Elbow Ossification Centers Mnemonic – CRITOE
This is a commonly used mnemonic to recall the elbow ossification centers (CRITOE 1/3/5/7/9/11): Capitellum – 1 year Radial head – 3 years Internal (medial) epicondyle – 5 years Trochlea – 7 years Olecranon – 9 years External (Lateral) epicondyle – 11 years NOTE: always remember when using this mnemonic that the order of appearance […]
Lytic Bone Lesion Mnemonic – FEGNOMASHIC
This is a commonly used mnemonic to recall the differential diagnosis of lytic bone lesions: F – fibrous dysplasia, fibrous cortical defect E – enchondroma (of the tibia here or of a phalanx here), eosinophilic granuloma G – giant cell tumor N – non-ossifying fibroma O – osteoblastoma M – metastases, myeloma A – aneurysmal […]
Ring Enhancing Intracranial Mass Mnemonic – MAGIC DR
This is a commonly used mnemonic to recall the differential diagnosis for ring enhancing intracranial masses: M – Metastases A – Abscess G – Glioblastoma Multiforme I – Infarct (subacute) C – Contusion D – Demyelinating disease (such as tumefactive multiple sclerosis) R – Radiation Necrosis and Resolving hematoma
Periosteal Reaction in Children Mnemonic – PERIOSTEAL SOCKS
This is a commonly used mnemonic to recall the differential diagnosis for periosteal reactions in children: P – physiologic, prostaglandin therapy E – eosinophilic granuloma R – rickets I – infantile cortical hyperostosis O – osteomyelitis S – scurvy T – trauma E – Ewing Sarcoma A – hypervitaminosis A L – leukemia S – […]
Unknown Case #18 – Pediatric Scrotal Ultrasound
History: 14 year old boy with lump in scrotum. What is your diagnosis for this pediatric patient with a lump in his left scrotum? Comment and share below!
Unknown Case # 17 – Pediatric Hand Radiograph
History: 15 year old boy with hand pain. What is your differential diagnosis for this appearance? Comment and share below!
Solution to Unknown Case #16 – Solitary (Unicameral) Bone Cyst
History: Adolescent Male with knee pain. This is a case of a solitary or unicameral bone cyst. A solitary bone cyst (also called a juvenile bone cyst, unicameral bone cyst, essential bone cyst, or simple bone cyst) is a benign lytic bone lesion that is fluid filled. The most common location that solitary bone cysts […]
256 Shades of Gray – Explanation of Grayscale
What is grayscale? Grayscale is essentially the underlying basis of all images a radiologist reviews on a PACS (picture archiving and communication system) workstation. Each pixel on a digital image has one inherent value on the grayscale, varying from no intensity (black) to the highest intensity (white). Each pixel is stored in binary code and […]
Unknown Case # 16 – Pediatric Tibial Lytic Lesion
History: Adolescent male with knee pain. What is your differential diagnosis for this adolescent patient with left knee pain? Comment and share below!
Depressed Skull Fracture in an Infant – Non-accidental Trauma versus Accidental Trauma
History: Infant status post fall from 4 feet. This is the appearance of a depressed skull fracture in an infant. In the setting of skull fractures in an infant, one always has to rule out the presence of non-accidental trauma (NAT), which is medical-speak for child abuse. There are multiple characteristics of skull fractures which […]