nodules with stromal cell atypia and at least one of mitotic count ≥9, presence of karyomegaly/multinucleated cells and lymphoid component <40%, half of these dogs died of disease-related causes with a median disease-specific survival time of 548 days (95% CI, 0-1216). In the remaining dogs, no disease-related death was reported (P < 0.001). Canine splenic nodular lesions with mixed stromal, histiocytic and lymphoid components and histologic criteria of malignancy may behave aggressively, leading to distant metastasis and death. In the absence of further criteria aiding their classification, and to better characterize their biologic behavior, we encourage the distinction of these complex splenic tumors from conventional sarcomas and histiocytic sarcomas.
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Affiliation(s)
- Silvia Sabattini
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia, Bologna, Italy
- *Correspondence: Silvia Sabattini
| | - Antonella Rigillo
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia, Bologna, Italy
| | - Greta Foiani
- Istituto Zooprofilattico Sperimentale delle Venezie, Padua, Italy
| | - Laura Marconato
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia, Bologna, Italy
| | - Marta Vascellari
- Istituto Zooprofilattico Sperimentale delle Venezie, Padua, Italy
| | - Alessandra Greco
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia, Bologna, Italy
| | - Chiara Agnoli
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia, Bologna, Italy
| | | | - Erica Melchiotti
- Istituto Zooprofilattico Sperimentale delle Venezie, Padua, Italy
| | - Michela Campigli
- Oncology Division, San Marco Veterinary Clinic and Laboratory, Padua, Italy
| | | | - Giuliano Bettini
- Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Ozzano dell'Emilia, Bologna, Italy
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Swieton N, Degroot W, Ringwood B, Lemon M. What Is Your Diagnosis? J Am Vet Med Assoc 2022; 260:1-3. [PMID: 35460548 DOI: 10.2460/javma.20.12.0704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Natalie Swieton
- 1Veterinary Emergency Clinic and Referral Centre, Toronto, ON, Canada.,2Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - Whitney Degroot
- 1Veterinary Emergency Clinic and Referral Centre, Toronto, ON, Canada
| | - Brendon Ringwood
- 1Veterinary Emergency Clinic and Referral Centre, Toronto, ON, Canada
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Spröhnle-Barrera CH, McGhie J, Allavena RE, Owen HC, Palmieri C, Barnes TS. Epidemiology and Survival of Dogs Diagnosed with Splenic Lymphoid Hyperplasia, Complex Hyperplasia, Stromal Sarcoma and Histiocytic Sarcoma. Animals (Basel) 2022; 12:ani12080960. [PMID: 35454207 PMCID: PMC9028997 DOI: 10.3390/ani12080960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/05/2022] [Accepted: 04/07/2022] [Indexed: 12/12/2022] Open
Abstract
Canine splenic fibrohistiocytic nodules traditionally encompassed benign lymphoid hyperplasia, complex hyperplasia, and malignant fibrous histiocytoma. The latter has been recently re-classified into histiocytic sarcoma and stromal sarcoma. Reliable indicators of post-splenectomy survival and demographic factors predisposing to the four types of nodules are not completely understood. This study aims to estimate frequency, survival times, and identify risk factors of splenectomized dogs diagnosed with lymphoid hyperplasia, complex hyperplasia, histiocytic sarcoma, and stromal sarcoma using medical records containing histopathological diagnosis from the VetCompass Australia database (1989−2018), which collects demographic, and clinical information from veterinary clinics. Out of 693 dogs, 315 were diagnosed with fibrohistiocytic nodules, mostly lymphoid hyperplasia (169/693, 24.4%), followed by stromal sarcoma (59/693, 8.5%), complex hyperplasia (55/693, 7.9%), and histiocytic sarcoma (32/693, 4.6%). Dogs aged 8−10 years were more likely to be diagnosed with histiocytic or stromal sarcoma than lymphoid hyperplasia. Dogs diagnosed with lymphoid hyperplasia had a longer survival time than those with other diagnoses (median > 2 years). Dogs diagnosed with histiocytic sarcoma had longer survival times (median 349 days) than stromal sarcoma (median 166 days). Results suggest that knowledge of the type of splenic fibrohistiocytic nodule, patients’ age, and sex can be used to increase prognostic accuracy.
