Items tagged “oncology”

450 results found
Article

Germ cell tumors (mnemonic)

A mnemonic for the differential diagnosis for germ cell tumors is: SECTE Mnemonic S: seminoma E: embryonal cell carcinoma C: choriocarcinoma T: teratoma E: endodermal sinus tumor (yolk sac tumor)
Case

Cavitatory pulmonary metastases from squamous cell carcinoma of floor of mouth

 Diagnosis almost certain
Dr Maulik S Patel
Published 24 Mar 2010
72% complete
X-ray
Case

Mature mediastinal teratoma (gross pathology)

 Diagnosis not applicable
A.Prof Frank Gaillard
Published 25 Mar 2010
60% complete
Pathology
Article

Lymphoma

Lymphoma is a malignancy arising from lymphocytes or lymphoblasts. Lymphoma can be restricted to the lymphatic system or can arise as extranodal disease. This, along with variable aggressiveness results in a diverse imaging appearance. Epidemiology Lymphoma accounts for ~4% of all cancers 4. T...
Article

Causes of perfusion defects on a VQ scan

There are several causes leading to a perfusion defect on a VQ scan with an acute pulmonary embolus being only one of them: Vascular causes acute pulmonary embolus previous pulmonary embolus (including fat embolism, thromboembolism, air embolism, tumor) vasculitides affecting the pulmonary v...
Article

WHO classification of tumors of hematopoietic and lymphoid tissues

The World Health Organization (WHO) classification of tumors of hematopoietic and lymphoid tissues is the most widely used pathologic classification system for hematolymphoid neoplasms. The current revision, known as the 4th revised edition, was published in 2016, supersedes the 4th edition publ...
Article

Primary mediastinal large B-cell lymphoma

Primary mediastinal large B-cell lymphoma is a distinct entity, recognized in the WHO classification of lymphoma. Epidemiology Primary mediastinal large B-cell lymphoma accounts approximately 5% of large B-cell lymphoma, which is usually disseminated or found in the abdomen. There appears to b...
Case

Gastrointestinal stromal tumor

 Diagnosis certain
Dr Maulik S Patel
Published 27 Mar 2010
79% complete
Ultrasound
Case

Peripheral nerve sheath tumor

 Diagnosis probable
Dr Maulik S Patel
Published 27 Mar 2010
66% complete
Ultrasound
Case

Transitional cell carcinoma of urinary bladder

Transitional cell...
 Diagnosis certain
Dr Maulik S Patel
Published 27 Mar 2010
69% complete
Ultrasound
Case

Submandibular gland lesion - oncocytoma

4

Oncocytoma of ...
 Diagnosis certain
Dr Maulik S Patel
Published 09 Apr 2010
57% complete
Ultrasound
Article

Multiple myeloma

Multiple myeloma is a monoclonal gammopathy and is the most common primary malignant bone neoplasm in adults. It arises from red marrow due to monoclonal proliferation of plasma cells and manifests in a wide range of radiographic abnormalities. Multiple myeloma remains incurable. Terminology F...
Article

Hypopharyngeal carcinoma (staging)

Hypopharyngeal carcinoma staging refers to TNM staging of carcinomas originating in the hypopharynx. This system most commonly applies to squamous cell carcinomas but can also apply to rarer epithelial malignancies in the region. The following article reflects the 8th edition published by the Am...
Article

Optic nerve sheath meningioma

Optic nerve meningiomas are benign tumors arising from the arachnoid cap cells of the optic nerve sheath and represent ~20% of all orbital meningiomas, the majority of which are direct extensions from intracranial meningiomas.  These tumors typically appear as masses within the optic nerve, iso...
Article

Inverted papilloma

Inverted papillomas are a type of Schneiderian papilloma. They are uncommon with distinctive pathological and imaging features. Terminology  The term inverted papilloma is also used to describe a urothelial lesion. For a discussion of that entity, please refer to inverted papilloma of the urin...
Article

Leptomeningeal enhancement

Leptomeningeal enhancement refers to a diffuse or focal gyriform or serpentine enhancement that can be seen in the following conditions: Diffuse meningitis pyogenic meningitis viral meningitis tuberculous meningitis (can also be focal) CNS cryptococcal infection coccidioidal meningitis (c...
Case

Transitional cell carcinoma of the bladder

 Diagnosis almost certain
Dr Natalie Yang
Published 26 May 2010
45% complete
CT
Article

Synonyms

Synonyms, located below references when in edit mode, are used in a number of scenarios.  To view a YouTube screencast tutorial please click here.  What is a synonym? A synonym is essentially a 'redirect' to an article. This enables links created to article A to pass to article B, provided ar...
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

Focal gas collection in right upper quadrant (differential)

Focal gas collection in right upper quadrant on plain radiographs can occur from a number of pathologies. Things to consider are: enterobiliary fistula: common types include cholecystoduodenal fistula and cholecystocolic fistula. It may occur with: gallstone ileus (being most common) 3 perfor...

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