scholarly journals Computed Tomography Imaging Findings of Pulmonary Chondroma

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Hexiang Wang ◽  
Pei Nie ◽  
Cheng Dong ◽  
Feng Hou ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Left Lung ◽  
Diagnostic Technique ◽  
Lesion Size ◽  
Ct Images ◽  
Ct Imaging ◽  
Imaging Findings ◽  
Contrast Enhanced Ct ◽  
Pulmonary Chondroma ◽  
The Right

Purpose. To characterize the computed tomography (CT) imaging findings in patients with pulmonary chondroma. Methods. We examined CT imaging findings of eight patients with histopathologically verified pulmonary chondroma. We assessed the location, size, shape, margins, amount of calcification, calcification pattern, and attenuation on precontrast and enhancement CT. Results. All patients exhibited solitary, mildly lobulated pulmonary masses, which were located in the right lung in four cases and the left lung in four cases. The mean lesion size was 3.7 cm (range 0.9–10.7 cm). All eight tumours had a well-defined margin. On plain CT images, seven of the cases (87.5%) showed a mass with varying degrees of calcification, which included strip-like punctate (n=5) and ring (n=2) patterns. One patient with a large lesion (10.7 cm) showed chest wall adhesion. On contrast-enhanced CT images, all lesions demonstrated slight inhomogeneous enhancement ≤14 HU. Conclusion. CT is the reference standard diagnostic technique for locating pulmonary chondroma. In most cases, CT findings show some characteristics that are important in the diagnosis, surgical planning, and follow-up of the tumour.

scholarly journals Application of 3D Computed Tomography Reconstruction Images to Assess the Thickness and Dimensions of the Posterior Palatal Seal Area

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Soeun Lim ◽  
Seoung-Jin Hong ◽  
Joo-Young Ohe ◽  
Janghyun Paek
Keyword(s):  
Computed Tomography ◽  
3D Model ◽  
Three Dimensional ◽  
Ct Images ◽  
Anterior Border ◽  
Lateral Direction ◽  
Mean Dimension ◽  
The Mean ◽  
The Right ◽  
Palatal Mucosa

Few studies have been reported on the scientific measurements of the thickness and dimensions of the posterior palatal seal (PPS) area. The purpose of this study is to measure and analyze the thickness of palatal mucosa by using a three-dimensional (3D) model reconstructed with computed tomography (CT) images and to present objective values by identifying the PPS area. The CT images were reconstructed as a 3D model by separating the maxillary palate mucosa and teeth. Each reconstructed model was analyzed and the thickness was measured at 93 crossing points of each divided plane. The dimension of the PPS area was measured and the right and left dimensions of the PPS area were compared. The thickness of the palatal mucosa was thicker toward the posterior area. The thickness increased in the lateral direction and decreased again. In the PPS area, the mean dimension between the rearmost of anterior border and the most posterior line was 2.19 mm and the mean dimension between the forefront of anterior border and the most posterior line was 5.19 mm in the right side and 5.16 mm in the left side. The mean dimension from the center of the palate to the right most forward point was 6.85 mm, and the left was 7.36 mm. The new measurement method of palatal mucosal thickness is noninvasive, accurate, and easy to store and study, so it can be used effectively in planning and manufacturing the maxillary complete denture in the digital workflows.

A cavernous haemangioma of the thyroid gland

2005 ◽  
Vol 119 (10) ◽  
pp. 828-830 ◽  
Author(s):  
Motohiro Kano ◽  
Kaori Kameyama ◽  
Yasuhiro Hosoda ◽  
Kiminori Sugino ◽  
Koichi Ito
Keyword(s):  
Computed Tomography ◽  
Thyroid Gland ◽  
Soft Tissue Mass ◽  
Cavernous Haemangioma ◽  
Imaging Findings ◽  
Papillary Thyroid ◽  
Tissue Mass ◽  
Surgical Specimen ◽  
Right Lobe ◽  
The Right

Haemangioma of the thyroid gland is extremely rare. We report a case of a cavernous haemangioma of the neck that was located both inside and outside the thyroid gland of a 21-year-old man. Ultrasonography of the neck revealed numerous calcified nodules. Computed tomography (CT) showed a large calcified soft tissue mass in the right lobe of the thyroid. Based on the imaging findings a papillary thyroid carcinoma was suspected, but examination of the surgical specimen revealed a huge cavernous haemangioma containing numerous phleboliths.