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Wittenberns BM, Thamm DH, Palmer EP, Regan DP. Canine Non-Angiogenic, Non-Myogenic Splenic Stromal Sarcoma: a Retrospective Clinicopathological Analysis and Investigation of Podoplanin as a Marker of Tumour Histogenesis. J Comp Pathol 2021; 188:1-12. [PMID: 34686271 DOI: 10.1016/j.jcpa.2021.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/30/2021] [Accepted: 07/30/2021] [Indexed: 10/20/2022]
Abstract
Splenic stromal sarcomas are rarely reported tumours that were previously grouped as non-angiomatous, non-lymphomatous mesenchymal neoplasms of the canine spleen. Highly variable survival times have been reported probably due to their heterogeneous nature. The purpose of this study was to assess the outcome and prognostic factors in dogs with splenic stromal sarcoma after treatment by splenectomy. Clinical data were collected retrospectively and histopathology was reviewed for 47 patients. Histological classification, based on morphology in haematoxylin and eosin-stained sections, in conjunction with immunolabelling of macrophage scavenger receptor-A (CD204), desmin, factor VIII-related antigen and smooth muscle actin ,yielded diagnoses of undifferentiated stromal sarcoma (n = 22), complex nodular hyperplasia (CNH, n = 9), sarcoma arising from benign complex nodular hyperplasia (n = 3), histiocytic sarcoma (n = 3), haemangiosarcoma (n = 1) and leiomyosarcoma (n = 1). Four samples were excluded from analysis due to extensive necrosis. An anti-podoplanin (PDPN) antibody was validated on canine tissue and used to assess expression of this protein as a potential indicator of the tissue of origin of the neoplasms (28/42 tumours were positive). There was a statistically significant difference in survival time between patients with stromal sarcoma (sarcoma from benign CNH and undifferentiated stromal sarcoma) and CNH (178 d versus 637 d, respectively; P = 0.027). Dogs with stromal sarcomas and high mitotic count (≥9 per 10 high-power fields) had a significantly shorter survival time (67 d versus 439 d; P = 0.01). Clinical diagnosis of splenic tumours should include evaluation for the presence of benign nodular hyperplasia morphology and immunohistochemistry to exclude more aggressive malignancies where adjuvant therapy is recommended. As in humans, PDPN may be an effective marker for stromal sarcomas of the canine spleen and immunopositivity suggests a fibroblastic reticular or follicular dendritic cell origin.
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Affiliation(s)
- Brittany M Wittenberns
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado, USA; Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Douglas H Thamm
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado, USA; Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Eric P Palmer
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, Colorado, USA; Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Daniel P Regan
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, Colorado, USA; Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA.
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Burgess KE, Price LL, King R, Kwong M, Grant E, Olson KA, Lyons JA, Robinson NA, Wendelburg KM, Berg J. Development and validation of a multivariable model and online decision-support calculator to aid in preoperative discrimination of benign from malignant splenic masses in dogs. J Am Vet Med Assoc 2021; 258:1362-1371. [PMID: 34061606 DOI: 10.2460/javma.258.12.1362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To develop a multivariable model and online decision-support calculator to aid in preoperative discrimination of benign from malignant splenic masses in dogs. ANIMALS 522 dogs that underwent splenectomy because of splenic masses. PROCEDURES A multivariable model was developed with preoperative clinical data obtained retrospectively from the records of 422 dogs that underwent splenectomy. Inclusion criteria were the availability of complete abdominal ultrasonographic examination images and splenic histologic slides or histology reports for review. Variables considered potentially predictive of splenic malignancy were analyzed. A receiver operating characteristic curve was created for the final multivariable model, and area under the curve was calculated. The model was externally validated with data from 100 dogs that underwent splenectomy subsequent to model development and was used to create an online calculator to estimate probability of splenic malignancy in individual dogs. RESULTS The final multivariable model contained 8 clinical variables used to estimate splenic malignancy probability: serum total protein concentration, presence (vs absence) of ≥ 2 nRBCs/100 WBCs, ultrasonographically assessed splenic mass diameter, number of liver nodules (0, 1, or ≥ 2), presence (vs absence) of multiple splenic masses or nodules, moderate to marked splenic mass inhomogeneity, moderate to marked abdominal effusion, and mesenteric, omental, or peritoneal nodules. Areas under the receiver operating characteristic curves for the development and validation populations were 0.80 and 0.78, respectively. CONCLUSIONS AND CLINICAL RELEVANCE The online calculator (T-STAT.net or T-STAT.org) developed in this study can be used as an aid to estimate the probability of malignancy in dogs with splenic masses and has potential to facilitate owners' decisions regarding splenectomy.
