scholarly journals Incidental Detection of Adrenal Myelolipoma: A Case Report and Review of Literature

2013 ◽  
Vol 2013 ◽  
pp. 1-3 ◽  
Author(s):  
Junaid Nabi ◽  
Danish Rafiq ◽  
Fatema N. Authoy ◽  
Ghulam Nabi Sofi
Keyword(s):  
Computed Tomography ◽  
Imaging Techniques ◽  
Diagnostic Study ◽  
Hormone Production ◽  
Adrenal Myelolipoma ◽  
Cross Sectional ◽  
Cect Scan ◽  
The Right ◽  
Enhanced Computed Tomography ◽  
Upper Abdomen

Introduction. Adrenal myelolipoma is a rare tumor that is benign in nature, usually asymptomatic, unilateral, and nonsecreting. It is composed of variable mixture of mature adipose tissue and hematopoietic elements and develops within the adrenal gland. With the widespread use of cross-sectional imaging modalities such as ultrasonography and computed tomography, the incidental detection of these tumors is increasing in frequency.Case Presentation. We report a case of adrenal myelolipoma in a 63-year-old Kashmiri male, who presented with pain in the right upper abdomen. Physical examination was unremarkable. Ultrasound abdomen showed the presence of a hyperechoic mass in the right suprarenal region with undefined margins. Contrast-enhanced computed tomography (CECT) scan of abdomen revealed a well-defined, round lesion in the right suprarenal region with heterogeneous attenuation suggesting the possibility of myelolipoma. The patient was subjected to right adrenalectomy and his postoperative course was uneventful. The histopathological evaluation of the mass confirmed the initial diagnosis of adrenal myelolipoma.Conclusion. Although mostly discovered as an “incidentaloma”, the diagnosis of adrenal myelolipoma warrants thorough diagnostic study. Imaging techniques such as ultrasonography and CT scans as well as biochemical studies are useful for indicating the best treatment taking into account the size of the mass and possible hormone production. Surgical resection is advocated through extraperitoneal approach as it minimizes postoperative complications and leads to quicker recovery.

scholarly journals Cross-sectional anatomy, computed tomography, and magnetic resonance imaging of the banded houndshark (Triakis scyllium)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sang Wha Kim ◽  
Adams Hei Long Yuen ◽  
Cherry Tsz Ching Poon ◽  
Joon Oh Hwang ◽  
Chang Jun Lee ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Soft Tissues ◽  
Imaging Techniques ◽  
Evolutionary Developmental Biology ◽  
Phylogenetic Position ◽  
Ct Scanner ◽  
Resonance Imaging ◽  
Cross Sectional

AbstractDue to their important phylogenetic position among extant vertebrates, sharks are an invaluable group in evolutionary developmental biology studies. A thorough understanding of shark anatomy is essential to facilitate these studies and documentation of this iconic taxon. With the increasing availability of cross-sectional imaging techniques, the complicated anatomy of both cartilaginous and soft tissues can be analyzed non-invasively, quickly, and accurately. The aim of this study is to provide a detailed anatomical description of the normal banded houndshark (Triakis scyllium) using computed tomography (CT) and magnetic resonance imaging (MRI) along with cryosection images. Three banded houndsharks were scanned using a 64-detector row spiral CT scanner and a 3 T MRI scanner. All images were digitally stored and assessed using open-source Digital Imaging and Communications in Medicine viewer software in the transverse, sagittal, and dorsal dimensions. The banded houndshark cadavers were then cryosectioned at approximately 1-cm intervals. Corresponding transverse cryosection images were chosen to identify the best anatomical correlations for transverse CT and MRI images. The resulting images provided excellent detail of the major anatomical structures of the banded houndshark. The illustrations in the present study could be considered as a useful reference for interpretation of normal and pathological imaging studies of sharks.

Dynamics of the right atrio-ventricular junction in human: a spatial high-resolution study with multiphase computed tomography

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
J Jouan ◽  
I Masari ◽  
V Bliah ◽  
G Soulat ◽  
D Craiem ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cardiac Cycle ◽  
Cardiac Computed Tomography ◽  
Reconstruction Method ◽  
Imaging Data ◽  
High Definition ◽  
Vertical Projection ◽  
Horizontal Projection ◽  
Cross Sectional ◽  
The Right