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 Churg-Strauss vasculitis in patient who received montelukas

2018 ◽  
Vol 75 (4) ◽  
pp. 428-431 ◽  
Author(s):  
Vojislav Cupurdija ◽  
Ivan Cekerevac ◽  
Marina Petrovic ◽  
Gordana Kostic ◽  
Romana Susa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Left Lung ◽  
Leukotriene Receptor Antagonist ◽  
Sputum Production ◽  
Eosinophilic Granulocytes ◽  
Strauss Syndrome ◽  
Leukotriene Receptor ◽  
High Doses ◽  
The Right ◽  
Churg Strauss

Introduction. Montelukast is a selective leukotriene receptor antagonist. One of side effects of this drug class is the Churg-Strauss syndrome (CSS). There is still no reliable evidence whether the expression of this syndrome could be masked by high doses of corticosteroids and become expressed by termination of corticosteroid use, or whether it could be a consequence of leukotriene receptor antagonists use. Case report. Female patient, aged 49 years, was hospitalized with symptoms of fever, dyspnea, cough and increased sputum production with occasional hemoptysis. She was treated for asthma during the previous year. Leukocyte differential formula registered 44% of eosinophils. IgE value was extremely elevated, with value measured to 580 kU/L and eosinophile cation protein value was 15.1 ?g/L. Computed tomography of the chest described changes in the form of ground glass located in all lobes of the right lung and in the upper lobe of the left lung. Computed tomography of paranasal sinuses described changes that could resemble to polyposis, chronic sinusitis, and possible granulomatosis. Mononeuritis of peroneal nerve of the right leg was proven by electromyographic examination. Bone marrow biopsy indicated hypercellularity with domination of eosinophilic granulocytes (30%). Five out of six criteria were noted in patient?s clinical presentation, after which the diagnosis of CSS was set. The patient began treatment with high doses of corticosteroids while montelukast was discontinued which resulted in disease remission. Conclusion. Although there is no evidence that leukotriene modifiers cause the CSS in all patients with asthma, in case of frequent exacerbations with the appearance of pulmonary infiltrates, eosinophilia and paranasal sinus abnormalities make one think of this form of vasculitis.

scholarly journals Spectrum of computed tomography findings in gall bladder carcinoma patients: a retrospective observational study from tertiary care oncology setup

2020 ◽  
Vol 7 (7) ◽  
pp. 2091
Author(s):  
Palwasha Gul ◽  
Pari Gul ◽  
Omer Altaf ◽  
Talha Yaseen Kaimkhani ◽  
Hira Asghar
Keyword(s):  
Computed Tomography ◽  
Gall Bladder ◽  
Bladder Carcinoma ◽  
Bladder Wall ◽  
Tertiary Care ◽  
Research Centre ◽  
Therapeutic Window ◽  
Imaging Findings ◽  
Gall Bladder Carcinoma ◽  
Contrast Enhanced Ct

Background: Gallbladder carcinoma (CA) is the most common primary biliary carcinoma and fifth most common malignancy of the gastrointestinal tract. Patients are usually asymptomatic early in the course of the disease and as a result, therapeutic window is usually missed. Authors discuss spectrum of imaging findings in CA gall bladder with multidetector computed tomography (CT) as modality of choice.Methods: Retrospective cross-sectional study conducted at Shaukat Khanum memorial hospital and research centre. Data from January 2019 to January 2020 which included 70 patients was collected from HIS. Patients with imaging findings of CA gall bladder were examined who had undergone contrast enhanced CT. Institutional review board approved this study.Results: Out of 70 cases in this study, cholelithiasis was present in 60%. The commonest MDCT finding was mass replacing GB (78.6%), followed by eccentric/diffuse gall bladder wall thickening. Extension to porta hepatis was noted in 25 (35.7%) cases. Antroduodenal involvement was noted in 11 (15.8%), hepatic flexure involvement in 8 (11.4%). Vascular encasement/thrombosis of the portal vein noted in 6 (8.6%). Metastasis at presentation was seen in 16 patients i.e., 22.9%. Majority patients presented with stage III and IV disease.Conclusions: Single-center tertiary care oncology hospital study gives insight about imaging findings of carcinoma gallbladder. Authors conclude that multidetector CT is the diagnostic tool of choice in detection of gall bladder carcinoma, locoregional disease, distant metastasis and hence operability and non-operability of the disease.