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Avallone G, Rasotto R, Chambers JK, Miller AD, Behling-Kelly E, Monti P, Berlato D, Valenti P, Roccabianca P. Review of Histological Grading Systems in Veterinary Medicine. Vet Pathol 2021; 58:809-828. [PMID: 33769136 DOI: 10.1177/0300985821999831] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Tumor grading is a method to quantify the putative clinical aggressiveness of a neoplasm based on specific histological features. A good grading system should be simple, easy to use, reproducible, and accurately segregate tumors into those with low versus high risk. The aim of this review is to summarize the histological and, when available, cytological grading systems applied in veterinary pathology, providing information regarding their prognostic impact, reproducibility, usefulness, and shortcomings. Most of the grading schemes used in veterinary medicine are developed for common tumor entities. Grading systems exist for soft tissue sarcoma, osteosarcoma, multilobular tumor of bone, mast cell tumor, lymphoma, mammary carcinoma, pulmonary carcinoma, urothelial carcinoma, renal cell carcinoma, prostatic carcinoma, and central nervous system tumors. The prognostic relevance of many grading schemes has been demonstrated, but for some tumor types the usefulness of grading remains controversial. Furthermore, validation studies are available only for a minority of the grading systems. Contrasting data on the prognostic power of some grading systems, lack of detailed instructions in the materials and methods in some studies, and lack of data on reproducibility and validation studies are discussed for the relevant grading systems. Awareness of the limitations of grading is necessary for pathologists and oncologists to use these systems appropriately and to drive initiatives for their improvement.
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Affiliation(s)
- Giancarlo Avallone
- Department of Veterinary medical Sciences (DIMEVET), 9296University of Bologna, Ozzano dell'Emilia, Italy
| | | | - James K Chambers
- Laboratory of Veterinary Pathology, 13143The University of Tokyo, Tokyo, Japan
| | - Andrew D Miller
- Department of Biomedical Sciences, Section of Anatomic Pathology, 43317Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Erica Behling-Kelly
- Department of Population Medicine and Diagnostic Sciences, Section of Clinical Pathology, 43317Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Paola Monti
- 170851Dick White Referrals, Six Mile Bottom, Cambridgeshire, UK
| | - Davide Berlato
- 170851AniCura Animal Oncology and Imaging Center, Hünenberg, Switzerland
| | - Paola Valenti
- 534741Clinica Veterinaria Malpensa, Samarate (VA), Italy
| | - Paola Roccabianca
- Department of Veterinary Medicine (DIMEVET), 9304University of Milano, Lodi (LO), Italy
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Cruzado Perez J, Beck S, Di Bella A, Kelly D. Haemophagocytic histiocytic sarcoma with presumed involvement of the skeletal musculature in a greyhound. VETERINARY RECORD CASE REPORTS 2021. [DOI: 10.1002/vrc2.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Judith Cruzado Perez
- Department of Internal Medicine Southern Counties Veterinary Specialists Forest Corner Farm, Unit 6 Ringwood Hampshire BH24 3JW United Kingdom
| | - Samuel Beck
- VPG Histology Synlab Bristol UK
- Royal Veterinary College, University of London Hawkshead Ln, Brookmans Park Hatfield London AL9 7TA United Kingdom
| | - Andrea Di Bella
- Department of Internal Medicine Southern Counties Veterinary Specialists Forest Corner Farm, Unit 6 Ringwood Hampshire BH24 3JW United Kingdom
| | - Darren Kelly
- Department of Internal Medicine Southern Counties Veterinary Specialists Forest Corner Farm, Unit 6 Ringwood Hampshire BH24 3JW United Kingdom
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10
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Tecilla M, Gambini M, Forlani A, Caniatti M, Ghisleni G, Roccabianca P. Evaluation of cytological diagnostic accuracy for canine splenic neoplasms: An investigation in 78 cases using STARD guidelines. PLoS One 2019; 14:e0224945. [PMID: 31697755 PMCID: PMC6837434 DOI: 10.1371/journal.pone.0224945] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 10/24/2019] [Indexed: 11/19/2022] Open
Abstract
