Items tagged “cases”
5,532 results found
Article
Myoepithelial carcinoma of the salivary glands
Myoepithelial carcinomas, also known as malignant myoepitheliomas, are rare malignant salivary gland tumors. Myoepithelial carcinoma makes up <2% of all salivary gland malignancies 1,3.
Epidemiology
Myoepithelial carcinoma affects males and females at an equal rate. The mean age at presentat...
Article
Marinacci anastomosis
Marinacci anastomosis, also known as reverse Martin-Gruber anastomosis, describes a rare interneural communication between the ulnar nerve and the median nerve in the distal forearm.
Gross anatomy
Most commonly, motor fibers from the ulnar nerve cross to join the median nerve in the distal for...
Article
Berrettini anastomosis
Berrettini anastomosis is a common sensory interneural communication between the ulnar nerve and the median nerve in the palmar surface of the hand.
Gross anatomy
The Berrettini anastomosis is a purely sensory anastomosis between the common palmar digital nerves that arise from the median and ...
Article
Orbital blastomycosis
Orbital blastomycosis, less commonly known as Gilchrist disease, is an orbital infection from the fungus Blastomyces dermatidis. Blastomycosis is typically acquired via inhalation of conidia (spores). Blastomycosis is a systemic pyogranulomatous infection.
Epidemiology
Even in endemic areas, b...
Article
Para-articular chondroma
Para-articular chondromas, also known as intracapsular chondromas, are one of the three variants of extraskeletal chondromas, the other two being synovial chondromatosis and soft tissue chondroma. These tumors arise from chondroid metaplasia of the joint capsule 1.
Epidemiology
These tumors ar...
Article
Master knot of Henry intersection syndrome
The master knot of Henry intersection syndrome refers to the symptoms resulting from friction in the crossover area between the flexor hallucis longus (FHL) and the flexor digitorum longus (FDL) tendons 1.
Epidemiology
This syndrome is the most common etiology of plantar mid-foot pain. The kno...
Article
Laryngeal paraganglia
The laryngeal paraganglia are tiny specialized neuroendocrine tissues located within and near the larynx. Their function is uncertain but they may play a role in regulating blood flow and responding to changes in oxygen and carbon dioxide levels.
Gross anatomy
Although nomenclature is variable...
Article
Fetal breathing movements
Fetal breathing movements (FBM) are episodic rhythmic contractions of the diaphragm and other muscles of respiration.
Fetal breathing may be noticed as early as 15 weeks of gestation. At 24 -28 weeks, the fetus breaths about 10-20% of the time, increasing to 30% at 30 weeks of pregnancy 1. Feta...
Article
Anal sphincter injury
Anal sphincter injury is a form of perineal trauma that can involve internal or external anal sphincters and may extend to the anorectal mucosa in severe cases.
This article is focusing on the most common type of anal sphincter injury that is associated with vaginal delivery, and represents thi...
Article
Unified classification system for periprosthetic fractures
The unified classification system (UCS) is used for periprosthetic fractures.
The classification is proposed to standardize the classification of periprosthetic fractures and provide a guide to the management of these fractures regardless of the broken bone or the joint affected 1-4.
The class...
Article
Femur series (pediatric)
The femur series for pediatrics is comprised of an anteroposterior (AP), and lateral radiograph. The series is utilized to assess for abnormalities pertaining to the shaft of the femur (often requested when fringe abnormality is seen on hip or knee radiographs). It is not an effective series to ...
Article
Pediatric femur (AP view)
The anteroposterior femur view for pediatrics is part of a standard series examining the femur in its entirety, including the hip and knee joints.
Indications
This view demonstrates the pediatric femur in its natural anatomical position allowing for assessment of suspected dislocations, fractu...
Article
Pediatric femur (lateral view)
The lateral femur view for pediatrics is part of a standard series examining the femur in its entirety, including the hip and knee joint.
Indications
This view demonstrates the femur in an orthogonal position to the AP view. This allows assessment of suspected dislocations, fractures, localizi...
Article
Rim sign (choledocholithiasis)
The rim sign of choledocholithiasis is a finding seen on contrast-enhanced CT and comprises a faint rim of increased density along the margin of a low-density area of calculus 1.
Article
Baker classification of acetabular erosion in hip hemiarthroplasty
The Baker classification of acetabular erosion in hip hemiarthroplasty is commonly used to grade severity 1-3.
Classification
Acetabular erosion is assessed on frontal radiographs 1:
grade 0: no erosion
grade 1: narrowing of the articular cartilage, no erosion
grade 2: acetabular bone erosi...
Article
Whipple disease (musculoskeletal manifestations)
The musculoskeletal manifestations of Whipple disease are among the most constant and earliest signs of the disease and can mimic rheumatic diseases including rheumatoid arthritis or spondyloarthritis 1-3. Joint symptoms may include migrating polyarthralgia, arthritis, spondylodiscitis, myalgia,...
Article
Post-hydrocephalus corpus callosum damage
Post-hydrocephalus corpus callosum damage is seen both in the setting of, and following treatment for, long-standing hydrocephalus. The exact pathophysiology remains to be fully elucidated but both compression and rapid decompression with resultant changes in morphology have been implicated.
Tw...
Article
Early postoperative intraperitoneal chemotherapy
Early postoperative intraperitoneal chemotherapy (EPIC) is a form of chemotherapy used for the treatment of peritoneal malignancy 1-2. Intraperitoneal chemotherapy is common after cytoreductive surgery for peritoneal malignancy, with the other main method being hyperthermic intraperitoneal chemo...
Article
Dry tap (lumbar puncture)
A dry tap refers to a lumbar puncture where cerebrospinal fluid (CSF) cannot be obtained despite the needle tip being in the thecal sac 1. Dry taps may be associated with needle misplacement or blockage, dehydration, low CSF pressure, severe spinal canal stenosis (including epidural lipomatosis)...
Article
TWIST (time-resolved angiography with interleaved stochastic trajectories)
Time-resolved angiography with interleaved stochastic trajectories (TWIST) is a 3D time-resolved MR angiography (MRA) sequence - being vendor-specific to Siemens.
In comparison to contrast-enhanced MRA techniques that obtain images at a single point in time, time-resolved MRA obtains a series o...
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