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Radiopaedia

@radiopaedia.org
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Free online collaborative radiology resource. Articles, cases, courses, conference, podcast 🩻 #RadSky #MedSky

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Radiopaedia @radiopaedia.org · 15/07/2026
🤩 @laurengroner.bsky.social is bringing her chest radiology expertise from Miami to #Radiopaedia2026 with a brilliant new lecture on imaging of pleural disease. Clear, practical teaching from an awesome speaker. We can’t wait to share it with you! 📅 16–21 July 2026 radiopaedia.org/courses/radi...
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Radiopaedia @radiopaedia.org · 15/04/2026
Join us for another lecture livestream on our YouTube channel. UTC 1330; Friday 17 April Dr Tabby Kennedy on intracranial masses Join us: www.youtube.com/@RadiologyCh... See you there!
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Radiopaedia @radiopaedia.org · 21/03/2026
🎯 Child with neck deformity since birth ☢️ 3D CT: bilateral elevated scapulae, left omovertebral bar (C6), bifid right first rib ✅ Sprengel deformity 📒 Case courtesy of Hidayatullah Hamidi, radiopaedia.org/cases/187389
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Radiopaedia @radiopaedia.org · 17/03/2026
Join us for the second livestream of the season ahead of Radiopaedia 2026, on our YouTube channel. UTC 18:00 Friday 20 March Dr Bhavna Batohi on breast ultrasound Join us: www.youtube.com/@RadiologyCh... See you there!
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Radiopaedia @radiopaedia.org · 14/03/2026
🎉 February 2026 Case of the Month! ☢️ Hand X-ray: Reticular bone replacement in middle finger phalanges w/ soft tissue swelling ☢️ CT: Infiltrative nasal septal mass w/ bilateral hilar and paratracheal lymphadenopathy ✅ Sarcoidosis 📒 Manish Patel, radiopaedia.org/cases/210319
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Radiopaedia @radiopaedia.org · 03/03/2026
🎧 🎙️ Episode 75 of The Reading Room is out! Craig Hacking joins Wui K Chong and Tim Squire to discuss imaging in space and radiation protection during spaceflight. Plus: a computer mouse controversy, Factorio, and Project Hail Mary. 🎧 radiopaedia.org/podcast
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Radiopaedia @radiopaedia.org · 01/03/2026
🎯 Fall from height. 🩻 X-ray: Perilunate dislocation + scaphoid fracture. Mild volar tilt + subluxation. Radiolunate joint preserved. <10% of wrist injuries. High-energy trauma. Urgent reduction required. 👤 Nicholas Tost radiopaedia.org/cases/195112
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Radiopaedia @radiopaedia.org · 25/02/2026
🎉 January 2026 Case of the Month ☢️ CT & 🧲 MRI: Well-circumscribed left perineal mass in ischiorectal fossa. Heterogeneous enhancement w/ central necrosis and draining vessels to the left CFV. Intermediate ADC. Displaces, no invasion. ✅ Solitary fibrous tumour 📒 Case: radiopaedia.org/cases/207986
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Radiopaedia @radiopaedia.org · 21/02/2026
🚨 Two new courses live! Paeds chest + abdo x-ray with Jeremy Jones & Andrew Murphy. 1+ hr video, 30+ mystery cases, 30 review cases, 30 MCQs. Certificate + AMA credits. Launch price $14 each (HALF PRICE). Included in All-Access Pass. radiopaedia.org/courses/disc...
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Radiopaedia @radiopaedia.org · 18/02/2026
Ahead of our virtual conference Radiopaedia 2026, join us for a brand new season of our Friday Livestreams at UTC 1700 on Friday 20 February, with a lecture by Dr Angela Atinga on the imaging of knee dislocations. Join us at: www.youtube.com/@RadiologyCh... See you there!