Cytology represents a useful diagnostic tool in the preliminary clinical approach to canine splenic lesions, and may prevent unnecessary splenectomy. However, few studies have evaluated diagnostic accuracy of cytology in the diagnosis of canine splenic neoplasms. The aim of this study was to determine overall accuracy, sensitivity, specificity, positive and negative predictive values (i.e. diagnostic accuracy indexes) of cytology for canine splenic neoplasms following Standards for the Reporting of Diagnostic Accuracy Studies (STARD) guidelines. A consecutive series of canine splenic cytological samples was retrospectively retrieved from the database of the Diagnostic Pathology Service of the Department of Veterinary Medicine (DIMEVET—University of Milan). Histopathology was set as the diagnostic reference standard. Cytological cases were enrolled when slides were available for review and when the same lesion was submitted for histopathology. Seventy-eight (78) lesions were included in the study. By histopathology, 56 were neoplastic and 22 were non-neoplastic. Cytology had an overall accuracy of 73.08% (95% C.I. 61.84%-82.50%), sensitivity of 64.29% (95% C.I. 50.36%-76.64%), specificity of 95.45% (95% C.I. 77.16%-99.88%), and positive and negative predictive values of 97.3% (95% C.I. 84.01%-99.60%) and 51.22% (95% C.I. 42.21%-60.15%), respectively. Low sensitivity and negative predictive value were balanced by very high specificity and positive predictive value. When positive for neoplasia, cytology represents a useful diagnostic tool to rule in splenic neoplasia, prompting surgery independently from other diagnostic tests. Conversely, a negative cytological result requires additional investigations to confirm the dog to be disease free.
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Affiliation(s)
- Marco Tecilla
- Diagnostic Pathology Service, Dipartimento di Medicina Veterinaria (DIMEVET), Università degli Studi di Milano, Lodi, Italy
| | - Matteo Gambini
- Diagnostic Pathology Service, Dipartimento di Medicina Veterinaria (DIMEVET), Università degli Studi di Milano, Lodi, Italy
- * E-mail:
| | - Annalisa Forlani
- Diagnostic Pathology Service, Dipartimento di Medicina Veterinaria (DIMEVET), Università degli Studi di Milano, Lodi, Italy
| | - Mario Caniatti
- Diagnostic Pathology Service, Dipartimento di Medicina Veterinaria (DIMEVET), Università degli Studi di Milano, Lodi, Italy
| | - Gabriele Ghisleni
- Diagnostic Pathology Service, Dipartimento di Medicina Veterinaria (DIMEVET), Università degli Studi di Milano, Lodi, Italy
| | - Paola Roccabianca
- Diagnostic Pathology Service, Dipartimento di Medicina Veterinaria (DIMEVET), Università degli Studi di Milano, Lodi, Italy
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11
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Fernandez S, Lang JM, Maritato KC. Evaluation of Nodular Splenic Lesions in 370 Small-Breed Dogs (<15 kg). J Am Anim Hosp Assoc 2019; 55:201-209. [PMID: 31099604 DOI: 10.5326/jaaha-ms-6934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Three hundred seventy small-breed dogs (<15 kg) undergoing splenectomy for the presence of nodular splenic lesions were evaluated in a retrospective study to assess associations with breeds, malignancy, hemoperitoneum, and median survival time compared with previous studies. Data analyzed included signalment, histopathologic diagnosis, presence or absence of hemoperitoneum, breed associations, and survival times. In the current study, 44% (163/370) of dogs had nonneoplastic splenic lesions and 56% (207/370) had neoplastic lesions. Hemangiosarcoma was present in 27% (100/370) of splenic lesions. Hemoperitoneum was present in 31% (115/370) of dogs, and of this population, 66% (76/115) had malignant splenic lesions. The most common breeds were miniature schnauzers, dachshunds, and beagles, with beagles exhibiting a positive association with malignancy. The presence of hemoperitoneum was associated with malignancy. Distribution for nodular splenic lesions, correlation of hemoperitoneum to malignancy, and median survival time were similar to previous reports in large-breed dogs. Small-breed dogs who present with hemoperitoneum are 2.6 times more likely to have a diagnosis of a malignant splenic lesion. The most common small-breed dogs with nodular splenic lesions were miniature schnauzers, dachshunds, and beagles. Beagles and small-breed terriers were more likely to have malignant splenic lesions, and small-breed terriers were more likely to present with hemoperitoneum.
