Findings are characteristic of an osteoid osteoma, confirmed with histology.
This case demonstrates the need to keep a careful eye on prevertebral tissues on plain film and also the difficulty in determining which space the infection lies in. An important differential ...
Bilateral duplex kidneys. Bifid ureter on the left side. Hence a partial duplication.The most medial ureter on the right, is continuous with the upper pole moiety collecting syste, ...
Hidden diagnosis
Images courtesy of Dr Simon Meagher
Hidden diagnosis
Perirenal haemorrhage without a history of trauma complicating an angiomyolipoma is known as Wunderlich syndrome. If perirenal haemorrhage is encountered on ultrasound, a thorough workup should be ...
Hidden diagnosis
14 month old boy with Crouzon syndrome.
Continuous lesion without skip,or carpeting of the whole colon is classic for ulcerative colitis.Mucosal inflammation causes a granular appearance to the surface of the bowel. As inflammation ...
The patient had poliomyelitis (polio) infection as a young child.
Neonate with typical features of autosomal recessive type of osteopetrosis.
Elastofibroma dorsi
Syndesmophytes and osteophytes can look very similar on imaging and it is sometimes difficult to differentiate between the two. This illustration highlights the salient difference in aetiology of t...
Hidden diagnosis
Perthes disease (also referred to as Legg-Calvé-Perthes disease) refers to idiopathic osteonecrosis of the femoral epiphysis seen in children.
Erosions of the distal clavicle can be seen with multiple conditions such as rheumatoid arthritis, hyperparathyroidism, and post-trauma. Rheumatoid arthritis can present with changes to both or a s...
Charcot joint involving foot a progressive degenerative / destructive joint disorder in patients with abnormal pain sensation and proprioception.Mnemonic - 6 Ds of charcot joint...
Spectrum of uterine anatomical abnormalities.
NF1, also known as von Recklinghausen disease or peripheral neurofibromatosis, is characterized by a progressive disease that affects the growth of neural tissues and has varied manifestations...
Case illustrating typical features of a mechanical small bowel obstruction due to right inguinal incarceration.
Hidden diagnosis
Diagram depicting diffuse tenosynovial giant cell tumour of the knee.
Features are consistent with Osgood-Schlatter disease.
Hidden diagnosis
Hidden diagnosis
Neutropaenic colitis or typhlitis typically involves the caecum as in this case. Intramural hypodensity represents either oedema or haemorrhage.
Path proven atypical teratoid / rhabdoid tumour (ATRT).
Coronary arterial dominance is defined by the vessel which gives rise to the posterior descending artery (PDA).Right coronary dominance (80-85%) - PDA is supplied by the right coronary artery ...
This case illustrates the features of nutcracker syndrome, also known as renal vein entrapment syndrome, and an uncommon cause of secondary hypertension. It should not be confused with ...
Hidden diagnosis
The patient went on to have a core biopsy. HistologyMICROSCOPIC DESCRIPTION: Sections show multiple cores of tissue which shows a diffuse population of large atypical cells. The cell...
See article: Bosniak renal cyst classification
Despite very suggestive radiological features, muscle and renal biopsies were negative. The patient was treated presumptively and has had a number of recurrent episodes. Long term follow-up un...
This case shows abnormal fracture healing in the tibia and fibula with pseudoarticulation formed in the tibial aspect. There is prominent callus formation ("hypertrophic") around the ...
Transmantle sign is only rarely seen in Type I focal cortical dysplasia, and usually implies a Taylor type (Type II) malformation.
Images of the peritoneal cavity from Gray's anatomy (now out of copyright) and from Wikipedia (WikiCommons).
Hidden diagnosis
Hidden diagnosis
The stiletto was manually removed under general anaesthesia (see reference below for description).Repeat CT impression:Interval removal of foreign body from the left orbit with orbital fractures as...
This patient had a history of mitral stenosis complicated by pulmonary arterial hypertension. The findings are typical for a "mitral heart". Case with thanks to Professor Oliver Hennessy.
This case demonstrates features consistent with a non-ossifying fibroma, confirmed histologically, and high-lights the benefits in multi-modality imaging in assessing such lesions.
Hidden diagnosis
Neutropaenic colitis or typhlitis typically involves the caecum as in this case. Intramural hypodensity represents either oedema or haemorrhage.
License: All image files licensed under Creative Commons BY 3.0Author: OpenStax College, cnx.orgOriginal Files: 1Images adapted for square crop by Dr Craig Hacking.
Hidden diagnosis
This case demonstrates fairly typical distribution of ischaemic changes in a patient with Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL). Note ...
