6 results on '"Khan, Ali Nawaz"'
Search Results
2. The calcified lung nodule: What does it mean?
- Author
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Khan, Ali Nawaz, Al-Jahdali, Hamdan H., Allen, Carolyn M., Irion, Klaus L., Al Ghanem, Sarah, and Koteyar, Shyam Sunder
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LUNG tumors , *TUMOR diagnosis , *DIAGNOSTIC imaging , *PRECANCEROUS conditions , *CALCIFICATION , *GRANULOMA , *HAMARTOMA , *CARCINOID - Abstract
The aim of this review is to present a pictorial essay emphasizing the various patterns of calcification in pulmonary nodules (PN) to aid diagnosis and to discuss the differential diagnosis and the pathogenesis where it is known. The imaging evaluation of PN is based on clinical history, size, distribution and the gross appearance of the nodule as well as feasibility of obtaining a tissue diagnosis. Imaging is instrumental in the management of PN and one should strive not only to identify small malignant tumors with high survival rates but to spare patients with benign PN from undergoing unnecessary surgery. The review emphasizes how to achieve these goals. One of the most reliable imaging features of a benign lesion is a benign pattern of calcification and periodic follow-up with computed tomography showing no growth for 2 years. Calcification in PN is generally considered as a pointer toward a possible benign disease. However, as we show here, calcification in PN as a criterion to determine benign nature is fallacious and can be misleading. The differential considerations of a calcified lesion include calcified granuloma, hamartoma, carcinoid, osteosarcoma, chondrosarcoma and lung metastases or a primary bronchogenic carcinoma among others. We describe and illustrate different patterns of calcification as seen in PN on imaging. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
3. Reading chest radiographs in the critically ill (Part I): Normal chest radiographic appearance, instrumentation and complications from instrumentation.
- Author
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Khan, Ali Nawaz, Al-Jahdali, Hamdan, Al-Ghanem, Sarah, and Gouda, Alaa
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CHEST X rays , *CARDIOPULMONARY system , *DISEASES , *PNEUMOTHORAX , *PNEUMOMEDIASTINUM , *PLEURAL effusions , *MEDICAL radiography positioning , *MEDICAL radiography equipment - Abstract
The article offers guidelines for interpretation of chest radiographs of the critically ill patients in intensive care units (ICUs). Particular focus is given to cardiopulmonary disorders diagnosed through chest radiographs. The normal position of monitoring devices and other line placements, including the endotracheal tube, nasogastric tube and pulmonary capillary wedge pressure monitors, are described. The definitions and characterizations of cardiopulmonary disorders including pneumothorax, pneumomediastinum and pleural effusions are provided.
- Published
- 2009
- Full Text
- View/download PDF
4. Pictorial essay of radiological features of benign intrathoracic masses.
- Author
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Suut, Syahminan, Al-Ani, Zeid, Allen, Carolyn, Rajiah, Prabhakar, Durr-e-Sabih, AL-Harbi, Abdullah, AL-Jahdali, Hamdan, and Khan, Ali Nawaz
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MAGNETIC resonance imaging evaluation , *COMPUTED tomography , *ATELECTASIS , *BRONCHIAL diseases , *CYSTS (Pathology) , *DIFFERENTIAL diagnosis , *ECHINOCOCCOSIS , *HEALTH care teams , *MEDIASTINUM diseases , *PLEURA diseases , *PLEURAL effusions , *RHEUMATOID arthritis , *SARCOIDOSIS , *NERVE tissue , *GRANULOMATOSIS with polyangiitis , *HAMARTOMA , *LIPOMA , *DIAGNOSIS , *TUMORS ,CHEST tumors - Abstract
With increased exposure of patients to routine imaging, incidental benign intrathoracic masses are frequently recognized. Most have classical imaging features, which are pathognomonic for their benignity. The aim of this pictorial review is to educate the reader of radiological features of several types of intrathoracic masses. The masses are categorized based on their location/origin and are grouped into parenchymal, pleural, mediastinal, or bronchial. Thoracic wall masses that invade the thorax such as neurofibromas and lipomas are included as they may mimic intrathoracic masses. All examples are illustrated and include pulmonary hamartoma, pleural fi broma, sarcoidosis, bronchial carcinoid, and bronchoceles together with a variety of mediastinal cysts on plain radiographs, computed tomography (CT) and magnetic resonance imaging (MRI). Sometimes a multimodality approach would be needed to confi rm the diagnosis in atypical cases. The study would include the incorporation of radionuclide studies and relevant discussion in a multidisciplinary setting. [ABSTRACT FROM AUTHOR]
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- 2015
- Full Text
- View/download PDF
5. Pictorial review of intrathoracic manifestations of progressive systemic sclerosis.
- Author
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AL-Jahdali, Hamdan, Rajiah, Prabhakar, Allen, Carolyn, Koteyar, Shyam Sunder, and Khan, Ali Nawaz
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CHEST disease diagnosis , *HEMORRHAGE diagnosis , *INFECTION prevention , *MEDIASTINUM diseases , *CARDIAC tamponade , *CREST syndrome , *CONNECTIVE tissue diseases , *DIAGNOSTIC imaging , *LUNG diseases , *LUNG tumors , *LYMPH nodes , *PLEURAL effusions , *PULMONARY function tests , *SYSTEMIC scleroderma , *TOMOGRAPHY , *SYMPTOMS , *DIAGNOSIS ,PLEURA disease diagnosis - Abstract
Intra-thoracic manifestations of progressive systemic sclerosis (PSS) are not well known particularly the imaging features, which forms the basis of accurate and timely diagnosis. The aim of this study is to familiarize the physicians and radiologists with these features. The diagnosis can remain elusive because of the non-specifi c nature of symptoms which mimic many common conditions. Thus, the diagnosis of PSS can be missed leading to continuous morbidity if the correct imaging is not pursued. The authors examined the records of rheumatology patient referrals of over a 5 year period. A hundred and seventy patients with systemic sclerosis and mixed connective tissue disorders were chosen for detailed study of the imaging available, which form the basis of this review. The images included conventional chest radiographs, digital radiographs computed radiography (CT) and high resolution computed tomography (HRCT). Where applicable computed pulmonary angiography (CTPA) and radionuclide scans were also interrogated. [ABSTRACT FROM AUTHOR]
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- 2014
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6. Imaging lung manifestations of HIV/AIDS.
- Author
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Allen, Carolyn M., AL-Jahdali, Hamdan H., Irion, Klaus L., Ghanem, Sarah Al, Gouda, Alaa, and Khan, Ali Nawaz
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HIV , *AIDS , *HIV-positive persons , *LUNG diseases , *MORTALITY , *DISEASE complications - Abstract
Advances in our understanding of human immunodeficiency virus (HIV) infection have led to improved care and incremental increases in survival. However, the pulmonary manifestations of HIV/acquired immunodeficiency syndrome (AIDS) remain a major cause of morbidity and mortality. Respiratory complaints are not infrequent in patients who are HIV positive. The great majority of lung complications of HIV/AIDS are of infectious etiology but neoplasm, interstitial pneumonias, Kaposi sarcoma and lymphomas add significantly to patient morbidity and mortality. Imaging plays a vital role in the diagnosis and management of lung of complications associated with HIV. Accurate diagnosis is based on an understanding of the pathogenesis of the processes involved and their imaging findings. Imaging also plays an important role in selection of the most appropriate site for tissue sampling, staging of disease and follow-ups. We present images of lung manifestations of HIV/AIDS, describing the salient features and the differential diagnosis. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
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