Abstract TP333: The Volume of an Acute Intracerebral Hemorrhage May Be Larger Than it Appears on Computed Tomography Scan

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Takahiro Sato
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Intracerebral Hemorrhage ◽  
Ct Imaging ◽  
Low Density ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Acute Intracerebral Hemorrhage ◽  
Ct And Mri

Background and Purpose: Computed tomography (CT) scan is difficult to detect early-onset acute intracerebral hemorrhage (ICH) rich in fresh blood correctly. We identified the presence of a perihematomal low-density lesion on CT imaging, which showed a high-intensity signal on T2-weighted imaging and an iso-intensity signal on fluid-attenuated inversion recovery imaging in magnetic resonance imaging (MRI) (Figure. A~C). It located inside of the hypo-intensity rim at the edge of hematoma on gradient recalled echo T2*-weighted imaging (Figure. D). We named it the “CT wall sign” and investigated the association with imaging findings in acute ICH. Methods: Patients with acute ICH within 24 hours from onset who underwent non-contrast head CT and MRI scan at the same time periods were included. The ICH volumes on CT and MRI (cm 3 ) were measured using a three-dimensional slicer and compared. Subjects were divided according to the presence or absence of the CT wall sign and compared the neuroradiological variables. Statistical analyses were performed to evaluate the association between the CT wall sign and other imaging findings. Results: A total of 146 patients were included and the CT wall sign was observed in 42 (29%) patients. The difference in the ICH volume between MRI and CT were significantly larger in the CT wall sign-positive group than in -negative group (6.0 cm 3 versus 0.40 cm 3 , P <0.001). The presence of CT wall sign was significantly associated with putamen hemorrhage ( P =0.049), large hematoma > 11.36 cm 3 ( P =0.005), and niveau formation in the hematoma ( P <0.001). Conclusions: The presence of the CT wall sign suggests that the volume of an acute ICH may be larger than it appears on CT imaging. Key words: Acute intracerebral hemorrhage, Computed tomography, Magnetic resonance imaging, Perihematomal low-density area.

scholarly journals Combined Volumetric and Density Analyses of Contrast-Enhanced CT Imaging to Assess Drug Therapy Response in Gastroenteropancreatic Neuroendocrine Diffuse Liver Metastasis

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Yi Wang ◽  
Kun Huang ◽  
Jie Chen ◽  
Yanji Luo ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Liver Metastases ◽  
Tumor Size ◽  
Therapy Response ◽  
Inverse Correlation ◽  
Ct Images ◽  
Ct Imaging ◽  
Tumor Segmentation ◽  
Gastroenteropancreatic Neuroendocrine Tumors ◽  
Axial Diameter ◽  
Contrast Enhanced Ct

Objective. We propose a computer-aided method to assess response to drug treatment, using CT imaging-based volumetric and density measures in patients with gastroenteropancreatic neuroendocrine tumors (GEP-NETs) and diffuse liver metastases. Methods. Twenty-five patients with GEP-NETs with diffuse liver metastases were enrolled. Pre- and posttreatment CT examinations were retrospectively analyzed. Total tumor volume (volume) and mean volumetric tumor density (density) were calculated based on tumor segmentation on CT images. The maximum axial diameter (tumor size) for each target tumor was measured on pre- and posttreatment CT images according to Response Evaluation Criteria In Solid Tumors (RECIST). Progression-free survival (PFS) for each patient was measured and recorded. Results. Correlation analysis showed inverse correlation between change of volume and density (Δ(V + D)), change of volume (ΔV), and change of tumor size (ΔS) with PFS (r = −0.653, P=0.001; r = −0.617, P=0.003; r = −0.548, P=0.01, respectively). There was no linear correlation between ΔD and PFS (r = −0.226, P=0.325). Conclusion. The changes of volume and density derived from CT images of all lesions showed a good correlation with PFS and may help assess treatment response.

scholarly journals Adrenal Hemangioma: Findings at Multidetector CT with Short Review of the Literature

2011 ◽  
Vol 2011 ◽  
pp. 1-3 ◽  
Author(s):  
Mohamed Abou El-Ghar ◽  
Huda Refaie ◽  
Ahmed El-Hefnawy ◽  
Tarek El-Diasty
Keyword(s):  
Computed Tomography ◽  
Multidetector Ct ◽  
Short Review ◽  
Ct Imaging ◽  
Imaging Findings ◽  
Review Of The Literature

We present the computed tomography (CT) imaging findings of a 44-year-old male with incidentally discovered right adrenal hemangioma displaying imaging pattern of nonadenomatous pattern, associated with multiple hepatic hemangiomata using 64-slice multidetector scanner with reviewing published CT imaging findings with short review of the literature.