Abstract Introduction In order to improve knowledge of the tricuspid valve (TV) function and its coupling with the right atrio-ventricular junction (RAVJ) and right ventricle (RV), new four-dimensional high-definition imagery methods are mandatory (3D+t). Purpose Using an innovative reconstruction method based on multiphase cardiac computed tomography imaging (4D-MCCTI), we finely analyzed the morphological & dynamical features of tricuspid annulus (TA) and RAVJ components in order to assess new functional parameters of TV and RV functions. Methods Volume imaging data sets through time were obtained from 4D-MCCTI of 30 subjects (sex ratio 1, mean age 57±11y.) with no rhythm, valvular or ventricular abnormalities on echocardiography and implemented in a custom software for 3D semi-automated delineation of 18 points around TA perimeter. Coordinates of these points in each of the 10 time-phases within an RR interval were used to calculate specific geometrical features of TA such as 3D/2D areas, perimeters, 360°-diameters and vertical deformation. Subsequently, RV and Right Atrium (RA) inner contours were also delineated (Figure). Results TA shape was elliptical in horizontal projection with a mean eccentricity index (EcI) of 0.58±0.12; and saddle-shapped in vertical projection with a horn nearby the antero-septal commissure. This feature remained throughout the cardiac cycle but TA was more planar (minimal TA-height: 4.47±1.04 mm) and circular (minimal EcI=0.44±0.14) in mid-diastole when TA-3Darea and TA-3Dperimeter reached a maximum of 6.98±1.21 cm2/m2 and 7.41±0.91 cm, respectively. Correlation between TA-3Darea, TA-2Darea and latero-septal diameter (LSD) were R2=0.99 and R2=0.73, respectively. LSD was minimal in early-systole (18.83±3.04 mm/m2) and maximal in mid-diastole (20.04±3.05 mm/m2). Correlation of TA-3Darea with RV and RA cross-sectional areas were R2=0.82 and R2=0.71, respectively. Conversely, there was no significant correlation between TA, RV and RA concentric contractions. Conclusions Our method for 4D-MTCCI analysis has allowed confirming the shape and dynamics function of RAVJ throughout the cardiac cycle in healthy subjects, and giving new reference parameters for TV and RV evaluation. Software multiplanar view of TA Funding Acknowledgement Type of funding source: None

scholarly journals Imaging techniques in the assessment of endovascular infrarenal abdominal aortic repair

2020 ◽  
Vol 73 (1-2) ◽  
pp. 29-35
Author(s):  
Aleksandar Spasic ◽  
Viktor Till ◽  
Marijana Basta-Nikolic ◽  
Djordje Milosevic ◽  
Darka Hadnadjev-Simonji ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Imaging Techniques ◽  
First Year ◽  
Imaging Method ◽  
Diagnostic Modality ◽  
Aortic Repair ◽  
Abdominal Aortic ◽  
Enhanced Computed Tomography

Introduction. Imaging is essential in the assessment of endovascular infrarenal abdominal aortic repair results. Complications include endoleaks, graft migration, kinking and infolding, stenosis, occlusion, and secondary ruptures. Examination Modalities. Contemporary imaging strategies are based on using noninvasive imaging modalities. After endovascular infrarenal abdominal aortic repair, the standard evaluation modality is computed tomography angiography, whereas additional modalities include magnetic resonance imaging, ultrasonography, and radiography. However, although an invasive imaging method, digital subtraction angiography is still performed in some patients. Computed tomography angiography provides excellent contrast, spatial resolution, and exact measurements of structures of interest, which is essential in the follow-up. Follow-up Protocol. Currently recommended follow-up protocol in the first year is contrast- enhanced computed tomography imaging at 1 and 12 months after the procedure. Conclusion. Due to its characteristics, reproducibility and availability, computed tomography angiography remains the cornerstone diagnostic modality of post-procedural assessment in patients with endovascular infrarenal abdominal aortic repair.

scholarly journals Primary mucosal malignant melanoma of the nasal cavity

2020 ◽  
Vol 6 (5) ◽  
pp. 988
Author(s):  
Subrata Mukhopadhyay ◽  
Misbahul Haque
Keyword(s):  
Computed Tomography ◽  
Malignant Melanoma ◽  
Nasal Cavity ◽  
Maxillary Antrum ◽  
Positron Emission ◽  
Recurrent Epistaxis ◽  
Mucosal Malignant Melanoma ◽  
The Right ◽  
Primary Mucosal Malignant Melanoma ◽  
Enhanced Computed Tomography

