@DocNavarrow

Neuroradiologist. MD, PhD, EDiNR Advisory Editorial Committee, @RevistaRADIOLO2 Medical AI trainer

 HGUC, Castellón
Joined August 2022
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Replying to @HarveyOnana
Within the cavernous sinus compartment, but not within the venous lumen. It's normal extravascular adipose tissue located among the neurovascular structures.
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✅Juvenile nasopharyngeal angiofibroma. 💡Look for anterior bowing of the posterior maxillary sinus wall (Holman-Miller sign), pterygopalatine fossa widening, and intratumoral flow voids. Avoid biopsy due to hemorrhage risk. Assess skull base and intracranial extension. doi.org/10.4103/2156-7514.10…

Imaging in the Diagnosis of Juvenile Nasopharyngeal Angiofibroma

Imaging in the Diagnosis of Juvenile Nasopharyngeal Angiofibroma

clinicalimagingscience.org
Doc Navarrow
@DocNavarrowOct 23
👦A 14-year-old boy presents with a 1-year history of progressively enlarging palatal swelling, initially painless, followed by epistaxis, nasal obstruction, dysphagia, and right facial swelling. 🥼What is your differential diagnosis?
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✅Juvenile nasopharyngeal angiofibroma. 💡Look for anterior bowing of the posterior maxillary sinus wall (Holman-Miller sign), pterygopalatine fossa widening, and intratumoral flow voids. Avoid biopsy due to hemorrhage risk. Assess skull base and intracranial extension. doi.org/10.4103/2156-7514.10…
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Doc Navarrow retweeted
Doc Navarrow
@DocNavarrowOct 23
👦A 14-year-old boy presents with a 1-year history of progressively enlarging palatal swelling, initially painless, followed by epistaxis, nasal obstruction, dysphagia, and right facial swelling. 🥼What is your differential diagnosis?
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Replying to @enriquejcatala
Thanks for the addition! hat 2013 morphological classification (megacystic, ring-like, infiltrative, Baló-like) is a good reminder that overall lesion morphology can also carry prognostic value.
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🧠 What imaging patterns should radiologists recognize in autoimmune encephalitis? This review explores the diverse appearances of AE, from limbic involvement to cortical, basal ganglia, brainstem & cerebellar findings, with key differential diagnoses. pubs.rsna.org/doi/10.1148/ra…
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✅Normal fat deposits in the cavernous sinuses. 💡Seen in 20–27% of patients on CT. They may be more prominent in patients with obesity or Cushing syndrome. When the appearance is characteristic, no MRI or follow-up is needed. doi.org/10.3174/ajnr.A1398

Imaging Lesions of the Cavernous Sinus

SUMMARY: Our aim was to review the imaging findings of relatively common lesions involving the cavernous sinus (CS), such as neoplastic, inflammatory, and vascular ones. The most common are neuroge...

ajnr.org
Doc Navarrow
@DocNavarrowOct 22
☎️A resident calls you, concerned about a finding on a head CT. 😓“Should we recommend an MRI to investigate this further?” What would you do?
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✅Normal fat deposits in the cavernous sinuses. 💡Seen in 20–27% of patients on CT. They may be more prominent in patients with obesity or Cushing syndrome. When the appearance is characteristic, no MRI or follow-up is needed. doi.org/10.3174/ajnr.A1398
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Not all enhancement patterns in tumefactive demyelination are equal: 🔄 Open ring → highly specific for demyelination 🧶 Cotton-ball or punctate → consider ADEM or MOGAD 🟠 Homogeneous or nodular → be cautious, can mimic tumors doi.org/10.1038/s41598-024-5…
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👦A 14-year-old boy presents with a 1-year history of progressively enlarging palatal swelling, initially painless, followed by epistaxis, nasal obstruction, dysphagia, and right facial swelling. 🥼What is your differential diagnosis?
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Doc Navarrow retweeted
Doc Navarrow
@DocNavarrowOct 22
☎️A resident calls you, concerned about a finding on a head CT. 😓“Should we recommend an MRI to investigate this further?” What would you do?
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✅Cerebral sparganosis. 🐸🧠If you eat frogs, cook them first! Spirometra larvae can survive in the human body for decades, migrating through the brain and leaving inflammatory tunnels behind. doi.org/10.3174/ajnr.A0659

