Multi-factorial considerations for intra-thoracic lymph node evaluations of healthy cats on computed tomographic images

Thammasiri, Ninlawan; Thanaboonnipat, Chutimon; Choisunirachon, Nan; Darawiroj, Damri

doi:10.1186/s12917-021-02771-7

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…This present study used a slice thickness of 1.25 mm for heart size evaluation based on the recommendations of a previous study as being suitable for intrathoracic structure evaluation in cats ( Thammasiri et al , 2021 ). Additionally, several advantages of the greater slice thickness images when compared to the smaller ones have been reported, including less data storage required and greater signal-to-noise ratio (SNR) ( Alshipli and Kabir, 2017 ).…”

Section: Discussionmentioning

confidence: 99%

Computed tomographic evaluation of heart size in clinically healthy cats

Wanglerm¹,

Samachikthummakun²,

Kitnitchee³

et al. 2023

Open Vet J

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Background: Computed tomography (CT) is currently one of the most useful diagnostic imaging tools for evaluating cardiac disorders in humans and animals. However, studies concerning CT and the feline heart remain scarce. Aim: To create measuring techniques for the feline heart size on CT and to determine the relationships of feline heart size observed on CT with internal parameters including age, bodyweight (BW), and sex. Methods: Four parameters observed on CT including thoracic height/width ratio (THW), relative heart area (RHA), CT vertebral heart score (ctVHS), transverse vertebral heart score (tVHS) in 1.25 mm slice thickness, and both pre- and post-contrast enhanced images were examined. Additionally, radiographic vertebral heart score (rVHS) was also evaluated. Results: THW was significantly influenced by age (p < 0.05). RHA was affected by age and gonadal status of cats (p = 0.001 and p = 0.016, respectively). Age also significantly affected tVHS (p = 0.038). Interestingly, ctVHS was not influenced by age, sex, gonadal status, or BW. tVHS and ctVHS had significant moderately positive correlations with rVHS (r = 0.476; p = 0.048 and r = 0.6112; p = 0.011, respectively). THW and RHA had non-significant correlations with rVHS (r = 0.2642; p = 0.302 and r = 0.1920; p = 0.455, respectively). Conclusion: CT heart size evaluation can be performed in both pre- and post-contrast enhanced images of 1.25 mm slice thickness. tVHS and ctVHS are recommended parameters for evaluating feline heart size in clinical practice.

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Section: Discussionmentioning

confidence: 99%

Computed tomographic evaluation of heart size in clinically healthy cats

Wanglerm¹,

Samachikthummakun²,

Kitnitchee³

et al. 2023

Open Vet J

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“…The inclusion criteria for each group were as follows: Gr. I included CT images of cats that were clinically confirmed to be healthy and were acquired for other purposes such as intrathoracic structure studies ( 24 ), whereas Gr. II included CT images of cats with pulmonary parenchymal abnormalities, including interstitial or alveolar lung pattern, pleural effusion, and cardiovascular diseases.…”

Section: Methodsmentioning

confidence: 99%

Computed tomographic diaphragmatic thickness: a promising method for the evaluation of diaphragmatic muscle in cardiopulmonary diseased cats

Saisawart,

Sutthigran,

Suksangvoravong

et al. 2023

Front. Vet. Sci.

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Diaphragmatic dysfunction (DD) is defined as a weakening of the diaphragmatic muscle and can be an undetected cause of dyspnea. The objectives of this study were to explore the appropriate diaphragmatic location, measure diaphragmatic thickness (DT), evaluate the effect of intrinsic factors on DT, and compare DT between healthy and diseased cats, using 33 healthy cats and 15 diseased cats. A retrospective, analytical, case–control study using thoraco-abdominal feline computed tomography (CT) was performed. Two radiologists independently reviewed all images to verify inter- and intra-observer reliabilities and the best position for measuring DT. The effects of sex, age, and body weight were also studied, and cutoff values for detecting DT abnormalities were established. The results showed that the appropriate location for DT measurement was at the ventral border of the cranial endplate of the first lumbar vertebral body (L1) due to its highest intra- and inter-observer reliabilities. At this location, a significant difference in DT between the right and left hemidiaphragms (p = 0.01) was observed. Only sex had an impact on DT values. Interestingly, the DTs of cardiorespiratory-affected cats, both on the right and left sides, were significantly thinner than those of healthy cats. In conclusion, CT imaging is a reliable imaging method for determining diaphragmatic muscular atrophy. The ventral border of the cranial endplate of L1 is recommended for measuring the DT, and sex was the only factor affecting the DT measurement.

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“…Differentials for pleural and pericardial fluid included impaired systemic venous return due to cardiac displacement and FIP. Differentials for lymphadenopathy included granulomatous disease, reactive lymphadenopathy and metastasis 12,13 …”

Section: Investigationsmentioning

confidence: 99%

Thymic carcinoma and branchial cyst in a cat

Tindale

Jasensky

O'Brien

et al. 2021

Vet Record Case Reports

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A 10‐year‐old female spayed Maine Coon presented with lethargy, weight loss and severe dyspnoea. Radiographs showed mediastinal enlargement and marked pleural effusion. Thoracocentesis yielded a highly protein‐rich transudate with macrophages predominating. Computed tomography identified a large cystic mediastinal structure with a typical peripheral contrast‐enhancing rim, but fluid contents with a high attenuation of 35HU and internal contrast‐enhancing projections raising concern for neoplasia. However, mediastinal cytology failed to demonstrate neoplastic cells, but instead ciliated columnar epithelium most consistent with a thymic branchial cyst. The cat underwent median thoracotomy and mediastinal mass resection and is well 6 months postoperatively, with no evidence of recurrence. Histopathology with immunohistochemistry diagnosed thymic carcinoma, with branchial duct remnants. This report highlights the diagnostic challenge of mediastinal cystic lesions and the possible concurrent presence of a non‐neoplastic and a malignant neoplastic process.

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Multi-factorial considerations for intra-thoracic lymph node evaluations of healthy cats on computed tomographic images

Cited by 4 publications

References 32 publications

Computed tomographic evaluation of heart size in clinically healthy cats

Computed tomographic evaluation of heart size in clinically healthy cats

Computed tomographic diaphragmatic thickness: a promising method for the evaluation of diaphragmatic muscle in cardiopulmonary diseased cats

Thymic carcinoma and branchial cyst in a cat

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