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Nov 16, 2024 | 
radiopaedia.org | Behrang Amini |Tariq Walizai
Dysphagia lusoria is an impairment of swallowing due to compression from an aberrant right subclavian artery (arteria lusoria). Most patients with aberrant right subclavian arteries do not have symptoms. Some present with mild dysphagia, while a small minority have a severe cough during swallowing that leads to a disturbed swallow and severe nutritional problems.
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Nov 10, 2024 | 
radiopaedia.org | Behrang Amini |Andrew Murphy
A sentinel loop is a short segment of adynamic ileus close to an intra-abdominal inflammatory process. It is usually identified on abdominal radiography 4 and CT 3. The sentinel loop sign may aid in localizing the source of inflammation. For example, a sentinel loop in the upper abdomen may indicate pancreatitis or cholecystitis, whilst one in the right lower quadrant may be due to appendicitis 2 or renal infarction 5.
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Sep 16, 2024 | 
digitalcommons.library.tmc.edu | Prapassorn Thirasastr |Heather Lin |Behrang Amini |Wei-Lien Wang
OBJECTIVE: Well-differentiated (WDLPS) and dedifferentiated liposarcoma (DDLPS) account for the majority of liposarcomas. Although gemcitabine-docetaxel is used as second-line treatment in soft tissue sarcomas, its efficacy in WDLPS/DDLPS is not established. This study retrospectively analyzed the efficacy of gemcitabine regimens in WDLPS/DDLPS.
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Aug 12, 2024 | 
digitalcommons.library.tmc.edu | Andrew Bishop |Behrang Amini |Heather Lin |Shaan Raza
AbstractThe aim of this study is to evaluate the outcomes and tolerance of immune checkpoint inhibitors (ICIs) for patients with recurrent chordoma. We reviewed the records of 17 patients with recurrent chordomas who received ICIs for progressing disease as part of their treatment between 2016 and 2020. Response was assessed using response evaluation criteria in solid tumors 1.1 criteria.
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May 12, 2024 | 
radiopaedia.org | Behrang Amini |Arlene Campos
Bochdalek hernias , also known as pleuroperitoneal hernias, (alternative plural: herniae) are the commonest type of congenital diaphragmatic hernia. They occur posteriorly and are due to a defect in the posterior attachment of the diaphragm when there is a failure of pleuroperitoneal membrane closure in utero. Retroperitoneal structures may prolapse through the defect, e.g. retroperitoneal fat or left kidney.
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May 9, 2024 | 
radiopaedia.org | Behrang Amini |Arlene Campos
The idiopathic interstitial pneumonias (IIPs) are diffuse interstitial lung diseases of unknown cause. They are characterized by cellular infiltration of the interstitial compartment of the lung with varying degrees of inflammation and fibrosis. ClassificationOver the years many attempts have been made to reach a consensus on classification of the idiopathic interstitial pneumonias (IIPs).
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May 6, 2024 | 
radiopaedia.org | Behrang Amini |Arlene Campos
Schmorl nodes, also known as intravertebral disc herniations,refer to protrusions of the cartilage of the intervertebral disc through the vertebral body endplate and into the adjacent vertebra. The protrusions may contact the marrow of the vertebra, leading to inflammation. Quiescent Schmorl nodes are extremely common found in around 75% of autopsies, at all ages, more frequently in males 9.
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May 1, 2024 | 
radiopaedia.org | Behrang Amini |Patrick O'Shea
In musculoskeletal radiology, the penumbra sign represents a rim of vascularized granulation tissue surrounding a bone abscess cavity, with a higher T1 signal intensity than the cavity itself 1. Presence of the penumbra sign can help distinguish acute osteomyelitis from other malignant and benign bone lesions. The penumbra is isointense to muscle on T1, enhances on contrast administration, and is hypointense on T2. The penumbra is the same as the inner ring described by Marti-Bonmati 2.
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Apr 25, 2024 | 
radiopaedia.org | Behrang Amini |Andrew Murphy
Osteoid is a protein mixture secreted by osteoblasts that forms the organic matrix of bone. Bone is formed when osteoid mineralizes. Osteoid is important in several disease processes:failure of osteoid to mineralize leads to osteomalacia in adults and rickets in children. focal accumulations of osteoid can lead to Milkman's pseudofractures, which are suggestive of osteomalacia.
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Apr 3, 2024 | 
radiopaedia.org | Behrang Amini |Rohit Sharma
acute GGO lasts only days or weeks. In this setting, imaging is less important as the most common causes of acute GGO (infection, edema, hemorrhage, ARDS, and non-fibrotic hypersensitivity pneumonitis) may have overlapping and non-specific features. The clinical features are the key to diagnosischronic GGO may remain relatively unchanged for many weeks and even years.
