Items tagged “oncology”

476 results found
Article

Assessment of thyroid lesions (general)

Assessment of thyroid lesions is commonly encountered in radiological practice. Thyroid mass hyperplastic / colloid nodule / nodular hyperplasia: 85% adenoma follicular: 5% others: rare carcinoma papillary: 60-80% of carcinomas follicular: 10-20% medullary: 5% anaplastic: 1-2% thyroi...
Article

Tracheal masses

The differential for tracheal masses can be rather wide. For a single mass consider: metastasis  direct invasion from adjacent organ (lung, thryoid,esophagus) distant metastsis ( such as melanoma)  primary neoplasms: squamous cell carcinoma: commonest primary tracheal malignancy 2 ~50 % a...
Article

Typhlitis

Typhlitis, also called caecitis or neutropaenic colitis, is a necrotising inflammatory condition which typically involves the caecum and, sometimes, can extend into the ascending colon or terminal ileum. Epidemiology Typhlitis was first described in children with leukaemia and severe neutropae...
Article

Wilms tumour (staging)

Wilms' tumour staging is largely anatomical and relates to the invasion and spread of the tumour. Where there is invasion or metastasises, prognosis is poorer. Wilms tumour, is one of the more common childhood malignancies. stage I confined to kidney complete resection possible stage II loc...
Case

Bull's eye sign (from cerebral metastasis)

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 07 May 2008
50% complete
MRI
Article

Hypothalamic lesions

Hypothalamic lesions are numerous representing some entities that are unique to the hypothalamus, as well as many lesions that can be seen elsewhere within the brain. Additionally, due to its proximity to the optic chiasm, third ventricle and pituitary region, many lesions of these locations can...
Article

Renal osteodystrophy

Renal osteodystrophy (ROD), also known as uraemic osteopathy, is the constellation of musculoskeletal abnormalities that occur in patients with chronic renal failure, due to concurrent and superimposed: osteomalacia (adults) / rickets (children) secondary hyperparathyroidism: abnormal calcium ...
Case

Mucoepidermoid carcinoma: parotid

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 06 Aug 2008
53% complete
CT
Article

Cerebral ring enhancing lesions (mnemonic)

Convenient mnemonics for the causes of cerebral ring enhancing lesions are: MAGIC DR or DR MAGIC DR MAGIC L MAGICAL DR Mnemonics MAGIC DR or DR MAGIC M: metastasis A: abscess G: glioblastoma I: infarct (subacute phase) C: contusion D: demyelinating disease R: radiation necrosis or re...
Article

Pelvic masses in females

Pelvic masses in females carry a broad differential diagnosis: benign adnexal cyst: 34% leiomyoma: 14% pelvic malignancy: 14% dermoid: 13% endometriosis: 10% pelvic inflammatory disease: 8% tubo-ovarian abscess hydrosalpinx pregnancy Extra-gynaecological masses, e.g. colorectal carcino...
Case

Carotid body tumour on angiography

 Diagnosis certain
A.Prof Frank Gaillard
Published 26 Sep 2008
71% complete
DSA (angiography)Annotated image
Article

Unilateral testicular lesions

The differential diagnosis for unilateral testicular lesions is wide-ranging.  Neoplastic Common seminoma (40-50% of tumours) non seminomatous germ cell tumours: testicular teratoma testicular epidermoid (teratoma with ectodermal elements only) testicular choriocarcinoma testicular embry...
Article

Bilateral testicular lesions

Bilateral testicular lesions have a relatively limited differential diagnosis.  Differential diagnosis Neoplastic  lymphoblastic leukemia (acute or chronic) lymphoma (non-Hodgkin's) primary testicular lymphoma is rare but the testes are often the site of lymphoma/leukemia recurrence due to ...
Case

Orbital pseudotumour

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 08 Oct 2008
53% complete
CT
Case

Metastatic malignant melanoma

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 09 Oct 2008
83% complete
CT
Article

Pedunculated intratracheal mass

A pedunculated intratracheal mass has a variety of differential diagnoses: benign tumour, e.g. hamartoma, chrondroma, lipoma haemangioma inspissated mucus metastasis to tracheal mucosa, e.g. renal cell carcinoma, melanoma polyp, e.g. inflammatory, antrochoanal papilloma post-intubation tr...
Article

Cerebral radiation necrosis

Cerebral radiation necrosis refers to necrotic degradation of brain tissue following intracranial or regional radiation either delivered for the treatment of intracranial pathology (e.g. astrocytoma, cerebral arteriovenous malformation) or as a result of irradiation of head and neck tumours (e.g...
Case

Skull metastasis and pachymeningeal extension

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 28 Oct 2008
53% complete
CT
Case

Potts puffy tumour

 Diagnosis almost certain
A.Prof Frank Gaillard
Published 31 Oct 2008
48% complete
CT
Article

CT angiogram sign (lungs)

The CT angiogram sign refers to vessels appearing prominent during a contrast enhanced CT as they traverse an airless low attenuation portion of consolidated lung. Although initially thought to be specific for bronchoalveolar carcinoma, it has now been recognised as a generic appearance provided...

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