Paraganglioma van het ganglion celiacum bij een hond

Couturier, Laurent; Guillaumot, Pierre; Duboy, Julie; Gory, Guillaume

doi:10.21825/vdt.v83i2.16659

Cited by 1 publication

(5 citation statements)

References 20 publications

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“…Consistent with the anatomic study describing the largest amount of paraganglial tissue between the AGs and the caudal mesenteric artery, 8 we located most of the tumors cranial to the latter, with the most common location being bounded by the phrenicoabdominal and renal arteries. Quite similarly, previous case reports in dogs described masses positioned around the celiac artery, [13][14][15] right AG, 9 or caudal to the right kidney. 5 In people, localization was found not to be associated with outcome.…”

Section: Discussionsupporting

confidence: 73%

“…Computed tomography features observed in our study were consistent with those described in pheochromocytoma in dogs where fast and strong contrast enhancement is common, 32,33 and with the only previously described canine retroperitoneal paraganglioma. 15 Rich capillary network and subsequent intense postcontrast attenuation are also described in humans 23,25 and leopard. 11 Heterogeneity of the parenchyma is also a common finding in retroperitoneal paragangliomas in people as cystic changes, necrosis, hemorrhage, and mineralization are frequent.…”

Section: Discussionmentioning

confidence: 98%

“…In our study, older animals were affected (range 7-13 years), comparable to published case reports that included dogs aged 9 to 11 years. 5,[13][14][15] However, younger dogs may be affected as a mediastinal paraganglioma was described in a 1.5-year-old dog. 12 In humans, this neoplasia typically affects middle-aged adults without sparing pediatric patients.…”

Section: Discussionmentioning

confidence: 99%

“…12 If these neoplasms are functional, excess of catecholamines will create similar nonspecific, episodic clinical signs observed with pheochromocytomas. 4,5 Few retroperitoneal paragangliomas have been reported in dogs 5,9,[13][14][15] or have been included in studies evaluating pheochromocytomas 16 ; all were identified adjacent to the anatomical location of the AG. Other studies have included diagnostic imaging description of parasympathetic paragangliomas affecting the head and neck, [17][18][19] mediastinum, 12,20,21 and spine 22 of dogs.…”

mentioning

confidence: 99%

“…Other studies have included diagnostic imaging description of parasympathetic paragangliomas affecting the head and neck, [17][18][19] mediastinum, 12,20,21 and spine 22 of dogs. Aside from a single ultrasound and CT description in a dog 15 or brief, 5 nonspecific 16 ultrasonographic characterization, no description of diagnostic imaging features of canine retroperitoneal paragangliomas are available to date. Apart from descriptions in human beings, [23][24][25][26] this localization and type of neoplasm has only been described ultrasonographically in two cats 10,27 and on CT study in a cougar.…”

mentioning

confidence: 99%

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Imaging features of retroperitoneal extra‐adrenal paragangliomas in 10 dogs

Gombert

Diana

Hecht

et al. 2022

Vet Radiology Ultrasound

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Retroperitoneal paragangliomas are rare tumors of the neuroendocrine system. Only a few canine case reports are available with rare descriptions of their imaging features.The objectives of this multi-center, retrospective case series study were to describe the diagnostic imaging features of confirmed retroperitoneal paragangliomas and specify their location. Medical records and imaging studies of 10 affected dogs with cytological or histopathologic results concordant with retroperitoneal paragangliomas were evaluated. Dogs had a median age of 9 years. Four of them had clinical signs and laboratory reports compatible with excessive production of catecholamines. Six ultrasound, four CT, four radiographic, and one MRI studies were included. The paragangliomas did not have a specific location along the aorta. They were of various sizes (median 33 mm, range: 9-85 mm of length). Masses had heterogeneous parenchyma in six of 10 dogs, regardless of the imaging modality. Strong contrast enhancement was found in all CT studies. Encircling of at least one vessel was detected in six of 10 masses, clear invasion of a vessel was identified in one of 10 masses. In five of 10 cases, the masses were initially misconstrued as lymph nodes by the on-site radiologist. Retroperitoneal paragangliomas appear along the abdominal aorta, often presenting heterogeneous parenchyma, possibly affecting the local vasculature, and displaying strong contrast enhancement on CT. Clinical signs can be secondary to mass effects or excessive catecholamine production. Underdiagnosis and misdiagnosis of this tumor are suspected as they can be silent, of small size, or confused with other structures.

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