Extracardiac intrapericardial myxosarcoma causing right ventricular outflow tract obstruction in a dog

Karlin, Emily T; Yang, Vicky; Prabhakar, Manu; Gregorich, Scott L.; Hahn, S.

doi:10.1016/j.jvc.2018.01.004

Cited by 8 publications

(4 citation statements)

References 15 publications

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“…Because such protrusions had not been described in the published reports of sialoceles imaged with CT, neoplasms such as myxoma/myxosarcoma or lymphangioma/lymphangiosarcoma were listed as possible differential diagnoses in these dogs. [17][18][19] Histopathology of one of these six sialoceles implicated granulation tissue as the reason for these protrusions, whereas no comments were made in the reports for the other sialoceles. Sialocele walls develop as an inflammatory response to leaking saliva and are comprised of fibroblasts, collagen, small blood vessels, and variable numbers of leukocytes.…”

Section: Discussionmentioning

confidence: 92%

“…Although the external margins of all of the sialocele walls were smooth, we observed nodular and/or frond‐like contrast‐enhancing protrusions of variable size arising from the internal wall margins in six sialoceles. Because such protrusions had not been described in the published reports of sialoceles imaged with CT, neoplasms such as myxoma/myxosarcoma or lymphangioma/lymphangiosarcoma were listed as possible differential diagnoses in these dogs 17–19 . Histopathology of one of these six sialoceles implicated granulation tissue as the reason for these protrusions, whereas no comments were made in the reports for the other sialoceles.…”

Section: Discussionmentioning

confidence: 99%

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Computed tomographic appearance of sialoceles in 12 dogs

Oetelaar

Heng

Lim

et al. 2021

Vet Radiology Ultrasound

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Published findings on the computed tomographic (CT) appearance of sialoceles are limited to brief descriptions from reported cases in eight dogs and one cat. The authors have seen sialoceles with CT characteristics that are not consistent with these previous reports. The purpose of this multicenter, retrospective, descriptive, case series study was to provide more detailed descriptions of the CT appearance of confirmed sialoceles in dogs. Dogs over a 10-year period with cytologically or histologically confirmed sialoceles and pre-and postcontrast CT studies of the head were included.Multiple qualitative and quantitative features were described for each sialocele with histological correlation. Twelve dogs with a total of 13 sialoceles were identified, including: seven cervical sialoceles, three complex (combined cervical and sublingual) sialoceles, two sublingual sialoceles, and one zygomatic sialocele. All sialoceles were characterized by fluid attenuating, non-contrast enhancing contents (median 18.5 HU) and soft tissue attenuating, contrast-enhancing walls. The external margins of all sialocele walls were smooth; however, the internal margins in six sialoceles were irregular with poorly defined nodular to frond-like protrusions. Mineralized foci of variable size (range < 1 mm to 4.8 mm) and attenuation (range 119 to 1253 HU) were present in seven sialoceles and histologically identified as sialoliths (three sialoceles) and osseous metaplasia (two sialoceles). A unique finding in the sialoceles in this study was the presence of intraluminal nodular to frond-like protrusions arising from the wall. This study also reports the CT appearance of cervical and complex sialoceles and sialocele mineralizations.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Computed tomographic appearance of sialoceles in 12 dogs

Oetelaar

Heng

Lim

et al. 2021

Vet Radiology Ultrasound

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“…La recomendación quirúrgica para una neoplasia pericárdica es la exéresis quirúrgica del tumor, ya sea una pericardiectomía completa si la masa está muy diseminada (al mediastino) o pericardiectomía subfrénica en casos de masas circunscritas al corazón (Karlin et al, 2018). En el presente caso, la pericardiectomía fue un procedimiento paliativo que tuvo por objetivo evitar una futura acumulación de líquido en el saco pericárdico y el taponamiento cardiaco (Parra et al, 2009).…”

Section: Discussionunclassified

Rabdomiosarcoma pericárdico en un canino Schnauzer de 9 años

Dávila

Chávez

et al. 2020

Rev. investig. vet. Perú

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Se presenta el caso de un canino macho Schnauzer de 9 años con historia de inapetencia, letargia e intolerancia al ejercicio. Se realizaron ecocardiografías identificándose efusión pericárdica y una masa de tipo neoplásica en el pericardio. El paciente presentó taponamiento cardiaco, el cual fue tratado con una pericardiocentesis. Estabilizado el paciente, se realizó una pericardiectomía parcial subfrénica extrayéndose la masa neoplásica. El diagnóstico histopatológico fue de rabdomiosarcoma pericárdico de tipo pleomórfico. El paciente tuvo un tiempo de sobrevida de 10 semanas. Para el presente caso, el manejo quirúrgico brindó mejora clínica sostenida y contribuyó al proceso diagnóstico.

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“…Cardiac myxosarcoma in dogs are also very rare. One paper reported an extracardiac intrapericardial myxosarcoma of approximately 3 × 4.5 cm obstructing the right ventricular outflow tract [15].…”

Section: Discussionmentioning

confidence: 99%

A rare case of intracardiac fibrosarcoma with myxoid features inducing venous occlusion in a dog – a case report

et al. 2018

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BackgroundIn both humans and animals, cardiac fibrosarcoma is rare among primary cardiac malignant neoplasia. The overall prevalence of cardiac neoplasia in dogs is low, reported to be between 0.17% and 0.19% of hospital admissions. The aim of this report is to describe the clinical and pathological findings of a dog presenting signs of right sided congestive heart failure due to an intracardiac and venous obstructing mass, diagnosed by histopathology as cardiac fibrosarcoma with myxoid features.Case presentationA 7 years old male mix breed Husky weighing 23 kg was presented to our Veterinary Teaching Hospital the owner reporting weight loss, inappetence and exercise intolerance and on presentation exhibited breathlessness and an enlarged abdomen. A 5 minutes six leads electrocardiogram and cardiac ultrasonography were performed using standard, established techniques. Complete blood count, serum liver enzyme activities and renal parameters were assessed. Shortly after the cardiologic examination, the dog died and necropsy examination of the cardiovascular system revealed an elongated and branched mass attached dorsally to the endocardial insertion of the septal tricuspid valve leaflet. This mass extended retrogradely into the lumen of the cervical veins, obstructing the venous flow. Histological diagnosis of the mass was cardiac fibrosarcoma with myxoid features. Multiple metastases were found inside the lungs only.ConclusionThis is the first report describing a right cardiac fibrosarcoma with myxoid features and venous obstruction in a dog. Cardiac fibrosarcoma is a rare finding, however should be considered when an intracardiac mass is diagnosed.

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Extracardiac intrapericardial myxosarcoma causing right ventricular outflow tract obstruction in a dog

Cited by 8 publications

References 15 publications

Computed tomographic appearance of sialoceles in 12 dogs

Computed tomographic appearance of sialoceles in 12 dogs

Rabdomiosarcoma pericárdico en un canino Schnauzer de 9 años

A rare case of intracardiac fibrosarcoma with myxoid features inducing venous occlusion in a dog – a case report

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