Search results for “fibromas”
345 results
Article
Parosteal osteosarcoma
Parosteal osteosarcoma is a subtype of osteosarcoma and arises from the outer layer of the periosteum.
Epidemiology
It is the most common type of juxtacortical or surface osteosarcoma and accounts for ~4% of all osteosarcomas 1-3. It typically presents in early adulthood and middle age with a...
Article
Meigs syndrome
Meigs syndrome is defined as the presence of ascites and pleural effusion in association with a benign, usually solid ovarian tumor, most commonly an ovarian fibroma.
Epidemiology
Most presentations occur in post-menopausal women with a peak incidence at ~70 years old. It is extremely rare in ...
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
Sex cord / stromal ovarian tumors
Sex cord / stromal ovarian tumors are a subtype of ovarian tumors and account for 8-10% of all ovarian tumors. They arise from two groups of cells in the ovary:
stromal cells
primitive sex cords: celomic epithelium
The group of tumors includes
ovarian fibroma-thecoma spectrum
ovarian fibrom...
Article
Cementoblastoma
Cementoblastomas are one of many mandibular lesions. It is a rare tumor of the cementum, with only approximately 100 cases reported. The key to diagnosis, both radiologically and histologically, is an attachment to the tooth root.
Terminology
Cementoblastomas have been previously described in...
Article
Pericardial tumors
There are a number of tumors that can involve the pericardium. They include
primary pericardial tumors
primary pericardial mesothelioma
pericardial sarcoma(s)
pericardial liposarcoma
pericardial fibrosarcoma
pericardial fibroma
primary pericardial lymphoma
pericardial hemangioma
pericar...
Article
Esophageal fibrovascular polyp
Esophageal fibrovascular polyps are benign intraluminal submucosal pedunculated tumors that can grow significantly and cause dysphagia. They usually occur in the upper third of the oesophagus, at the level of the upper esophageal sphincter.
Terminology
They were previously denominated esophag...
Article
Intraosseous schwannoma
Intraosseous schwannomas are a group of rare benign osseous lesions that account for about 0.2% of all primary bone tumors. They are the most common benign peripheral nerves tumor arising from Schwann cells of the neural sheaths, but its intraosseous manifestation is very rare 1.
Epidemiology
...
Article
Tumors of the chest wall
Tumors of the chest wall are varied, some of which are found most often in this region. They can be divided into benign and malignant tumors and into those which arise in the ribcage and those of soft tissue density.
Benign
Benign tumors include 1,3,4:
soft tissue
hemangioma: common
lymphan...
Article
Benign tumors and tumor-like lesions of the gallbladder
The gallbladder and extrahepatic bile ducts play host to a surprisingly large number of benign tumors and tumor-like lesions which may be visible on imaging. In the gallbladder, most of them are detected incidentally, whereas in the bile ducts they are usually found in symptomatic patients (obst...
Article
Fetal tumors
Although rare, a number of tumors may be diagnosed antenatally. These fetal tumors are a diverse and a unique group of conditions, and include:
neuroblastoma: most common tumor overall
teratomas
sacrococcygeal teratoma
head and neck teratoma/epignathus
mediastinal teratoma
intrapericardial...
Article
Breast lump
Breast lumps have different characteristics that allow simplification of differential diagnosis by breaking down the vast list into sections. Consider whether the lump fits into one of these categories.
Spiculated lesion
Spiculation is a feature of neoplasms and all masses that display spicula...
Article
Ovarian fibromatosis
Ovarian fibromatosis refers to a rare benign phenomenon where there is tumor-like ovarian enlargement due to diffuse ovarian fibrosis.
Epidemiology
It may have a predilection towards younger pre-menopausal females (age range around 13-39 years) with a mean age of presentation of 25 years 5.
A...
Article
Diaphyseal lesions (mnemonic)
A mnemonic for a short list of diaphyseal lesions is:
CEMENT
Mnemonic
C: bone cysts
E: enchondroma/Ewing sarcoma
M: bone metastasis
E: eosinophilic granuloma
N: non-ossifying fibroma (NOF)
T: tuberculosis/osteomyelitis
Article
Ovarian fibrosarcoma
Ovarian fibrosarcoma is a malignant mesenchymal fibroblastic tumor of the ovary that has multiple mitotic figures which is the most important factor in histopathological diagnosis (4 or more mitotic figure per 10 high power fields).
Epidemiology
Ovarian fibrosarcoma is a very rare malignant o...
Article
Angiofibroma of soft tissue
Angiofibromas of soft tissue are benign fibroblastic soft tissue neoplasms permeated by a vascular network that might be found in the periarticular and articular areas of the lower extremities that have been included as a separate entity in the WHO classification of soft tissue tumors in 2020.
...
Article
Jaffe-Campanacci syndrome
Jaffe-Campanacci syndrome is characterized by:
multiple non-ossifying fibromas of the long bones and jaw
café au lait spots
intellectual disability
kyphoscoliosis
hypogonadism or cryptorchidism
ocular malformations
cardiovascular malformations
giant cell granuloma of the jaw
axillary an...
Article
Ovarian lesions with T2 hypointensity
A hypointense ovarian lesion on T2 weighted MRI is usually a sign of benignity. The low signal is considered to be due to fibrosis and blood products 1.
Lesions that can give this appearance include 1:
endometrioma
Brenner tumor
ovarian fibroma
ovarian fibrothecoma
ovarian cystadenofibrom...
Article
Paget disease (bone)
Paget disease of the bone is a common, chronic metabolic bone disorder characterized by excessive abnormal bone remodeling. The classically described radiological appearances are expanded bone with a coarsened trabecular pattern. The pelvis, spine, skull, and proximal long bones are most frequen...
Article
Knee radiograph (checklist)
The knee radiograph checklist is just one of the many pathology checklists that can be used when reporting to ensure that you always actively exclude pathology that is commonly missed; this is particularly helpful in the examination setting, e.g. the FRCR 2B rapid-reporting.
Radiograph
Knee ra...
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