<p>Primary mucosal melanoma of the nasal cavity and paranasal sinuses is a very aggressive and rare disease with only about 0.5 % of malignant melanoma arising from the nasal cavity. There are only few reports from India. We report a rare case of sino-nasal mucosal malignant melanoma in a 58 years old female who presented with blackish coloured sino-nasal mass involving right nasal cavity, spontaneous and recurrent epistaxis and obliteration of the right naso-labial fold with occasional pain in the past 10 months. Contrast enhanced computed tomography scan showed a heterogenous mass involving right nasal cavity, right maxillary antrum and right ethmoidal area. A positron emission tomography computed tomography was also done which showed increased uptake in the region mentioned above. Initial biopsy, the mass was diagnosed as malignant melanoma. Total maxillectomy was performed with plan of post-operative radiotherapy.</p>

Failure of contrast enhanced computed tomography scans to identify an orbital abscess. The benefit of magnetic resonance imaging

2007 ◽  
Vol 122 (6) ◽  
pp. 639-640 ◽  
Author(s):  
D Mcintosh ◽  
M Mahadevan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Imaging Techniques ◽  
Acute Sinusitis ◽  
Illustrative Case ◽  
Resonance Imaging ◽  
Computed Tomography Scanning ◽  
Enhanced Computed Tomography ◽  
Orbital Complications

AbstractIntroduction:Acute sinusitis is a relatively common condition, which usually responds to medical therapy. In most cases, there are no sequelae or complications subsequent to this infection. However, like many acute illnesses, there are well documented complications of acute sinusitis, and in particular these include peri-orbital and intracranial spread.Objective:The purpose of this paper is to highlight the importance of vigilance in peri-orbital involvement and the limitations of imaging techniques, such as computed tomography scanning. An illustrative case is presented to demonstrate this.Conclusion:Magnetic resonance imaging scanning is a valuable modality in assessing complex presentations of peri-orbital complications of acute sinusitis.

scholarly journals Computed Tomography Appearance of the “Whirlpool Sign” in Ovarian Torsion

2021 ◽  
Vol 5 (4) ◽  
pp. 468-469
Author(s):  
Joshua Livingston ◽  
Savannah Gonzales ◽  
Mark Langdorf
Keyword(s):  
Computed Tomography ◽  
Lower Abdominal Pain ◽  
Cystic Mass ◽  
Ovarian Torsion ◽  
Venous Flow ◽  
Contrast Enhanced ◽  
Whirlpool Sign ◽  
Ovarian Pathology ◽  
The Right ◽  
Enhanced Computed Tomography

Case Presentation: A 28-year-old female presented to the emergency department complaining of right lower abdominal pain. A contrast-enhanced computed tomography (CT) was done, which showed a 15-centimeter right adnexal cyst with adjacent “whirlpool sign” concerning for right ovarian torsion. Transvaginal pelvic ultrasound (US) revealed a hemorrhagic cyst in the right adnexa, with duplex Doppler identifying arterial and venous flow in both ovaries. Laparoscopic surgery confirmed right ovarian torsion with an attached cystic mass, and a right salpingo-oophorectomy was performed given the mass was suspicious for malignancy. Discussion: Ultrasound is the test of choice for diagnosis of torsion due to its ability to evaluate anatomy and perfusion. When ovarian pathology is on the patient’s right, appendicitis is high in the differential diagnosis, and CT may be obtained first. Here we describe a case where CT first accurately diagnosed ovarian torsion by demonstrating the whirlpool sign, despite an US that showed arterial flow to the ovary. Future studies should determine whether CT alone is sufficient to diagnose or exclude ovarian torsion.

scholarly journals Misdiagnosis of Rectus Abdominis Abscess Owing to Delayed Contrast-Enhanced Computed Tomography

2021 ◽  
Author(s):  
Yuichiro Nagase ◽  
Yukinori Harada
Keyword(s):  
Computed Tomography ◽  
Laboratory Tests ◽  
Rectus Abdominis ◽  
Rectus Abdominis Muscle ◽  
Contrast Enhanced Ct ◽  
Contrast Enhanced ◽  
Enhanced Ct ◽  
The Right ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography

A 77-year-old man, who was on anticoagulation, presented with a painful lump on the right abdominal wall. Laboratory tests showed slight anaemia and elevated inflammatory markers. Abdominal plain computed tomography (CT) revealed a mass in the right rectus abdominis muscle. He was admitted with a diagnosis of primary rectus abdominis haematoma. However, on the next day, the diagnosis was corrected to primary rectus abdominis abscess, following contrast-enhanced CT of the abdomen. This case illustrates the importance of considering primary rectus abdominis abscess in patients with suspected primary rectus abdominis haematoma, and contrast should be used when performing CT.

