Different Treatments of Symptomatic Angiomyolipomas of  the Kidney

Development of more sensitive imaging techniques has caused an increase in the number of diagnosed small renal tumors. Approximately 2–3% of these lesions are proved to be angiomyolipomas (AML), a rare benign tumor of the kidney sometimes causing pain and hematuria. The most required approach is observation, but in the case of recurrent symptoms or larger tumors, which may cause bleeding, a more active treatment is required. We present two cases of symptomatic AML tumors of different sizes in the kidney: one treated with transarterial embolization (TAE), and the other with percutaneous cryoablation (CRA). The lesions were diagnosed on the basis of contrast-enhanced computed tomography (CT) scan and magnetic resonance imaging (MRI). Both treatments proved to be effective and safe for treating renal AMLs. A follow-up carried out, based on contrast-enhanced CT scan, confirmed complete treatment of AML and decreased lesion size. There are myriad minimally invasive approaches for the treatment of renal AMLs, and the preservation of renal function remains a priority. The most popular treatment option is the selective renal artery embolization. Owing to its limited invasiveness, CRA could be an attractive option for the preventive treatment of AML.

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BILATERAL MULTIFOCAL RENAL CELL CARCINOMA

The Professional Medical Journal ◽

10.29309/tpmj/2008.15.03.2831 ◽

2008 ◽

Vol 15 (03) ◽

pp. 400-402

Author(s):

SALMAN `RASHID ◽

MUHAMMAD ARSHAD ◽

MAZHAR SHAFIQ ◽

M. Rafiq Zafar

Keyword(s):

Renal Cell Carcinoma ◽

Ct Scan ◽

Renal Cell ◽

Lesion Size ◽

Renal Cell Carcinomas ◽

Adjacent Organ ◽

Contrast Enhanced Ct ◽

Contrast Enhanced ◽

Enhanced Ct

Bilateral synchronous renal cell Carcinomas occur in approximately 1-3% of all patients with RCC.Ultrasound and contrast-enhanced CT scan are the most useful tests for diagnosing and staging. US has an advantageover CT in determination of nature of the lesion (solid/cystic). CT is more sensitive in evaluation of lesion size anddetection of calcification and necrosis. CT also has an advantage over US in evaluation of perinephric extension,adjacent organ infiltration and regional lymphadenopathy. Both US and CT are equally sensitive in detection of IVCthrombus.

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Suspected haemorrhagic cystitis in a dog as delayed complication after contrast-enhanced computed tomography

Veterinary Record Case Reports ◽

10.1136/vetreccr-2019-001011 ◽

2020 ◽

Vol 8 (1) ◽

pp. e001011

Author(s):

Nausikaa Devriendt ◽

Norbert van de Velde ◽

Emmelie Stock ◽

Evelien de Bakker ◽

Hilde de Rooster

Keyword(s):

Ct Scan ◽

Clinical Signs ◽

Lumbar Vertebra ◽

Multimodal Analgesia ◽

Haemorrhagic Cystitis ◽

Contrast Enhanced Ct ◽

Contrast Enhanced ◽

Enhanced Ct ◽

Delayed Complication ◽

Enhanced Computed Tomography

A 10-month-old female intact Australian shepherd dog was diagnosed with an intrapelvic mass. Blood and urinanalyses were unremarkable. A contrast-enhanced CT scan was performed to define the extent of the mass. A large, expansile, heterogeneous mass, extending from the ventral aspect of the last lumbar vertebra until the second caudate vertebra and invading the vertebral canal at the lumbosacral junction with displacement of all organs in the caudal abdomen, was diagnosed. Two days after the CT scan, the dog was euthanased because of deterioration of clinical signs despite the start of multimodal analgesia. Necropsy and subsequent histology and immunohistochemistry revealed the presence of a plasmacytoma and haemorrhagic cystitis. The haemorrhagic cystitis was most likely caused by the contrast agent used for the CT scan that remained in the bladder for a prolonged time, secondary to subobstruction of the urethra.

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MP36-06 USING AORTA-LESION-ATTENUATION-DIFFERENCE (ALAD) ON PREOPERATIVE CONTRAST-ENHANCED CT SCAN TO DIFFERENTIATE BETWEEN MALIGNANT AND BENIGN RENAL TUMORS

The Journal of Urology ◽

10.1016/j.juro.2018.02.1140 ◽

2018 ◽

Vol 199 (4S) ◽

Author(s):

Joseph Grajo ◽

Russell Terry ◽

Justin Ruoss ◽

Blake Noennig ◽

Jonathan Pavlinec ◽

...

Keyword(s):

Ct Scan ◽

Renal Tumors ◽

Contrast Enhanced Ct ◽

Contrast Enhanced ◽

Enhanced Ct

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The contrast-enhanced CT scan in the diagnosis of isodense subdural hematoma

Journal of Neurosurgery ◽

10.3171/jns.1979.50.1.0064 ◽

1979 ◽

Vol 50 (1) ◽

pp. 64-69 ◽

Cited By ~ 22

Author(s):

Fong Y. Tsai ◽

James E. Huprich ◽

Hervey D. Segall ◽

James S. Teal

Keyword(s):

Cerebral Cortex ◽

Ct Scan ◽

Subdural Hematoma ◽

Correct Diagnosis ◽

Content Type ◽

Subdural Hematomas ◽

Contrast Enhanced Ct ◽

Contrast Enhanced ◽

Enhanced Ct ◽

Fine Print

✓ The authors review 29 cases of surgically-proven isodense subdural hematomas examined by non-contrast and contrast-enhanced computerized tomography scans. Three types of isodense collections were noted: homogeneous isodense collections, mixed-density collections, and gravitational layering within subdural collections. Contrast enhancement within the cerebral cortex, cortical vessels, and subdural membranes led to the correct diagnosis in each case. Contrast-enhanced scans are essential for the evaluation of isodense subdural hematomas.

