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Quist EM, Choudhary S, Lang R, Tokarz DA, Hoenerhoff M, Nagel J, Everitt JI. Proceedings of the 2022 National Toxicology Program Satellite Symposium. Toxicol Pathol 2022; 50:836-857. [PMID: 36165586 PMCID: PMC9678128 DOI: 10.1177/01926233221124825] [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] [Indexed: 11/16/2022]
Abstract
The 2022 annual National Toxicology Program Satellite Symposium, entitled "Pathology Potpourri," was held in Austin, Texas at the Society of Toxicologic Pathology's 40th annual meeting during a half-day session on Sunday, June 19. The goal of this symposium was to present and discuss challenging diagnostic pathology and/or nomenclature issues. This article presents summaries of the speakers' talks along with select images that were used by the audience for voting and discussion. Various lesions and topics covered during the symposium included induced and spontaneous neoplastic and nonneoplastic lesions in the mouse lung, spontaneous lesions in the reproductive tract of a female cynomolgus macaque, induced vascular lesions in a mouse asthma model and interesting case studies in a rhesus macaque, dog and genetically engineered mouse model.
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Affiliation(s)
| | | | | | | | - Mark Hoenerhoff
- Unit for Laboratory Animal Medicine In Vivo Animal Core, University of Michigan Medical School, Ann Arbor, MI
| | - Jonathan Nagel
- University of North Carolina – Chapel Hill, Chapel Hill, NC
- North Carolina State University, Raleigh, NC
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Sousa AC, Santos JC, Landolt C, Gomes C, Dias-Pereira P, Baptista CS. Clinicopathological and imaging features of pulmonary alveolar microlithiasis in a dog - a case report. BMC Vet Res 2020; 16:376. [PMID: 33028333 PMCID: PMC7539460 DOI: 10.1186/s12917-020-02593-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 09/28/2020] [Indexed: 11/10/2022] Open
Abstract
Background The aetiology of pulmonary alveolar microlithiasis (PAM) in animals is still unknown. In humans, this pulmonary disorder is a rare autosomal recessive disorder triggered by a mutation in the gene SLC34A2, which causes deposition and aggregation of calcium and phosphate in the pulmonary parenchyma with formation of microliths. Although histopathological examination is required for a definite diagnosis, in humans, imaging modalities such as computed tomography can demonstrate typical patterns of the disease. This is the first description of the computed tomographic (CT) features of a histologically confirmed PAM in dogs. Case presentation The following report describes a case of a 7-year-old female Boxer dog evaluated for paroxysmal loss of muscle tone and consciousness with excitement. The main differential diagnoses considered were syncope, seizures, and narcolepsy-cataplexy. The results of the complete blood count, serum biochemistry panel, urinalysis, arterial blood pressure, echocardiography, abdominal ultrasound, Holter monitoring, and ECG were all within normal limits. Additional exams included thoracic radiographs, head and thorax CT, bronchoalveolar lavage (BAL), and CT-guided cytology. Thoracic radiographs revealed micronodular calcifications in the lungs, with sandstorm appearance. Computed tomography of the thorax showed the presence of numerous mineralized high-density agglomerates of multiple sizes throughout the pulmonary parenchyma, a reticular pattern with ground glass opacity and intense mineralized fibrosis of the pleural lining. Head CT was unremarkable. BAL and CT-guided cytology were inconclusive, but imaging features strongly suggest the diagnosis of PAM, which was histologically confirmed after necropsy. Conclusions This case report contributes to the clinicopathological and imaging characterization of pulmonary alveolar microlithiasis in dogs. In this species, the diagnosis of PAM should be considered when CT features evidence a reticular pattern with ground glass opacity and the presence of an elevated number and size of calcifications.
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Affiliation(s)
- Ana Canadas Sousa
- Department of Molecular Pathology and Immunology, Veterinary Pathology Laboratory, Institute of Biomedical Sciences Abel Salazar - University of Porto (ICBAS-UP), Rua Jorge Viterbo Ferreira 228, 4050-31, Porto, Portugal
| | - Joana C Santos
- Department of Veterinary Clinics, Institute of Biomedical Sciences Abel Salazar - University of Porto (ICBAS- UP), Veterinary Hospital of the University of Porto (UPVet), Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Clara Landolt
- Department of Veterinary Clinics, Institute of Biomedical Sciences Abel Salazar - University of Porto (ICBAS- UP), Veterinary Hospital of the University of Porto (UPVet), Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Catarina Gomes
- Department of Veterinary Clinics, Institute of Biomedical Sciences Abel Salazar - University of Porto (ICBAS- UP), Veterinary Hospital of the University of Porto (UPVet), Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Patrícia Dias-Pereira
- Department of Molecular Pathology and Immunology, Veterinary Pathology Laboratory, Institute of Biomedical Sciences Abel Salazar - University of Porto (ICBAS-UP), Rua Jorge Viterbo Ferreira 228, 4050-31, Porto, Portugal
| | - Cláudia S Baptista
- Department of Veterinary Clinics, Institute of Biomedical Sciences Abel Salazar - University of Porto (ICBAS- UP), Veterinary Hospital of the University of Porto (UPVet), Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal. .,Centro de Estudos de Ciência Animal (ICETA-CECA), Instituto de Ciências e Tecnologias Agrárias e Agro-Alimentares da Universidade do Porto, Rua D. Manuel II, Apartado, 55412, 4051-401, Porto, Portugal.
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