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您的检索式：作者名="Ashu S Bhalla"
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| 1 | CT patterns of nodal disease in pediatric chest tuberculosis显示文摘AIM:To highlight various patterns of nodal involvement and post treatment changes in pediatric chest tuberculosis based on contrast enhanced computed tomography(CECT) scans of chest.METHODS:This was a retrospective study consisting of 91 patients aged less than 17 years,who attended Paediatrics OPD of All India Institute of Medical Sciences with clinically diagnosed tuberculosis or with chest radiographs suggestive of chest tuberculosis.These patients had an initial chest radiograph as well as CECT of the chest and follow up imaging after 6 mo,and in some cases 9 mo,of completion of anti-tubercular treatment(ATT).CECT of these patients was reviewed for the location and extent of nodal involvement along with determination of site,size,enhancement pattern and calcification.RESULTS:Enlargement of mediastinal or hilar lymph nodes was found in 88/91 patients(96.7%),with the most common locations being paratracheal(84.1%),and subcarinal(76.1%).The most common pattern of enhancement was found to be inhomogenous.The nodes were conglomerate in 56.8% and discrete in 43.2%.In addition,perinodal fat was obscured in 84.1% of patients.In the post-treatment scan,there was 87.4% reduction in the size of the nodes.All nodes post-treatment were discrete and homogenous with perinodal fat present.Calcification was found both pre-and post-treatment,but there was an increase in incidence after treatment(41.7%).There was hence a reduction in size,change in enhancement pattern,and appearance of perinodal fat with treatment.CONCLUSION:Tubercular nodes have varied appearance and enhancement pattern.Conglomeration and obscuration of perinodal fat suggest activity.In residual nodes decision to continue ATT requires clinical correlation. | Amar Mukund Rashmi Khurana Ashu S Bhalla Arun K Gupta Sushil K Kabra | 2011 | World Journal of Radiology2011，3，1： | 5 |
| 2 | Benign neck masses showing restricted diffusion: Is there a histological basis for discordant behavior?显示文摘Diffusion weighted imaging(DWI) evolved as a complementary tool to morphologic imaging by offering additional functional information about lesions. Although the technique utilizes movement of water molecules to characterize biological tissues in terms of their cellularity, there are other factors related to the histological constitution of lesions which can have a significant bearing on DWI. Benign lesions with atypical histology including presence of lymphoid stroma, inherently increased cellularity or abundant extracellular collagen can impede movement of water molecules similar to malignant tissues and thereby, show restricted diffusion. Knowledge of these atypical entities while interpreting DWI in clinical practice can avoid potential misdiagnosis. This review aims to present an imaging spectrum of such benign neck masses which, owing to their distinct histology, can show discordant behavior on DWI. | Abanti Das Ashu S Bhalla Raju Sharma Atin Kumar Meher Sharma Shivanand Gamanagatti Alok Thakar Suresh Sharma | 2016 | World Journal of Radiology2016，8，2： | 1 |
| 3 | Imaging of the pediatric thymus:Clinicoradiologic approach显示文摘The thymus is a lymphatic organ that undergoes dynamic changes with age and disease.It is important to be familiar with these physiological changes in the thymus gland to be able to identify pathology and make an accurate diagnosis.The thymus may be involved in multisystem disorders or show focal isolated lesions.The aim of this article is to review the radiological anatomy of the thymus,normal variants,and pathology including hyperplasia and benign/malignant lesions involving the thymus gland in the pediatric age group.We also propose an algorithmic approach for imaging evaluation of a suspected thymic mass on the basis of morphologic features. | Smita Manchanda Ashu S Bhalla Manisha Jana Arun K Gupta | 2017 | World Journal of Clinical Pediatrics2017，6，1： | 0 |
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