Comparisons Among Computed Tomographic Features of Adipose Masses in Dogs and Cats

Spoldi, Elisa; Schwarz, Tobias; Sabattini, Silvia; Vignoli, Massimo; Cancedda, Simona; Rossi, Federica

doi:10.1111/vru.12445

Cited by 24 publications

(51 citation statements)

References 45 publications

(64 reference statements)

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“…Computed tomography (CT) is commonly used in veterinary medicine and plays an important role in disease identification and cancer staging. The CT appearance of several infectious, inflammatory and neoplastic conditions has been described in cats including mycobacterial infections, peritonitis, pancreatitis, mediastinal masses, adipose masses, and fibrosarcoma . Differentiation of normal versus disease‐affected abdominal lymph nodes on CT is important not only for clinical and therapeutic decision making, but also for cancer staging and prognostication.…”

Section: Introductionmentioning

confidence: 99%

Computed tomographic appearance of abdominal lymph nodes in healthy cats

Perlini

Bugbee

Secrest

2018

Veterinary Internal Medicne

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BackgroundComputed tomography (CT) is commonly used in veterinary medicine and plays an important role in disease identification and cancer staging. Identification of abnormal abdominal lymph nodes is important for clinical, therapeutic, and prognostic decision making. No published study describes the CT appearance of abdominal lymph nodes in healthy cats.Hypothesis/ObjectivesAll abdominal lymph centers will be identified on CT with the majority of lymph nodes being elongated and homogenously contrast enhancing.AnimalsSixteen healthy cats without clinical or biochemical evidence of disease.MethodsPrecontrast and postcontrast CT images of sedated healthy cats were used to identify the presence and descriptive characteristics of intra‐abdominal lymph nodes. These assessments then were compared with patient characteristics to identify possible correlations.ResultsAbdominal lymph nodes were readily identified on CT with caudal mesenteric, colic, hepatic, inguinal, and pancreaticoduodenal lymph nodes identified in 16/16 cats. Lymph node size and shape varied among lymph centers with nearly all lymph nodes homogeneously contrast enhancing in 515/525. Significant negative correlations were identified between age and length (P = .0166) and width (P = .0387) of abdominal lymph nodes as well as age and number of sacral lymph nodes (P = .0493). Intranodal fat was present in 18/525 lymph nodes.Conclusions and Clinical ImportanceCT readily permitted identification and characterization of feline abdominal lymph nodes. This study provides subjective and objective data on the CT characteristics of abdominal lymph nodes in 16 healthy cats, with younger cats having larger abdominal lymph nodes and a higher number of sacral lymph nodes.

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Section: Introductionmentioning

confidence: 99%

Computed tomographic appearance of abdominal lymph nodes in healthy cats

Perlini

Bugbee

Secrest

2018

Veterinary Internal Medicne

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“…Liposarcomas represent the malignant form of lipomatous lesions. They are locally aggressive, easily recurrent lesions, but do not tend to metastasize 2. To the authors’ knowledge, a sublingual lipoma has not been previously reported.…”

Section: Discussionmentioning

confidence: 77%

Sublingual infiltrative lipoma in a dog mimicking a ranula

Moris¹,

Barker²,

Taeymans³

et al. 2017

Vet Record Case Reports

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A 7-year-old neutered female Staffordshire Bull Terrier was referred for a suspected sublingual sialocoele or ranula. The patient had a three-week history of a soft, non-painful, left submandibular swelling that had extended to the intermandibular and sublingual areas. Cytopathological findings from fine-needle aspiration were indicative of either non-representative subcutaneous fat or a lipoma. CT of the head and neck was performed to evaluate these two clinical possibilities further, confirming the presence of a focal, mainly intermandibular, lipoma with a mean precontrast attenuation of −114 Hounsfield Units (HU). Despite the clinical presentation of this patient being more suggestive of a ranula, this case highlights that other differentials should be considered when facing an intermandibular lesion. Advanced imaging modalities can help in assessing the extension and internal characteristics of submandibular swelling in dogs.

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“…On CT imaging, the majority of lipomas are homogeneous masses, while liposarcomas are usually heterogeneous with a large non‐adipose component that are often nodular . Although lipomas can often be suspected based on their radiographic or ultrasonographic appearance, distinguishing infarcted or necrotic lipomas from malignant lesions can prove challenging, even with advanced imaging techniques such as CT, as both can exhibit a heterogeneous appearance, with hyperattenuating components/streaks.…”

Section: Discussionmentioning

confidence: 99%

“…Although lipomas can often be suspected based on their radiographic or ultrasonographic appearance, distinguishing infarcted or necrotic lipomas from malignant lesions can prove challenging, even with advanced imaging techniques such as CT, as both can exhibit a heterogeneous appearance, with hyperattenuating components/streaks. These regions most likely represent areas of nonlipogenic sarcoma (in liposarcomas), necrosis, hemorrhage, fibrocollagenous septation, and/or residual muscular bands (in infiltrative lipomas) …”

Section: Discussionmentioning

confidence: 99%

Fine‐needle aspirate of a large mass in the ventral peritoneal space of a dog

Conrado

Spoldi

Kieran

et al. 2019

Veterinary Clinical Pathol

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| CASE PRESENTATIONAn 11-year-old, neutered male, Labradoodle was presented to the University of Florida's Small Animal Hospital for restaging of a meibomian gland carcinoma removed from his right inferior eyelid 3 years prior. On presentation, the dog had multiple masses throughout the body, including several subcutaneous lipomas and a cutaneous keratin-filled lesion between the ears, which were diagnosed by fine-needle aspiration and cytologic evaluation. A CBC and chemistry profile revealed a mild normocytic normochromic anemia (packed cell volume [PCV] 37%, reference interval [RI] 40-56; mean corpuscular volume [MCV] 69.2 fL, RI 64.0-74.0; mean corpuscular hemoglobin concentration (MCHC) 34.3, RI 33.0-38.0) and a moderately increased ALT activity (303 U/L, RI 18.0-64.0). A triple-phase helical computed tomography (CT) of the thorax, abdomen, and pelvis was performed for metastasis screening. A welldefined, heterogeneous, fat-and fluid-attenuating, bilobed mass was found within the left ventral peritoneal space, between the greater curvature of the stomach and the spleen, and ventral to the transverse colon. The mass measured approximately 12.0 × 6.5 × 6.5 cm (L × H × W) and was characterized by a soft tissue, contrast-enhancing capsule, a large, fluid-filled, non-contrast enhancing, irregularly margined central component, and multiple linear hyperattenuating striations within the fat-attenuating, non-contrast enhancing periphery (Figure 1). Multiple, hyperattenuating striations were seen within the peritoneal fat surrounding the mass. A fine-needle aspirate was submitted for cytologic evaluation (Figure 2).

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Comparisons Among Computed Tomographic Features of Adipose Masses in Dogs and Cats

Cited by 24 publications

References 45 publications

Computed tomographic appearance of abdominal lymph nodes in healthy cats

Computed tomographic appearance of abdominal lymph nodes in healthy cats

Sublingual infiltrative lipoma in a dog mimicking a ranula

Fine‐needle aspirate of a large mass in the ventral peritoneal space of a dog

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