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Using Aorta-Lesion-Attenuation Difference on Preoperative Contrast-enhanced Computed Tomography Scan to Differentiate Between Malignant and Benign Renal Tumors

Urology ◽

10.1016/j.urology.2018.11.036 ◽

2019 ◽

Vol 125 ◽

pp. 123-130 ◽

Cited By ~ 1

Author(s):

Joseph R. Grajo ◽

Russell S. Terry ◽

Justin Ruoss ◽

Blake J. Noennig ◽

Jonathan G. Pavlinec ◽

...

Keyword(s):

Computed Tomography ◽

Renal Tumors ◽

Computed Tomography Scan ◽

Contrast Enhanced ◽

Enhanced Computed Tomography ◽

Contrast Enhanced Computed Tomography ◽

Tomography Scan

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Abdominal case of the day. Focal liver enhancement on contrast-enhanced CT scan caused by obstruction of the superior vena cava (SVC).

American Journal of Roentgenology ◽

10.2214/ajr.169.1.9207535 ◽

1997 ◽

Vol 169 (1) ◽

pp. 250-250 ◽

Cited By ~ 2

Author(s):

T E Herbener ◽

V Basile ◽

D Nakamoto ◽

H E Butler ◽

S P Pickering

Keyword(s):

Ct Scan ◽

Superior Vena Cava ◽

Superior Vena ◽

Vena Cava ◽

Contrast Enhanced Ct ◽

Contrast Enhanced ◽

Enhanced Ct

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Is CT Angiogram of the Abdominal Vessels Needed following the Diagnosis of Ischemic Colitis? A Multicenter Community Study

ISRN Gastroenterology ◽

10.1155/2014/756926 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

Muhammed Sherid ◽

Salih Samo ◽

Samian Sulaiman ◽

Husein Husein ◽

Sankara N. Sethuraman ◽

...

Keyword(s):

Ct Scan ◽

Ischemic Colitis ◽

Celiac Trunk ◽

Ct Angiogram ◽

Contrast Enhanced Ct ◽

Contrast Enhanced ◽

Enhanced Ct ◽

Group 3 ◽

Group 5 ◽

Atherosclerotic Changes

Background. CT angiogram is frequently obtained after diagnosis of ischemic colitis (IC). Aims. To investigate the vascular findings of CT angiogram as compared to contrast-enhanced CT scan and whether this modality changes the management or prognosis of IC. Methods. We conducted a retrospective analysis of patients with IC from 2007 to 2013. Results. CT angiogram was performed in 34 patients (28.81%), whereas contrast-enhanced CT scan was performed in 54 patients (45.76%). In CT angiogram group, 8 patients (23.5%) had atherosclerotic changes. Stenosis was found in 12 patients (35.3%) (9: celiac trunk, 3: SMA). Among this group, one patient underwent colectomy and another underwent angioplasty of the celiac trunk who died within 30 days. Among contrast-enhanced CT scan group, 5 patients (9.3%) had atherosclerotic changes. Stenosis was found in 5 patients (9.3%) (3: celiac trunk, 1: SMA, and 1: IMA). Among this group, 3 patients had colectomy and one died within 30 days. There was no statistical difference between both groups in all vascular findings except the stenosis which was higher in CT angiogram group (P=0.0025). Neither the need for surgery nor all-cause mortality was different between both groups. Conclusion. CT angiogram did not provide any useful findings that altered the management or the prognosis of IC.

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The Effect of Contrast-enhanced Computed Tomography (CT) Scans on the Calculated Dose of Radiotherapy in a Thorax Phantom

International Journal of Cancer Management ◽

10.5812/ijcm.84158 ◽

2021 ◽

Vol In Press (In Press) ◽

Author(s):

Athar Ehtiati ◽

Payman Hejazi ◽

Mohsen Bakhshandeh ◽

Ali Jabbary Arfaee ◽

Eftekhar Rajab Bolookat ◽

...

Keyword(s):

Computed Tomography ◽

Contrast Media ◽

Ct Scan ◽

Treatment Planning ◽

Tumor Volume ◽

Ct Scans ◽

Contrast Enhanced ◽

Enhanced Ct ◽

Enhanced Computed Tomography ◽

Contrast Enhanced Computed Tomography

Background: Despite the benefits of contrast-enhanced computed tomography (CT) scans in better tumor volume delineation, it can affect the accuracy of dose calculation in radiation therapy. This study examined this effect on a thorax phantom. Objectives: The influence of different variables including the concentrations of the Visipaque contrast media, tumor sizes, and CT scan energies on the dose measurement was examined. Methods: Transparent cylinders containing the contrast media were inserted in the lung area of the phantom and the CT scans were made. Non-enhanced CT scans were also acquired. Treatment planning using 2 opposite fields was performed on the CT scans and the doses were calculated in the treatment planning system. The results of the 2 sets of enhanced and non-enhanced CT scans were compared. Results: The correlation between concentration and the percentage of mean dose of the tumor volume was significant in 2 of the tumor sizes. The differences in the mean doses of the 2 plans were examined and more than 3% increase was observed in higher concentrations of the contrast media. Conclusions: According to this study, the suitable concentration of the contrast media administered and the CT scan energy should be considered. This would help to decrease the discrepancies between the calculated and delivered dose in radiotherapy treatments to a clinically acceptable level. The importance of time delays for CT scans after administration of the contrast media is emphasized.

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