scholarly journals Dual-Energy Computed Tomography Lung in patients of Pulmonary Tuberculosis

2020 ◽  
Vol 10 ◽  
pp. 39
Author(s):  
Ahmad Umar Khan ◽  
Sachin Khanduri ◽  
Zikra Tarin ◽  
Syed Zain Abbas ◽  
Mushahid Husain ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pulmonary Tuberculosis ◽  
Imaging Techniques ◽  
Ground Glass Opacity ◽  
Signs And Symptoms ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
High Resolution Computed Tomography ◽  
Cross Sectional ◽  
Pulmonary Tb

Objectives: The objective of this study was to characterize findings of high-resolution computed tomography (HRCT) and dual-energy CT (DECT) (80 keV, 140 keV, and mixed) in pulmonary tuberculosis (TB) patients and to compare and correlate HRCT and DECT findings. Material and Methods: This cross-sectional study was conducted on 67 patients of 18–65 years of age who were suspected cases of pulmonary TB with signs and symptoms of cough, fever, hemoptysis, sputum, night sweats, and weight loss with positive sputum AFB examinations/bronchoalveolar lavage. All the patients subjected to HRCT scan and followed with DECT scan. Comparison of various imaging techniques (DECT 80 keV, DECT 140 keV, and DECT mixed) with HRCT was done for detecting lung findings and data so obtained were subjected to statistical analysis. Results: On comparing the various imaging techniques with HRCT for detecting consolidation, tree in bud pattern, cavitary lesions, ground-glass opacity, bronchiectasis, atelectasis, nodules, granuloma, peribronchial thickening, and fibrosis, the maximum agreement of HRCT was found with DECT 80 keV and minimum agreement was found with DECT 140 keV. Conclusion: The study concluded that DECT 80 keV monochromatic reconstructions among 80 keV, mixed, and 140 keV monochromatic reconstructions in lung parenchyma window settings are a faster and better analytical tool for the assessment of findings of pulmonary TB when compared with HRCT.

scholarly journals Splenic Haematoma as a Rare Cause of Pleural Effusion: A Case Report

2021 ◽  
Author(s):  
Kashish Dutta ◽  
Anuj Kumar ◽  
Surabhi Jaggi ◽  
Mandeep Kaur Sodhi ◽  
Deepak Aggarwal
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Pleural Effusion ◽  
Lung Parenchyma ◽  
Malignant Cells ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Upper Abdomen ◽  
Contrast Enhanced Computed Tomography ◽  
Exudative Pleural Effusion

Pleural effusion has various aetiologies, mostly located either in the lung parenchyma or in the pleura. Subphrenic causes, leading to exudative pleural effusion are uncommon. Authors hereby, presented a case of a 50-year-old female with recurrent left sided pleural effusion. The effusion was haemorrhagic, exudative with low Adenosine Deaminase (ADA), and no malignant cells on cytology. Contrast Enhanced Computed Tomography (CECT) thorax and upper abdomen showed an incidental splenic haematoma. With conservative treatment, splenic haematoma and adjoining pleural effusion resolved completely. Thus, this case highlights splenic haematoma as a rare but important cause of pleural effusion.

Dislodgement of a Power-Injectable Peripherally Inserted Central Catheter After Power Injection: A Case Report

2013 ◽  
Vol 18 (1) ◽  
pp. 27-29 ◽  
Author(s):  
Boon Keat Lim ◽  
Babu Suresh Balasubramaniam
Keyword(s):  
Computed Tomography ◽  
Original Position ◽  
Peripherally Inserted Central Catheter ◽  
Central Catheter ◽  
Intravenous Contrast ◽  
Intravenous Contrast Medium ◽  
Power Injection ◽  
Scout View ◽  
The Right ◽  
Enhanced Computed Tomography

A 63-year-old Malay woman had a 6-French dual-lumen power-injectable peripherally inserted central catheter (PICC) inserted and subsequently underwent a contrast-enhanced computed tomography scan with intravenous contrast medium administered via the PICC. After the scan, the tip of the PICC was noted to have displaced from its original position and lodged in 1 of the small branches of the right subclavian vein. This phenomenon was then demonstrated in real time under fluoroscopy during the process of repositioning the PICC tip. Although power-injectable PICCs are designed for use with power injectors, tip displacement can and does happen. A computed tomography scout view of the chest may be necessary after each use of power injectors to confirm that the PICC tip remains in a satisfactory position.

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