Search results for “Radiology Cyst Simple MRI”

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22 results
Article

Paraovarian cyst

Paraovarian cysts are remnants of the Wolffian duct in the mesosalpinx that do not arise from the ovary. They account for ~15% (range 10-20%) of adnexal masses 3,4. Terminology Paraovarian cysts are sometimes called paratubal cysts or hydatid cysts of Morgagni 14. Epidemiology They typically...
Article

Sonographic values in obstetrics and gynecology

Obstetric and gynecological ultrasound is rampant with numerous cut-off values. Some of these get revised over the years. The following list is a useful aid to refer to and revise. 1 mm rate of increase of a mean sac diameter per day in early pregnancy 2 mm generally accepted value for a thi...
Article

Multilocular cystic renal neoplasm of low malignant potential

Multilocular cystic renal neoplasm of low malignant potential (MCRNLMP) are low-grade adult renal tumors composed entirely of numerous cysts. The entity was previously known as multilocular cystic renal cell carcinoma, which usually had clear cell morphology, but was redefined in the 2016 WHO cl...
Article

Aneurysmal bone cyst

Aneurysmal bone cysts (ABC) are benign expansile osteoclastic giant cell-rich bony neoplasms, composed of numerous blood-filled channels and cystic spaces 1. ABC accounts for the 'A' in the popular mnemonic for lucent bone lesions FEGNOMASHIC. Terminology The terms 'giant cell reparative gran...
Article

Ovarian-Adnexal Reporting and Data System Magnetic Resonance Imaging (O-RADS MRI)

The Ovarian-Adnexal Reporting and Data System Magnetic Resonance Imaging (O-RADS MRI) forms the MRI component of the Ovarian-Adnexal Reporting and Data System (O-RADS). This system aims to ensure that there is a uniform, unambiguous MRI evaluation of ovarian or other adnexal lesions, accurately ...
Article

BSBR breast imaging classification

The British Society of Breast Radiologists (BSBR) publish with the Royal College of Radiologists a standardized classification for breast imaging in the United Kingdom. The first edition in 2009 was based on findings from the RCR Breast Group (RCRBG) 1 with the fourth edition published in Novemb...
Article

Paranasal sinus mucocele

Paranasal sinus mucoceles represent complete opacification of one or more paranasal sinuses by mucus, often associated with bony expansion due to obstruction of the nasal sinus drainage. Clinical presentation Clinical presentation depends on two factors: location and direction of expansion p...
Article

Prostate atrophy

Prostatic atrophy is characterized by reduced cytoplasm prostatic acinar cells and constitutes a benign mimic of prostate cancer not only on imaging but also histologically. Terminology The term 'proliferative inflammatory atrophy (PIA)' is used if it is associated with inflammation. Epidemio...
Article

Central giant cell lesions (granuloma)

Central giant cell lesions (granulomas), also known as giant cell reparative cysts/granulomas, occurs almost exclusively in the mandible, although cases in the skull and maxilla have been reported. Epidemiology It is most frequently seen in young women (F:M 2:1) 5 and typically presents in the...
Article

Lumbar canal stenosis

Lumbar canal stenosis is a general term that refers to the pathological narrowing of the spinal canal, nerve root canals and/or the intervertebral foramina in the lumbar spine 1-4,6,7,9,10. Epidemiology Lumbar canal stenosis is common, especially among individuals over 60 years old, and its pr...
Article

Fibrous dysplasia

Fibrous dysplasia (FD) is a developmental benign medullary fibro-osseous process characterized by the failure to form mature lamellar bone and arrest as woven bone that can be multifocal. It can affect any bone and occur in a monostotic form involving only one bone or a polyostotic form involvin...
Article

MRI of the knee (an approach)

Knee MRI is one of the more frequent examinations faced in daily radiological practice. This approach is an example of how to create a radiological report of an MRI knee with coverage of the most common anatomical sites of possible pathology. Systematic review A systematic review in the MRI of...
Article

Pediatric cystic renal diseases

The pediatric cystic renal diseases are a heterogeneous group of conditions defined by the presence of kidney cysts due to hereditary or non-hereditary causes: isolated simple cyst cystic renal dysplasia multicystic dysplastic kidney (MCDK) obstructive cystic renal dysplasia genetic disorde...
Article

Ciliated hepatic foregut cyst

Ciliated hepatic foregut cysts are a very rare type of hepatic cyst, with non-specific radiological features. They are usually benign, but rare cases of malignant degeneration (to squamous cell carcinoma) have also been reported.  Epidemiology They are more often seen in adults, although a few...
Article

Musculoskeletal curriculum

The musculoskeletal curriculum is one of our curriculum articles and aims to be a collection of articles that represent the core of musculoskeletal knowledge. Definition Topics pertaining to bones, joints, muscles, tendons and ligaments, but excluding the skeletal structures of the head. Anat...
Article

Breast imaging-reporting and data system (BI-RADS)

BI-RADS (Breast Imaging-Reporting and Data System) is a risk assessment and quality assurance tool developed by American College of Radiology that provides a widely accepted lexicon and reporting schema for imaging of the breast. It applies to mammography, ultrasound, and MRI. This article refle...
Article

Ovarian-Adnexal Reporting and Data System Ultrasound (O-RADS US)

The Ovarian-Adnexal Reporting and Data System Ultrasound (O-RADS US) forms the ultrasound component of the Ovarian-Adnexal Reporting and Data System (O-RADS). This system aims to ensure that there are uniform unambiguous sonographic evaluations of ovarian or other adnexal lesions, accurately ass...
Article

Bosniak classification system of renal cystic masses (version 2005)

The Bosniak classification system of renal cystic masses, now known as Bosniak v2005, divides renal cystic masses into five categories based on imaging characteristics on contrast-enhanced CT, and helps predict a risk of malignancy and suggests either follow-up or treatment. An updated classific...
Article

Solitary bone tumor imaging reporting and data system (BTI-RADS)

Solitary bone tumor imaging reporting and data system (BTI-RADS) is a reporting and communication tool designed to stratify benign and malignant bone lesions and to communicate them in a systematic and standardized way 1,2. History and etymology The solitary bone tumor imaging reporting and da...
Article

Bone Reporting and Data System (Bone-RADS)

The Bone Reporting and Data System (Bone-RADS) is an algorithm developed and proposed by the Practice Guidelines and Technical Standards Committee of the Society of Skeletal Radiology for the diagnostic workup of incidentally encountered solitary bone lesions in adults on MRI and/or CT 1. It has...
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