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Affiliation(s)
- Steven Fernandez
- From MedVet Medical and Cancer Centers for Pets-New Orleans, Metairie, Louisiana (S.F., J.M.L.); and MedVet Medical and Cancer Centers for Pets-Cincinnati, Cincinnati, Ohio (K.C.M)
| | - Jennifer M Lang
- From MedVet Medical and Cancer Centers for Pets-New Orleans, Metairie, Louisiana (S.F., J.M.L.); and MedVet Medical and Cancer Centers for Pets-Cincinnati, Cincinnati, Ohio (K.C.M)
| | - Karl C Maritato
- From MedVet Medical and Cancer Centers for Pets-New Orleans, Metairie, Louisiana (S.F., J.M.L.); and MedVet Medical and Cancer Centers for Pets-Cincinnati, Cincinnati, Ohio (K.C.M)
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12
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Erich SA, Constantino-Casas F, Dobson JM, Teske E. Morphological Distinction of Histiocytic Sarcoma from Other Tumor Types in Bernese Mountain Dogs and Flatcoated Retrievers. ACTA ACUST UNITED AC 2018; 32:7-17. [PMID: 29275293 DOI: 10.21873/invivo.11198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 10/10/2017] [Accepted: 10/13/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIM Histiocytic sarcoma (HS) represents a group of malignant canine tumors to which Bernese Mountain Dogs (BMD) and Flatcoated Retrievers (FCR) are predisposed. The differential diagnosis for HS is broad, encompassing round cell tumors, sarcomas and other histiocytic diseases. The aim of this study was to establish morphological and immunohistochemical criteria for routine use on formalin-fixed, paraffin-embedded samples and cytological smears for the recognition and differentiation of canine HS and its subtypes. MATERIALS AND METHODS Retrospectively, tumor sections were reviewed from 449 BMD and 380 FCR with confirmed or suspected HS, other histiocytic conditions, or a disease of the differential diagnosis of HS. RESULTS In a large proportion of cases, 47.5% for histology and for 46.3% cytology, the initial diagnosis was changed after the revision process. A large variation in morphological features of HS was observed in this study, making the existence of several subtypes in dogs also very likely. Furthermore, the different percentage of morphological features between BMD and FCR indicates the different mixture of cell type origins resulting possibly from genetic or environmental differences at the onset of HS in those breeds. CONCLUSION This study stresses the value of a strictly applied and standardized scoring system for microscopic evaluation of tumor sections and smears, and the implementation of review and revision of pathological diagnoses.
