scholarly journals Rare Case of Gastric Schwannoma Simulating Gastrointestinal Stromal Tumour-A Case Report

2022 ◽  
Author(s):  
Shruthi Panduranga ◽  
Samson Kade ◽  
Pooja Varwatte ◽  
Harisha V
Keyword(s):  
Computed Tomography ◽  
Rare Case ◽  
Gastrointestinal Stromal Tumour ◽  
Gastric Schwannoma ◽  
Contrast Enhanced ◽  
S 100 ◽  
Enhanced Computed Tomography ◽  
Slow Growing ◽  
Contrast Enhanced Computed Tomography ◽  
Lymphoid Aggregates

Abstract Gastric schwannoma (GS) is a rare, benign, slow-growing neoplasm representing 0.2% of all gastric tumors. We report a rare case of Gastric schwannoma in a 56 year old woman who presented with abdominal discomfort and vomiting since few years. Contrast enhanced Computed Tomography showed a well-defined homogeneously attenuating lesion with homogenous enhancement. Wedge gastrectomy was done with a possible diagnosis of Gastrointestinal stromal tumor, but was confirmed to have Gastric schwannoma on histopathology showing spindle cells with peripheral cuff of lymphoid aggregates and S-100 protein positivity on immunohistochemistry. Gastric schwannoma should be included in the differential diagnosis of a gastric intramural or exophytic mass when Computed Tomography shows a well-defined homogeneously attenuating lesion with progressively increasing homogenous enhancement without hemorrhage, necrosis, and degeneration.

scholarly journals Unusual trichobezor of stomach and intestines as a manifestation of Rapunzel syndrome: a rare case report

2019 ◽  
Vol 6 (12) ◽  
pp. 4569
Author(s):  
Tejinder Pal Singh Sodhi ◽  
Sameer Pundeer ◽  
Maneshwar Singh Utaal ◽  
Kirti Savyasacchi Goyal
Keyword(s):  
Computed Tomography ◽  
Rare Case ◽  
Proximal Jejunum ◽  
Rare Form ◽  
Rapunzel Syndrome ◽  
Contrast Enhanced ◽  
Rare Case Report ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography ◽  
Entire Stomach

Rapunzel syndrome is a rare form of trichobezoar with accumulation of large amounts of hair extending from stomach to variable portion of small intestine. An 18 year old girl was brought to surgery opd with complaints of vomiting on and off since 3 months. Contrast enhanced computed tomography abdomen showed a bezoar extending from stomach into the duodenum and proximal jejunum suggestive of Rapunzel syndrome with 3rd and 4th part of duodenum along with duodenojejunal junction. On laparotomy, a trichobezoar occupying the entire stomach measured 100 cm in length and 700 grams in weight. Since the mass formed in Rapunzel syndrome is generally too large to be removed endoscopically or laparoscopically, it requires removal by open gastrostomy. 

scholarly journals Porcine Ex Vivo Liver Phantom for Dynamic Contrast-Enhanced Computed Tomography

2011 ◽  
Vol 46 (9) ◽  
pp. 586-593 ◽  
Author(s):  
Scott M. Thompson ◽  
Juan C. Ramirez-Giraldo ◽  
Bruce Knudsen ◽  
Joseph P. Grande ◽  
Jodie A. Christner ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ex Vivo ◽  
Dynamic Contrast Enhanced ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Liver Phantom ◽  
Contrast Enhanced Computed Tomography

scholarly journals Contrast enhanced computed tomography findings in 105 horse distal extremities.

2021 ◽  
pp. 103704
Author(s):  
Frederik Pauwels ◽  
Angela Hartmann ◽  
John Al-Alawneh ◽  
Paul Wightman ◽  
Jimmy Saunders
Keyword(s):  
Computed Tomography ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography

scholarly journals Self-navigated 3D whole-heart MRA for non-enhanced surveillance of thoracic aortic dilation: a comparison to CTA

2021 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
P Poskaite ◽  
M Pamminger ◽  
C Kranewitter ◽  
C Kremser ◽  
M Reindl ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Aortic Aneurysm ◽  
Thoracic Aortic Aneurysm ◽  
Aortic Dilation ◽  
Subjective Image Quality ◽  
Contrast Enhanced ◽  
Whole Heart ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography

Abstract Funding Acknowledgements Type of funding sources: None. Background The natural history of thoracic aortic aneurysm (TAA) is one of progressive expansion. Asymptomatic patients who do not meet criteria for repair require conservative management including ongoing aneurysm surveillance, mostly carried out by contrast-enhanced computed tomography angiography (CTA). Purpose To prospectively compare image quality and reliability of a prototype non-contrast, self-navigated 3D whole-heart magnetic resonance angiography (MRA) with contrast-enhanced computed tomography angiography (CTA) for sizing of thoracic aortic aneurysm (TAA). Methods Self-navigated 3D whole-heart 1.5 T MRA was performed in 20 patients (aged 67 ± 8.6 years, 75% male) for sizing of TAA; a subgroup of 18 (90%) patients underwent additional contrast-enhanced CTA on the same day. Subjective image quality was scored according to a 4-point Likert scale and ratings between observers were compared by Cohen’s Kappa statistics. Continuous MRA and CTA measurements were analyzed with regression and Bland-Altman analysis. Results Overall subjective image quality as rated by two observers was 1 [interquartile range (IQR) 1-2] for self-navigated MRA and 1.5 [IQR 1-2] for CTA (p = 0.717). For MRA a perfect inter-observer agreement was found for presence of artefacts and subjective image sharpness (κ=1). Subjective signal inhomogeneity correlated highly with objectively quantified inhomogeneity of the blood pool signal (r = 0.78-0.824, all p <0.0001). Maximum diameters of TAA as measured by self-navigated MRA and CTA showed excellent correlation (r = 0.997, p < 0.0001) without significant inter-method bias (bias -0.0278, lower and upper limit of agreement -0.74 and 0.68, p = 0.749). Inter- and intraobserver correlation of aortic aneurysm as measured by MRA was excellent (r = 0.963 and 0.967, respectively) without significant bias (all p ≤ 0.05). Conclusion Self-navigated 3D whole-heart MRA enables reliable contrast- and radiation free aortic dilation surveillance without significant difference to standardized CTA while providing predictable acquisition time and by offering excellent image quality. Abstract Figure.

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