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Radiopaedia @radiopaedia.org · 12/02/2026
🧠 Radiopaedia x American Society of Neuroradiology: ASNR 2026 Case of the Day. Submit an adult brain case to feature at the ASNR 64th Annual Meeting, 17 to 20 May 2026. 🏅 Win ASNR26 On-Demand + All-Access. Deadline 1 April 2026 radiopaedia.org/asnr-cod
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Radiopaedia @radiopaedia.org · 07/02/2026
🎉 Winner of 2025 Case of the Year! ☢️ CT: Splenic subcapsular haematoma with haemoperitoneum in a β-hCG positive patient. 🔬 Pathology confirmed ectopic placental tissue in the spleen. 📒 Case courtesy of Lam Van Le, radiopaedia.org/cases/202599
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Radiopaedia @radiopaedia.org · 04/02/2026
🎧 🎙️ Episode 74 of The Reading Room is out! Daniel Gewolb guides Jennifer Gillespie and Francis Deng through skull base MRI scenarios, including neurovascular compression, pulsatile tinnitus, skull base osteomyelitis and CSF leak. Plus: Frank breaks the rules. 🎧 radiopaedia.org/podcast
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Radiopaedia @radiopaedia.org · 30/01/2026
🔥 rPoster submissions now open for Radiopaedia 2026 Submit a radiology education poster using public Radiopaedia cases or your own images. Accepted rPosters are featured at the virtual event, receive DOI and eligible for awards. 🗓️ Abstract deadline: 22 March 🔗 radiopaedia.org/courses/rposter
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Radiopaedia @radiopaedia.org · 02/01/2026
🎧 🎙️ Episode 73 of The Reading Room is out! Sally Ayesa chats with Rahil Kassamali and Warren Clements about careers, fellowships, academia and work-life balance. Plus: awkward anecdotes, a very smelly story, and the “your honour” rule. 🎧 radiopaedia.org/podcast
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Radiopaedia @radiopaedia.org · 01/01/2026
🏆 Last chance to vote for your Case of the Year 2025 & win 12-month Radium Supporter status View all cases and vote 👉 bit.ly/RadiopaediaC...
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Radiopaedia @radiopaedia.org · 31/12/2025
🎉 Dec 2025 COTM. Vote COTY: bit.ly/RadiopaediaC... ☢️ CT & 🧲 MRI: Large mixed-density abdominal mass with vessels tracking to left inguinal region. Absent normal left spermatic cord. Enlarged para-aortic nodes. ✅ Seminoma in undescended testis 📒 Magdi Mahsoub, radiopaedia.org/cases/207190
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Radiopaedia @radiopaedia.org · 30/12/2025
🎉 Nov 2025 COTM. Vote for COTY: bit.ly/RadiopaediaC... 🩻 X-ray: Widening of medial proximal tibial physis 🧲 MRI: Salter-Harris I fracture with entrapped periosteum & adjacent bone bruising ✅ Trapped periosteum in the proximal tibial physis 📒 Mathias Tykgaard Clausen, radiopaedia.org/cases/203397
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Radiopaedia @radiopaedia.org · 29/12/2025
🎉 Oct 2025 Case of the Month. Vote for Case of the Year: bit.ly/RadiopaediaC... 🧲 MRI: Thickening and increased signal of the left greater occipital nerve, consistent with neuritis. ✅ Occipital neuralgia due to herpes zoster 📒 Vu Ke Khoi, radiopaedia.org/cases/202884
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Radiopaedia @radiopaedia.org · 28/12/2025
🎉 Sep 2025 COTM. Vote for COTY: bit.ly/RadiopaediaC... ☢️ CT: Splenic subcapsular haematoma with haemoperitoneum in a β-hCG positive patient. 🔬 Pathology confirmed ectopic placental tissue in the spleen. 📒 Case courtesy of Lam Van Le, radiopaedia.org/cases/202599
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Radiopaedia @radiopaedia.org · 27/12/2025
🎉 Aug 2025 COTM. Vote for COTY: bit.ly/RadiopaediaC... ☢️ CT: Gas and fluid within a thickened epiglottis with adjacent collection and supraglottic oedema. ✅ Acute emphysematous epiglottitis 📒 Case courtesy of Adam Z. Fink, radiopaedia.org/cases/199917
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Radiopaedia @radiopaedia.org · 26/12/2025
🎉 July 2025 COTM. Vote COTY: bit.ly/RadiopaediaC... 🧲 MRI for right hemiparesis following a viral illness shows chronic left basal ganglia infarcts with MCA narrowing. 🧠 Suggestive of inflammatory focal cerebral arteriopathy post viral illness. 📒 Utkarsh Kabra, radiopaedia.org/cases/199197
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Radiopaedia @radiopaedia.org · 25/12/2025
🎄 Holiday wishes from Frank & the Radiopaedia team. A breast ultrasound scar forms a Christmas tree, 25 years after cancer surgery. A reminder of the shared work of radiologists, clinicians, & technologists, & the long-term impact of what we do together. Wishing you a safe & happy holiday season.