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Affiliation(s)
- Suzanne A Erich
- Department of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | | | - Jane M Dobson
- Department of Veterinary Medicine, University of Cambridge, Cambridge, U.K
| | - Erik Teske
- Department of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
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13
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Sabattini S, Lopparelli RM, Rigillo A, Giantin M, Renzi A, Matteo C, Capitani O, Dacasto M, Mengoli M, Bettini G. Canine Splenic Nodular Lymphoid Lesions: Immunophenotyping, Proliferative Activity, and Clonality Assessment. Vet Pathol 2018; 55:645-653. [PMID: 29807508 DOI: 10.1177/0300985818777035] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Canine splenic lymphoid nodules are currently classified as indolent lymphomas (marginal zone lymphoma [MZL], mantle cell lymphoma [MCL]) or nodular hyperplasia (lymphoid [LNH] or complex [CNH] type). Their differentiation can be difficult on morphology, because of similar histologic appearance and poorly defined diagnostic criteria. Thirty-five surgical samples of splenic lymphoid nodules were reviewed in order to assess the diagnostic contribution of immunophenotyping, proliferative activity and clonality (PARR) in differentiating between hyperplastic and neoplastic lesions. Proliferative activity was evaluated by double immunolabeling for Ki-67 and CD79a, in order to separately assess the proliferative activity of B cells and non-B cells. Definitive diagnoses were MZL ( n = 11), MCL ( n = 4), LNH ( n = 10), and CNH ( n = 10). The overall concordance between histology and PARR was above 90%. Lymphomas had a significantly higher percentage of CD79a-positive areas (mean, 36.30%; P = .0004) and a higher B-cell proliferative activity (median Ki-67 index, 5.49%; P = .0012). The threshold value most accurately predicting a diagnosis of lymphoma was ≥28% of B-cell areas, with a Ki-67 index above 3%. Dogs were monitored for a median follow-up time of 870 days (IQR, 569-1225), and no relapses were documented. Overall median survival time was 1282 days. The combination of histology, immunohistochemistry and PARR can improve the diagnostic accuracy for canine splenic lymphoid nodules, although the long-term behavior of these lesions appears similar.
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Affiliation(s)
- Silvia Sabattini
- 1 Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Italy
| | - Rosa Maria Lopparelli
- 2 Department of Comparative Biomedicine and Food Science, University of Padua, Italy
| | - Antonella Rigillo
- 1 Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Italy
| | - Mery Giantin
- 2 Department of Comparative Biomedicine and Food Science, University of Padua, Italy
| | - Andrea Renzi
- 1 Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Italy
| | - Chiara Matteo
- 1 Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Italy
| | - Ombretta Capitani
- 1 Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Italy
| | - Mauro Dacasto
- 2 Department of Comparative Biomedicine and Food Science, University of Padua, Italy
| | - Marisa Mengoli
- 1 Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Italy
| | - Giuliano Bettini
- 1 Department of Veterinary Medical Sciences, Alma Mater Studiorum University of Bologna, Italy
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Corbin EE, Cavanaugh RP, Schwartz P, Zawadzki KI, Donovan T. Splenomegaly in small‐breed dogs: 45 cases(2005–2011). J Am Vet Med Assoc 2017; 250:1148-1154. [DOI: 10.2460/javma.250.10.1148] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Grimes JA, Prasad N, Levy S, Cattley R, Lindley S, Boothe HW, Henderson RA, Smith BF. A comparison of microRNA expression profiles from splenic hemangiosarcoma, splenic nodular hyperplasia, and normal spleens of dogs. BMC Vet Res 2016; 12:272. [PMID: 27912752 PMCID: PMC5135805 DOI: 10.1186/s12917-016-0903-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 11/22/2016] [Indexed: 12/28/2022] Open
Abstract
Background Splenic masses are common in older dogs; yet diagnosis preceding splenectomy and histopathology remains elusive. MicroRNAs (miRNAs) are short, non-coding RNAs that play a role in post-transcriptional regulation, and differential expression of miRNAs between normal and tumor tissue has been used to diagnose neoplastic diseases. The objective of this study was to determine differential expression of miRNAs by use of RNA-sequencing in canine spleens that were histologically confirmed as hemangiosarcoma, nodular hyperplasia, or normal. Results Twenty-two miRNAs were found to be differentially expressed in hemangiosarcoma samples (4 between hemangiosarcoma and both nodular hyperplasia and normal spleen and 18 between hemangiosarcoma and normal spleen only). In particular, mir-26a, mir-126, mir-139, mir-140, mir-150, mir-203, mir-424, mir-503, mir-505, mir-542, mir-30e, mir-33b, mir-365, mir-758, mir-22, and mir-452 are of interest in the pathogenesis of hemangiosarcoma. Conclusions Findings of this study confirm the hypothesis that miRNA expression profiles are different between canine splenic hemangiosarcoma, nodular hyperplasia, and normal spleens. A large portion of the differentially expressed miRNAs have roles in angiogenesis, with an additional group of miRNAs being dysregulated in vascular disease processes. Two other miRNAs have been implicated in cancer pathways such as PTEN and cell cycle checkpoints. The finding of multiple miRNAs with roles in angiogenesis and vascular disease is important, as hemangiosarcoma is a tumor of endothelial cells, which are driven by angiogenic stimuli. This study shows that miRNA dysregulation is a potential player in the pathogenesis of canine splenic hemangiosarcoma.