scholarly journals Study on Anatomical Variations in Fissures of Lung by CT Scan

2022 ◽  
Author(s):  
M. Manjunath ◽  
M. Vishnu Sharma ◽  
Kollanur Janso ◽  
Praveen Kumar John ◽  
N. Anupama ◽  
...  
Keyword(s):  
Ct Scan ◽  
Imaging Techniques ◽  
Lung Resection ◽  
Left Lung ◽  
Anatomical Variations ◽  
Cross Sectional Study ◽  
Ct Images ◽  
Cross Sectional ◽  
The Right ◽  
Accessory Fissure

Abstract Introduction Refinements in the modern computed tomography (CT) imaging techniques have led to anatomical variations in the fissures of lung being diagnosed more frequently. So far, majority of the studies conducted are cadaveric. There is paucity of studies in this aspect based on chest CT images. Hence, we undertook this study to find the anatomical variations in the fissures. Prior detection of anatomical abnormalities is important to reduce postoperative complications in lung resection surgeries. Materials and Methods This was a cross-sectional study conducted over a period of 2 years. Data were collected from the patients who underwent CT scan thorax. Patients in whom normal anatomy of lung was distorted and cases where both lungs were not visualized completely were excluded from the study. All the CT images were reviewed by a single radiologist. The presence or absence of the normal and accessory pulmonary fissures, as well as the continuity of each fissure, was recorded by the radiologist. Data were compiled and analyzed. Results The study population consisted of 394 (70.4%) males and 166 (29.6%) females, totaling 560 cases. Fissural variations were detected in 22.9% (n = 128). Also, 17.5% (n = 98) fissural variations were seen in males and 5.4% (n = 30) fissural variations were seen in females. Further, 54.7% (n = 70) of variations were detected in the right lung and 45.3% (n = 58) in the left lung. The most common fissural variation noted was right incomplete oblique fissure with a frequency of 8.4% cases (n = 47). The most common accessory fissure detected was inferior accessory fissure. Total 22 cases were detected in both the lungs, 17 cases in male and 5 in female. Conclusion Anatomical variations in fissures were found to be more in the right lung than the left lung. Accessory fissures were detected in higher incidence on the right side.

Thoracic paravertebral involvement in patients with IgG4-related disease: CT and MR imaging findings

Rheumatology ◽  
2020 ◽  
Vol 59 (12) ◽  
pp. 3878-3885
Author(s):  
Zaizhu Zhang ◽  
Wenmin Guan ◽  
Qiang Lin ◽  
Wei Yu
Keyword(s):  
Mr Imaging ◽  
Steroid Therapy ◽  
Thoracic Vertebrae ◽  
Imaging Findings ◽  
Mr Images ◽  
Related Disease ◽  
Igg4 Related Disease ◽  
Contrast Enhanced Ct ◽  
The Right

Abstract Objectives To retrospectively evaluate CT and magnetic resonance (MR) imaging thoracic paravertebral findings at baseline and follow-up in patients with IgG4-related disease. Methods The study consisted of 36 patients with IgG4-related disease involving thoracic paravertebral regions (32 men and four women; mean age, 58 years; range, 25–78 years). A total of 36 patients underwent CT or MR imaging at baseline; 20 patients underwent follow-up. CT and MR images were reviewed and analysed in consensus by two radiologists for the various features of thoracic paravertebral lesions. Results All lesions were located around two or more thoracic vertebrae, particularly the lower thoracic vertebrae (n = 36). The right side of vertebrae was predominantly affected in all cases (n = 36). Radiologically, IgG4-related thoracic paravertebral lesions were categorized into three types: solitary or multiple saddle-like masses type (32 patients); multiple nodules type (three patients); and invasively irregular mass type (three patients). All the types showed soft-tissue density on CT images, isointense on T1- and T2-weighted images, and homogeneous enhancement with penetration of small arteries in the lesions on contrast-enhanced CT and MR images. Steroid therapy administered to 20 patients dramatically diminished the mean maximum thickness in 18 patients. One patient with T7-12 vertebrae involved improved after steroid therapy. Conclusion IgG4-related paravertebral lesions occur mainly around the right side of the lower thoracic vertebrae and manifest as three major patterns of CT and MR imaging findings. Recognition of these diagnostic features will assist in the diagnosis and treatment of IgG4-related disease.

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