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Radiopaedia @radiopaedia.org · 24/12/2025
🎉 June 2025 COTM. Vote COTY bit.ly/RadiopaediaC... 🧲 MRI shows bilateral intra-pelvic undescended testes with a uterus-like blind-ending structure posterior to the bladder. 🧬 Persistent Müllerian duct syndrome in a phenotypic male. 📒 Mahmoud Ibrahim Mekhaimar, radiopaedia.org/cases/197568
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Radiopaedia @radiopaedia.org · 23/12/2025
🎉 May 2025 COTM. Vote COTY, win Radium Supporter Status: bit.ly/RadiopaediaC... ☢️ CT shows a multiloculated cystic right temporal bone lesion with intraosseous, extradural and extracranial components. 🧠 Rare cranial hydatid disease. 📒 Case courtesy of Mohammad Sattouf radiopaedia.org/cases/195027
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Radiopaedia @radiopaedia.org · 22/12/2025
🎉 Apr 2025 COTM. Vote COTY: bit.ly/RadiopaediaC... 🧲 MRI and 🔊 US show diffuse patellar tendon thickening with focal echogenic change. 🔬 Gouty patellar tendinopathy. 📒 Case courtesy of Domenico Nicoletti; radiopaedia.org/cases/194602
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Radiopaedia @radiopaedia.org · 21/12/2025
🎉 March 2025 COTM. Vote COTY and win prizes: bit.ly/RadiopaediaC... 🧲 MRI: bilateral cortical & deep grey matter diffusion restriction, no bleeding, comatose patient ☠️ Acute cyanide poisoning, selectively affecting high oxygen demand brain regions 📒 Tran Dai Nghia, radiopaedia.org/cases/192877
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Radiopaedia @radiopaedia.org · 20/12/2025
🎉 Feb 2025 COTM. Vote for COTY and win a free 12-month Radium Supporter Status: bit.ly/RadiopaediaC... ☢️ CT shows an obstructing left main bronchus lesion with complete left lung collapse. 🔬 Inflammatory myofibroblastic tumour. 📒 Case courtesy of Christin Wei Tong Lim radiopaedia.org/cases/192175
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Radiopaedia @radiopaedia.org · 19/12/2025
🎉 January 2025 COTM. Vote for COTY and win 12 month Radium Supporter Status: bit.ly/RadiopaediaC... 🧲 MRI shows an aggressive pelvic mass involving bladder and uterus. 🔬 CT guided biopsy confirmed pelvic actinomycosis, a key inflammatory mimicker. 📒 Laura Machado, radiopaedia.org/cases/188615
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Radiopaedia @radiopaedia.org · 18/12/2025
🎯 Child with leg length discrepancy 🎯 X-rays show multiple lytic lesions with rings and arcs calcification, right-sided predominance 🎯 Ollier disease is the most common enchondromatosis with unilateral involvement causing limb length discrepancy 👤 Leonardo Lustosa radiopaedia.org/cases/207640
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Radiopaedia @radiopaedia.org · 14/12/2025
🏆 Case of the Year voting is open Vote for your favourite Case of the Month from 2025 🎁 Author wins a 12-month All-Access Pass 🙌 Voters can win 12-month Radium Supporter status Winners announced Jan 2026 Vote 👉 bit.ly/RadiopaediaC...