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Affiliation(s)
- Janet A Grimes
- Department of Clinical Sciences, Auburn University College of Veterinary Medicine, Auburn University, Auburn, AL, USA. .,Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, 2200 College Station Road, Athens, GA, 30602, USA.
| | - Nripesh Prasad
- Genomics Services Laboratory, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Shawn Levy
- Genomics Services Laboratory, HudsonAlpha Institute for Biotechnology, Huntsville, AL, USA
| | - Russell Cattley
- Department of Pathobiology, Auburn University College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Stephanie Lindley
- Department of Clinical Sciences, Auburn University College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Harry W Boothe
- Department of Clinical Sciences, Auburn University College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Ralph A Henderson
- Department of Clinical Sciences, Auburn University College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Bruce F Smith
- Scott Ritchey Research Center, Auburn University College of Veterinary Medicine, Auburn University, Auburn, AL, USA
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Sherwood JM, Haynes AM, Klocke E, Higginbotham ML, Thomson EM, Weng HY, Towle Millard HA. Occurrence and Clinicopathologic Features of Splenic Neoplasia Based on Body Weight: 325 Dogs (2003–2013). J Am Anim Hosp Assoc 2016; 52:220-6. [PMID: 27259024 DOI: 10.5326/jaaha-ms-6346] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
ABSTRACT
Medical records of 396 dogs undergoing splenectomy for treatment of a splenic mass or nodular disease were reviewed retrospectively. Overall distribution of histopathologic diagnosis and clinicopathologic features were evaluated for 325 dogs that met inclusion criteria. Dogs were dichotomized into two groups based on weight, with the statistically derived cutoff identified as 27.8 kg. Malignancy was diagnosed in 58% of dogs, with no difference between small (55%) and large (61%) dogs (P = .291). Overall, 32% of splenic masses were hemangiosarcoma (HSA), which comprised 25 and 39% of all masses in small and large dogs, respectively. The diagnosis of HSA, non-HSA malignancy, or benign splenic disease was significantly different between the groups (P = .019). Of malignant diagnoses, HSA comprised 46 and 65% of small and large dog splenic neoplasms, respectively (P = .009). In both groups, dogs with HSA were significantly more likely to have preoperative anemia, hemoabdomen, thrombocytopenia, and a blood transfusion, as compared to dogs with non-HSA malignancy or benign lesions. Overall, dogs had similar odds of having a malignant splenic lesion regardless of weight, but dogs ≤27.8 kg were significantly less likely to be diagnosed with HSA.
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Affiliation(s)
- J. Matthew Sherwood
- J. M. Sherwood's present affiliation is the Department of Surgery, VCA Oso Creek Animal Hospital and Emergency Center, Corpus Christi, TX
- From the Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS (J.M.S., A.M.H., E.K., M.L.H.); Department of Veterinary Clinical Sciences (E.M.T., H.A.T.M) and Department of Comparative Pathobiology (H.Y.W.), College of Veterinary Medicine, Purdue University, West Lafayette, IN
| | - April M. Haynes
- From the Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS (J.M.S., A.M.H., E.K., M.L.H.); Department of Veterinary Clinical Sciences (E.M.T., H.A.T.M) and Department of Comparative Pathobiology (H.Y.W.), College of Veterinary Medicine, Purdue University, West Lafayette, IN
| | - Emily Klocke
- From the Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS (J.M.S., A.M.H., E.K., M.L.H.); Department of Veterinary Clinical Sciences (E.M.T., H.A.T.M) and Department of Comparative Pathobiology (H.Y.W.), College of Veterinary Medicine, Purdue University, West Lafayette, IN
| | - Mary Lynn Higginbotham
- From the Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS (J.M.S., A.M.H., E.K., M.L.H.); Department of Veterinary Clinical Sciences (E.M.T., H.A.T.M) and Department of Comparative Pathobiology (H.Y.W.), College of Veterinary Medicine, Purdue University, West Lafayette, IN
| | - Elizabeth M. Thomson
- E. M. Thomson's present affiliation is North Carolina State Veterinary Hospital, Raleigh, NC
