Non-squamous cell neoplasms of the larynx: radiologic-pathologic correlation

Article Article scientifique Article Non-squamous cell neoplasms of the larynx: radiologic-pathologic correlation eng 1998 author Becker Minerva 134255 author Moulin Guy 74920 author Kurt Anne-Marie 526547 author Dulgerov P author Vukanovic Savo 59191 author Zbären P author Marchal Francis 34836 author Rüfenacht D author Terrier François 27166 1189-1209 10.1148/radiographics.18.5.9747615 9747615 0271-5333 A variety of benign and malignant non-squamous cell neoplasms may affect the larynx. Most of these uncommon laryngeal neoplasms are located beneath an intact mucosa, making diagnosis difficult with endoscopy alone, and sampling errors may occur if only traditional superficial biopsies are performed. In some laryngeal neoplasms, radiologic evaluation allows the correct diagnosis. Hemangiomas have very high signal intensity at T2-weighted magnetic resonance (MR) imaging and strong enhancement at both computed tomography (CT) and MR imaging after administration of contrast material. Phleboliths, which are pathognomonic for hemangiomas, are easily identified at CT. Chondrogenic tumors typically manifest with coarse or stippled calcifications at CT. Because of their high water content, chondrogenic tumors have very high signal intensity on T2-weighted MR images, whereas only moderate enhancement is observed after administration of contrast material. Lipomas typically manifest at both CT and MR imaging as homogeneous nonenhancing lesions. They are isoattenuating to subcutaneous fat at CT and isointense relative to subcutaneous fat with all MR pulse sequences. Metastases from renal adenocarcinoma typically demonstrate strong contrast enhancement and flow voids at MR imaging, and metastases from melanotic melanoma usually have high signal intensity on T1-weighted MR images and low signal intensity on T2-weighted images owing to the paramagnetic properties of melanin. Although radiologic findings are nonspecific in most other non-squamous cell neoplasms of the larynx (eg, Kaposi sarcoma, hematopoietic tumors, tumors of the minor salivary glands, metastases from amelanotic melanoma), cross-sectional imaging can play an important role in the diagnostic work-up of these unusual tumors by delineating the extent of submucosal tumor spread and directing the endoscopist to the appropriate site for the deep, transmucosal biopsies needed to establish the diagnosis. In addition, CT and MR imaging are crucial for posttherapeutic monitoring and early detection of local recurrence. Carcinoma, Squamous Cell Female Humans Laryngeal Neoplasms/pathology/radiography/secondary Larynx/pathology Magnetic Resonance Imaging Male Middle Aged Salivary Gland Neoplasms/pathology/radiography Salivary Glands, Minor Tomography, X-Ray Computed Dewey 616.0757 62 Département de radiologie et informatique médicale 227 false 411 Groupe Becker Minerva (imagerie ORL) 683 Radiographics 18 5 75bae3dc-8ef8-4990-b169-e4c0a50667af Article (Published version) Restricted Non-squamous cell neoplasms of the larynx.pdf 3608801 application/pdf restrictedAccess Faculté de médecine / Section de médecine clinique / Département de radiologie et informatique médicale

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Non-squamous cell neoplasms of the larynx: radiologic-pathologic correlation	Radiographics			1998	560	0

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Vukanovic, Savo