Case Studies in the Larynx Non-SCC Pathology Nicholas S. Pierson, MD University of Utah...
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Transcript of Case Studies in the Larynx Non-SCC Pathology Nicholas S. Pierson, MD University of Utah...
Case Studies in the LarynxNon-SCC Pathology
Nicholas S. Pierson, MD
University of Utah Neuroradiology
12th Intensive Interactive
Head and Neck Imaging Conference
• Case based review of key laryngeal diagnoses and imaging characteristics
• Dispel the myth that “the only thing that happens in the larynx is SCC”
• Provide appropriate differential diagnoses• Introduce some uncommon pathologies
of the larynx
Objectives
• 49 year old male• Progressive difficulty breathing• Globus sensation• 30 pack year smoking history
Case 1
• Polyp• Nodule• Polypoid degeneration• Squamous papilloma• SCC
DDX
• Small exophytic growth from the true cord
• Usually solitary• Present with hoarseness, breathiness,
vocal fatigue, decreased vocal range• Proposed causes: vocal abuse, GERD,
nasosinusitis, irritants
Vocal Cord Polyp
Companion Case 1a
Vocal Cord Nodule
• 75 year old male with hoarseness• Obvious mass on laryngoscopy• Abnormality found incidentally on
imaging 10 years prior• Refused treatment at the time
Case 2
T1
T2 FS
T1 FS Post
• Chondroid lesion: Chondroma\sarcoma• Other sarcomas• Inflammatory cartilaginous processes
such as relapsing polychondritis• SSC• Rare lesions: Carcinoid, paraganglioma,
giant cell tumors• Mets/Myeloma
DDX
• Expansile mass within laryngeal cartilage• Cricoid most common• Can contain calcified matrix, ring-like or
popcorn• Difficult to exclude SCC in non-calcified
lesions• Present with dysphagia, dysphonia, or
stridor
Low Grade Chondrosarcoma
• 67 year old male • Incidental lesion seen on MRI C-spine• Asymptomatic
Companion Case 2a:
• 39 year old male• Difficulty breathing
Companion Case 2b:
Giant Cell Tumor
• 64 year old male• History of multiple myeloma and right
inguinal melanoma• Metastatic workup
Case 3:
Multiple Myeloma
T2 FS T1 T1 FS Post
• 76 year old male• History of multiple myeloma
Companion Case 3a:
Multiple Myeloma
• 71 year old male• History of prostate cancer
Companion Case 3b:
• 74 year old male with skull base lesion• Surgical debulking of the left skull base
and orbit many years prior• Dysphonia, dysphagia
Companion Case 3c: Pitfall
Teflon Granuloma
• Some patients who have primary malignancies develop vocal cord paralysis
• Some of these patients undergo vocal cord medialization
• These have variable appearances and can look mass like
• Can also be hot on PET
Vocal Cord Medialization Pitfall
• 55 year old male with dysphagia• Fluctuant neck mass • Changes in size and tenderness• Occasional copious secretions
Case 4
T2FS
• Laryngocele• Other cystic neck masses
• Thyroglossal duct cyst• Branchial cleft cyst 2 and 4
• Lateral hypopharyngeal pouch• Abscess• Vallecular cyst• Cystic nodal mass
DDX
• Paraglottic/Supraglottic• Extend through the
thyrohyoid membrane• Circumscribed, thin
walled, may contain fluid or air
• Present as neck mass in low submandibular space
External (mixed) Laryngocel
• Internal/Simple: confined to paraglottic space
• External/Mixed: internal and external components
• Pyolaryngocele: superinfection• Secondary: Glottic or inferior supraglottic
mass obstructs laryngeal ventricle
Laryngocele Types
• 88 year old female with papillary thyroid cancer and lung cancer
• 70 year history of ~5 cigarettes per day• Hoarseness • CT STN as part of workup
Companion Case 4b
SCC with Secondary Laryngocele
• 34 year old mixed martial artist• 2 days following tournament• Throat injury with progressive pain and
difficulty breathing
Case 5
8/2013 8/2012
• Can be caused by any trauma involving neck: blunt, hanging, penetrating
• Include cartilages in search pattern• Important to exclude to avoid airway
compromise• When present evaluate surrounding soft
tissue and airway• May be a subtle finding
Thyroid Cartilage Fracture
• Equestrian injury
Companion Case 5a
• 38 year old female• 8 weeks of hoarseness
Case 6
T1
T1Post
T1Post
T2
• Sail sign- ballooned ventricle• Medial rotation of arytenoid• Medialized aryepiglottic fold • Enlarged pyriform sinus
Vocal Cord Paralysis
• Extensive DDX: Injury to CN10 or RLN anywhere from medulla to AP window• Trauma, neoplasm, idiopathic, stroke
• Checklist: Medulla, Jugular foramen, carotid space, TE grove, mediastinum
Vocal Cord Paralysis
• 73 year old male • Extensive smoking history• Hoarseness
Companion Case 6a
• 43 year old male • Acute Horner’s syndrome and
nystagmus
Companion Case 6b
Lateral Medullary Syndrome
DTIFlairFS
• 33 year old woman• Progressive, worsening shortness of
breath
Case 7
• Iatrogenic• Post traumatic• Thyroid mass/mass effect
• Idiopathic/congenital• RP, Wegener’s• Amyloid, Sarcoid• Schwannoma• Vascular rings/slings• SCC
DDX: Subglottic Stenosis
Craniotomy for traumatic brain injury 10 years ago
• Most common intrinsic cause, ~90%
• Hx of prolonged intubation• Pressure necrosis• Describe level and length• Is the cricoid involved?
Iatrogenic Subglottic Stenosis
• 44 year old female• Dysphagia
Case 8
T1
T1FS+C
T1FS+C
T2
• Paraganglioma• Schwannoma• Vasoformative lesion• Metastasis• Hemangiopericytoma
DDX
• Rare, well-circumscribed, enhancing, prominent flow voids
• Most common in supraglottis in the region of the aryepiglottic fold
• Paired paraganglia arise from RLN• Similar to carotid body tumor• Symptom is primarily mass effect• 3:1 F:M, mean age 44 years old
Paraganglioma
• 63 year old female• Dysphagia, dysphonia• Difficulty breathihng
Companion Case 8a
Vasoformative Lesion
• 35 year old female• Dysphagia, dysphonia
Companion Case 8b
Schwannoma
Pre Post
• Discussed part of the spectrum of non-SCC pathology of the larynx
• Covered differential diagnoses of potentially encountered lesions
• Reviewed some less common lesions of the larynx included in their differentials
• Additional pathology to consider
Conclusion
Case Studies in the LarynxNon-SCC Pathology
Nicholas S. Pierson, MD
University of Utah Neuroradiology
12th Intensive Interactive
Head and Neck Imaging Conference
• Incidental findings in 2 different patients• Low density foci in the thyroid cartilage• Recently described as “benign tumor like
lesions” and “pseudo-lesions”
Companion Case 3d: Mimic