- From the Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS (J.M.S., A.M.H., E.K., M.L.H.); Department of Veterinary Clinical Sciences (E.M.T., H.A.T.M) and Department of Comparative Pathobiology (H.Y.W.), College of Veterinary Medicine, Purdue University, West Lafayette, IN
| | - Hsin-Yi Weng
- From the Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS (J.M.S., A.M.H., E.K., M.L.H.); Department of Veterinary Clinical Sciences (E.M.T., H.A.T.M) and Department of Comparative Pathobiology (H.Y.W.), College of Veterinary Medicine, Purdue University, West Lafayette, IN
| | - Heather A. Towle Millard
- From the Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS (J.M.S., A.M.H., E.K., M.L.H.); Department of Veterinary Clinical Sciences (E.M.T., H.A.T.M) and Department of Comparative Pathobiology (H.Y.W.), College of Veterinary Medicine, Purdue University, West Lafayette, IN
- H. A. T. Millard's present affiliation is Blue Pearl Specialty and Emergency Pet Hospital, Overland Park, KS
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Abstract
Histiocytic proliferative disorders are commonly observed in dogs and less often cats. Histiocytic disorders occur in most of the dendritic cell (DC) lineages. Canine cutaneous histiocytoma originates from Langerhans cells (LCs) indicated by expression of CD1a, CD11c/CD18, and E-cadherin. When histiocytomas occur as multiple lesions in skin with optional metastasis to lymph nodes and internal organs, the disease resembles cutaneous Langerhans cell histiocytosis of humans. Langerhans cell disorders do not occur in feline skin. Feline pulmonary LCH has been recognized as a cause of respiratory failure due to diffuse pulmonary infiltration by histiocytes, which express CD18 and E-cadherin and contain Birbeck's granules. In dogs and cats, histiocytic sarcomas (HS) arise from interstitial DCs that occur in most tissues of the body. Histiocytic sarcomas begin as localized lesions, which rapidly disseminate to many organs. Primary sites include spleen, lung, skin, brain (meninges), lymph node, bone marrow, and synovial tissues of limbs. An indolent form of localized HS, progressive histiocytosis, originates in the skin of cats. Hemophagocytic HS originates in splenic red pulp and bone marrow macrophages in dogs and cats. In dogs, histiocytes in hemophagocytic HS express CD11d/CD18, which is a leuko-integrin highly expressed by macrophages in splenic red pulp and bone marrow. Canine reactive histiocytic diseases, systemic histiocytosis (SH) and cutaneous histiocytosis, are complex inflammatory diseases with underlying immune dysregulation. The lesions are dominated by activated interstitial DCs and lymphocytes, which invade vessel walls and extend as vasocentric infiltrates in skin, lymph nodes, and internal organs (SH).
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Affiliation(s)
- P F Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, 4206 VM3A, 1 Shields Ave, University of California, Davis, CA 95616, USA.
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Wendelburg KM, O'Toole TE, McCobb E, Price LL, Lyons JA, Berg J. Risk factors for perioperative death in dogs undergoing splenectomy for splenic masses: 539 cases (2001–2012). J Am Vet Med Assoc 2014; 245:1382-90. [DOI: 10.2460/javma.245.12.1382] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Hodges J. Using cytology to increase small animal practice revenue. Vet Clin North Am Small Anim Pract 2013; 43:1385-408, vii-viii. [PMID: 24144097 DOI: 10.1016/j.cvsm.2013.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Diagnostic cytology is a useful, noninvasive test with practical foundations in high-quality medicine and applications to practice building. Cytology will generate practice revenue whether assessed in-house or sent to a clinical pathologist. Thorough in-house evaluation is adequate in some cases, but expert opinion is important in many cases. Specimen slides should at least be reviewed in-house for assessment of cellularity and potential artifacts before submission to a reference laboratory. Reference laboratories also provide special stains and advanced molecular diagnostics to help further characterize many neoplastic processes, search for organisms, identify pigments, and address other important aspects of the lesion.
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Affiliation(s)
- Joanne Hodges
- VDx Veterinary Diagnostics, 2019 Anderson Road, Suite C, Davis, CA 95616, USA.
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