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Radiopaedia @radiopaedia.org · 10/12/2025
🎯 Mass in the hilum that contacts hilar vessels will obscure them, similar to the silhouette sign. 🎯 Hilum overlay sign: mass anterior or posterior to the hilum does not touch the vessels so they remain visible through it. 👤 @stefantigges.bsky.social, radiopaedia.org/cases/224567
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Radiopaedia @radiopaedia.org · 06/12/2025
🎯 15 yo with abdominal distension and mass. 🎯 CT: Massive splenic enlargement with multiple cystic, partly calcified lesions. 🎯 Splenectomy: 4.8 kg spleen with thin-walled cysts. 🎯 Splenic lymphangioma. 👤 Tan (Vivian) Hooi Hooi radiopaedia.org/cases/202622
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Radiopaedia @radiopaedia.org · 05/12/2025
🎧 🎙️ Episode 72 of The Reading Room is out! Joe Mullineux, Katy Hickman & Ed Godfrey break down PSC, gallbladder disease and pancreatitis, including image-guided interventions. Plus: Victoria Bitter, mosh pits, halo braces, deadly animals and our December supporter drive! 🎧 radiopaedia.org/podcast
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Radiopaedia @radiopaedia.org · 01/12/2025
🎯 4-day-old with distension and no meconium. 🎯 AXR/enema: dilated small bowel (orange), microcolon with reduced calibre large bowel (yellow), normal rectosigmoid ratio. 🎯 Surgery: fibrous cord (green) causing ileal atresia. 👤 Case courtesy of Magdi Mahsoub radiopaedia.org/cases/207445
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Radiopaedia @radiopaedia.org · 27/11/2025
🔥 Radiopaedia’s biggest sale is live. 🎟️ All Access Pass up to 35% off with 400 CME credits. 🧒 Paeds Xray 50% off. 🧠 Stroke Learning Pathway 25% off. 📘 CT Physics 25% off. If you’ve been waiting to dive in, this is the moment. radiopaedia.org/courses/blac...
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Radiopaedia @radiopaedia.org · 26/11/2025
🧠 MRI: Symmetrical T2/FLAIR high signal and diffusion restriction in the caudate (orange) and putamen, plus hippocampi, cerebellar hemispheres (green) and subtle cortical change (yellow). ⚡ Hypoxic ischaemic encephalopathy after cardiac arrest. 👤 Case: Magdi Mahsoub, radiopaedia.org/cases/207109
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Radiopaedia @radiopaedia.org · 25/11/2025
🔥 Radiopaedia’s biggest sale is live. All Access Pass up to 35% off with 400 CME credits. Paeds Xray 50% off. Stroke Learning Pathway 25% off. CT Physics 25% off. If you’ve been waiting to dive in, this is the moment. radiopaedia.org/courses/blac...
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Radiopaedia @radiopaedia.org · 25/11/2025
🎯 CTCA: Enlarged right atrium and ventricle with a wide secundum ASD. Coronaries show multifocal calcification and the aortic root is dilated. 🎯 Secundum ASD is the commonest interatrial septal defect, located at the fossa ovalis. 👤 Craig Hacking, radiopaedia.org/cases/206028
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Radiopaedia @radiopaedia.org · 21/11/2025
🎯 CXR: Rounded opacity partly obscuring the right heart border. 🎯 CT: Fat density mass at the right cardiophrenic angle extending through a right anterior diaphragmatic defect. 🎯 Morgagni hernia. 👤 Craig Hacking, radiopaedia.org/cases/206397
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Radiopaedia @radiopaedia.org · 20/11/2025
❗️Quiz time! What can you see on this CXR? Drop your report into the comments and we'll share the answer tomorrow!
