88 results
Article
Simple bone cyst
Simple bone cysts (SBC) are common benign non-neoplastic lucent bone lesions seen mainly in childhood and typically remain asymptomatic.
Simple bone cysts account for the "S" in the popular mnemonic for lucent bone lesions FEGNOMASHIC.
Terminology
The term unicameral bone cysts (UBC) is no lo...
Case
Simple bone cyst with pathologic fracture
Published
02 Nov 2013
100% complete
X-ray
CT
Case
Simple bone cyst and pathological fracture
Published
21 Oct 2021
88% complete
X-ray
Case
Simple bone cyst - tibia
Published
11 Mar 2021
80% complete
MRI
Case
Simple bone cyst of the proximal humerus
Published
26 May 2024
80% complete
MRI
Case
Calcaneal simple bone cyst
Published
08 Oct 2011
74% complete
MRI
Case
Simple bone cyst - humerus
Published
28 Oct 2023
75% complete
X-ray
Case
Simple bone cyst with pathological fracture
Published
21 Nov 2012
75% complete
X-ray
Case
Pathological fracture of humerus - simple bone cyst
Published
13 Sep 2021
75% complete
X-ray
Case
Calcaneal simple bone cyst
Published
25 Dec 2017
59% complete
MRI
Case
Simple bone cyst
Published
30 Aug 2011
49% complete
CT
Article
WHO classification of odontogenic and maxillofacial bone tumours
The WHO classification of odontogenic and maxillofacial bone tumours, last published in 2017, is a subset of the WHO classification of head and neck tumours (4th edition), which lays out a histological classification system for neoplasms and other tumours related to the odontogenic apparatus.
C...
Article
WHO classification of head and neck tumours
The World Health Organizatiοn (WHO) classification of head and neck tumours is the most widely used pathologic classification system for such disorders. The current revision, part of the 4th edition of the WHO series, was published in 2017 and is reflected in the article below 1.
Classification...
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...
Article
Metaphyseal lesions
The differential diagnosis for metaphyseal lesions includes:
osteomyelitis
metastases
non-ossifying fibroma
enchondroma
aneurysmal bone cyst
simple bone cyst
chondromyxoid fibroma
chondrosarcoma
cortical desmoid
giant cell tumour
desmoplastic fibroma
intraosseous lipoma
osteosarcoma...
Article
Skeletal lesions with giant cells
There are a number of skeletal lesions with giant cells on histology, which may occasionally lead to mischaracterization of the lesion.
Below is a list of lesions with giant cells as an important histological feature, to aid in differential diagnosis if the histological diagnosis of a lesion do...
Article
Odontogenic keratocyst
Odontogenic keratocysts (OKC), previously known as keratocystic odontogenic tumours (KCOT or KOT), are rare benign cystic lesions involving the mandible or maxilla and are believed to arise from dental lamina. Whether these lesions are developmental or neoplastic is controversial, with the 4th e...
Article
Benign lytic bone lesions
Benign lytic bone lesions encompass a wide variety of entities. A useful starting point is the FEGNOMASHIC mnemonic.
The differential diagnosis for benign lytic bone lesions includes:
fibrous dysplasia (FD)
eosinophilic granuloma (EG)
enchondroma
non-ossifying fibroma (NOF)
osteoblastoma
...
Article
Fallen fragment sign
The fallen fragment sign refers to the presence of a bone fracture fragment resting dependently in a cystic bone lesion. This finding was once thought to be pathognomonic for a simple (unicameral) bone cyst following a pathological fracture, although it has occasionally been reported with other ...
Article
Lucent/lytic bone lesion - differential diagnosis (mnemonic)
Mnemonics for the differential diagnosis of lucent/lytic bone lesions include:
FEGNOMASHIC
FOG MACHINES
They are anagrams of each other and therefore include the same components. They are by no means exhaustive lists, but are a good start for remembering a differential for a lucent/lytic bone...
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