HEAD-AND-NECK

“TORNWALD CYST”

“ This is a posterior nasopharyngeal cyst. It is common and benign. It is filled with proteinaceous material that will intermittently discharge its contents, causing halitosis and a bad taste. They rarely become infected. CT•  High-attenuation (due to protein content) nasopharyngeal cyst MRI •  Thin-walled cyst•  High signal on T1 and T2 (protein content)•  No …

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“PARANASAL SINUS MALIGNANCY”

“ In total, 80%-90% are SCCs.  It is often clinically silent or may present with an obstructive sinusitis and bone destruction.  Esthesioneuroblastoma is a destructive tumour arising from the olfactory nerve/neurosensory cells of the nasal mucosa and often invades the anterior cranial fossa. CT •  Soft tissue lesion typically at the fossa of Rosenmuller ” …

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“VOCAL CORD PARALYSIS”

“ This may be due to causes including iatrogenic (postoperative/intubation), trauma, thyroid/parathyroid neoplasm, lymphadenopathy and tumour. CT •  Look for medialisation of the arytenoid and adduction of the vocal cord with resulting enlargement of the ipsilateral piriform sinus.•  Atrophy of the cricothyroid muscle.•  Absent thyroid (e.g. post-thyroidectomy).” For Radiology Cases, Discussion join: Radiology Made Easy …

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“JUVENILE NASOPHARYNGEAL ANGIOFIBROMA”

“ This is the most common benign nasopharyngeal tumour. The typical scenario is a teenaged boy with epistaxis.  These are highly vascular tumours and can be locally aggressive. CT •  Densely enhancing mass involving the nasal wall, retromaxillary or pterygopalatine fossa.•  Widening of the pterygopalatine fossa in 90%—pathognomonic.•  Erosion of the medial pterygoid plate is …

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RANULA

This is a retention cyst arising from the sublingual gland. The space; the diving type extends to the submandibular space.  For Radiology Cases, Discussion join: Radiology Made Easy on Facebook  Subscribe to our youtube channel for FRCR radiology case discussion  Join our Telegram group: Radiology Made Easy   

DIFFERENTIAL OF NECK MASSES IN CHILDREN AND ADULTS

“•  Childhood neck masses are benign in 90%; malignancy in this age group is most likely rhabdomyosarcoma or lymphoma.•  90% of adult neck masses are malignant. In those aged <40 years, lymphoma is most likely, and in those aged >40 years, metastasis is most likely.” For Radiology Cases, Discussion join: Radiology Made Easy on Facebook  Subscribe to …

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“PLEOMORPHIC ADENOMA (PAROTID)”

“ The rule of 80%: pleomorphic adenoma accounts for 80% of benign parotid tumours,  80% of pleomorphic adenomas occur in the parotid and  80% occur in the superficial lobe. Up to 20% undergo malignant degeneration. US •  Hypoechoic multiloculated mass Sialogram •  Clawed fist appearance CT •  Well-defined, homogeneous mass that is slightly higher attenuation …

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