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Radiopaedia @radiopaedia.org · 16/11/2025
🎯 Retrosternal tearing chest pain 🩻 Dense pericardial effusion (yellow), crescentic high density sinotubular junction to arch [mural haematoma] (orange), ascending aortic dissection (green) ▶️ Acute aortic syndrome - emergency aortic root surgery 👤 Case: Craig Hacking radiopaedia.org/cases/206016
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Radiopaedia @radiopaedia.org · 12/11/2025
🎯 Post liver tx; agitation, hypersalivation, dystonia & dysphagia 🧠 T2/FLAIR hyperintensity frontal lobes (orange), hippocampi (green), thalami, caudate (yellow), and pons ⚠️ Rapid deterioration. Rabies encephalitis confirmed on PCR & antibody testing 👤 Sara Alharbi, radiopaedia.org/cases/66201
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Radiopaedia @radiopaedia.org · 09/11/2025
🎯 Painful abdo mass, undescended left testis 🩻 CT/MRI: Large mixed cystic-solid mass w/ enhancing solid parts, serpiginous vessels from left pelvis, absent left cord, enlarged para-aortic nodes 🧠 Histology: Seminoma from undescended testis 👤 Case via Magdi Mahsoub, radiopaedia.org/cases/207190
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Radiopaedia @radiopaedia.org · 06/11/2025
🎧 🎙️ Episode 72 of The Reading Room is out! Michael Nel joins us for a CT physics deep dive; iterative reconstruction, dual energy CT, photon-counting CT & more. Plus: Frank’s edamame story, clear ice chaos & why “gullible” got cancelled. 🎧 radiopaedia.org/podcast
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Radiopaedia @radiopaedia.org · 04/11/2025
🎯 Longstanding diarrhoea, weight loss, and iron deficiency anaemia. CT shows jejunoileal fold reversal with mild ileal dilatation and mesenteric nodes. Biopsy confirmed coeliac disease. Specific sign seen on CT, MRI, or small bowel studies. 👤 Mohammad Taghi Niknejad, radiopaedia.org/cases/201964
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Radiopaedia @radiopaedia.org · 27/10/2025
🩺 Clinical: Painful swelling anteromedial distal thigh with limited knee movement. 🦴 X-ray: Sclerotic lesion with wide transition zone and Codman triangle in distal femur. 🧲 MRI: Soft tissue mass with periosteal reaction. 🧬 Dx: High-grade osteosarcoma. 👤 Lam Van Le, radiopaedia.org/cases/204898
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Radiopaedia @radiopaedia.org · 24/10/2025
🎯 History: Abdominal pain. 🎯 CT: Bilateral rectus sheath haematomas with increased muscle density. No definite bleeding point (no arterial phase). No intra-abdominal extension. 🎯 Usually unilateral, most often spontaneous in patients on anticoagulation. 👤 Ian Bickle, radiopaedia.org/cases/206404
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Radiopaedia @radiopaedia.org · 21/10/2025
🎯 Lowered GCS 🩻 MRI: Bilateral thalamic high T2 signal indicating acute infarcts 🧠 Likely artery of Percheron infarction due to thromboembolism 🔍 Vessel usually not visualised; diagnosis inferred from pattern & exclusion of other causes 👤 Frank Gaillard radiopaedia.org/cases/80587
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Radiopaedia @radiopaedia.org · 19/10/2025
🎧 🎙️ Ep 70 of The Reading Room is out! Andrew is joined by Christine (& a bonus guest) to discuss the imaging investigation of primary hyperparathyroidism. Ultrasound, 4D-CT and nuclear medicine. Plus, Frank reviews a gory MRI scene from the latest Final Destination movie! 🎧 radiopaedia.org/podcast
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