CT and MR Characteristics of Cerebral Sparganosis

BACKGROUND AND PURPOSE: Sparganosis is a rare parasitic infection in humans by a larval cestode of the genus Spirometra. Preoperative diagnosis of cerebral sparganosis in the past has been very...

ajnr.org
Doc Navarrow
@DocNavarrowOct 21
🐸A 45-year-old woman with a 6-year history of severe headaches, intermittent seizures, and right hemiparesis. She reports eating undercooked frog meat 16 years earlier. 🏥What is your differential diagnosis?
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✅Cerebral sparganosis. 💡Look for tubular or bead-like enhancement, punctate calcifications, and adjacent volume loss rather than mass effect. The tunnel sign reflects larval migration. Lesion migration on serial MRI is a particularly valuable diagnostic clue. doi.org/10.3174/ajnr.A0659
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☎️A resident calls you, concerned about a finding on a head CT. 😓“Should we recommend an MRI to investigate this further?” What would you do?
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Doc Navarrow retweeted
Doc Navarrow
@DocNavarrowOct 21
🐸A 45-year-old woman with a 6-year history of severe headaches, intermittent seizures, and right hemiparesis. She reports eating undercooked frog meat 16 years earlier. 🏥What is your differential diagnosis?
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Este artículo de la @RevistaRADIOLO2  recoge las opiniones de 102 radiólogos y residentes españoles sobre la IA en su práctica diaria: el 77% la percibe como una oportunidad para la profesión, con aplicaciones principales en cribado, interpretación de imágenes e informes, aunque la mayor preocupación sigue siendo el aumento de la carga de trabajo Lee más 🔗f.mtr.cool/pnvlo9zifv In English 🔗f.mtr.cool/f1yvbi3s0x
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✅Obstructive hydrocephalus due to aqueductal compression by a developmental venous anomaly (DVA). 💡Mesencephalic DVAs can rarely cause aqueductal stenosis. Radially converging medullary veins and a collector draining into the vein of Galen support the diagnosis. doi.org/10.3897/folmed.64.e6…

Developmental venous anomaly causing obstructive hydrocephalus due to aqueductal stenosis: а case...

Cerebral developmental venous anomalies are asymptomatic benign cerebrovascular malformations that are commonly found accidentally on brain magnetic resonance imaging. It is not uncommon for cerebr...

foliamedica.bg
Doc Navarrow
@DocNavarrowOct 20
👳‍♂️A 65-year-old man with recurrent conjunctival squamous cell carcinoma presents with gait ataxia, cognitive decline, and urinary and fecal incontinence. No history of head trauma. 🧑‍⚕️What is the underlying cause of his neurological symptoms?
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✅Obstructive hydrocephalus due to aqueductal compression by a developmental venous anomaly (DVA). 💡Mesencephalic DVAs can rarely cause aqueductal stenosis. Radially converging medullary veins and a collector draining into the vein of Galen support the diagnosis. doi.org/10.3897/folmed.64.e6…
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🐸A 45-year-old woman with a 6-year history of severe headaches, intermittent seizures, and right hemiparesis. She reports eating undercooked frog meat 16 years earlier. 🏥What is your differential diagnosis?
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Doc Navarrow retweeted
Doc Navarrow
@DocNavarrowOct 20
👳‍♂️A 65-year-old man with recurrent conjunctival squamous cell carcinoma presents with gait ataxia, cognitive decline, and urinary and fecal incontinence. No history of head trauma. 🧑‍⚕️What is the underlying cause of his neurological symptoms?
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