Clinical and Imaging Features of Noncutaneous Melanoma

Wong, Vincenzo K.; Lubner, Meghan G.; Menias, Christine O.; Mellnick, Vincent M.; Kennedy, Tabassum A.; Bhalla, Sanjeev; Pickhardt, Perry J.

doi:10.2214/ajr.16.16800

Cited by 45 publications

(38 citation statements)

References 92 publications

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“…CT findings are nonspecific; however, CT is useful for the evaluation of the remodeling of the the surrounding bone or bony erosion [ 36 ]. On T1WI, sinonasal MMs that contain melanin or hemorrhage usually show iso- to hyperintensity relative to the gray matter; however, amelanotic melanoma may also show hypointensity ( Figure 8 ).…”

Section: Sinonasal Malignanciesmentioning

confidence: 99%

Imaging Characteristics of Malignant Sinonasal Tumors

Kawaguchi

Kato

Tomita

et al. 2017

JCM

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Malignancies of the nasal cavity and paranasal sinuses account for 1% of all malignancies and 3% of malignancies of the upper aerodigestive tract. In the sinonasal tract, nearly half of all malignancies arise in the nasal cavity, whereas most of the remaining malignancies arise in the maxillary or ethmoid sinus. Squamous cell carcinoma is the most common histological subtype of malignant tumors occurring in this area, followed by other epithelial carcinomas, lymphomas, and malignant soft tissue tumors. Although many of these tumors present with nonspecific symptoms, each tumor exhibits characteristic imaging features. Although complex anatomy and various normal variants of the sinonasal tract cause difficulty in identifying the origin and extension of large sinonasal tumors, the invasion of vital structures such as the brain, optic nerves, and internal carotid artery affects patients’ prognosis. Thus, diagnostic imaging plays a key role in predicting the histological subtype and in evaluating a tumor extension into adjacent structures. This article describes the computed tomography and magnetic resonance imaging findings for malignant sinonasal tumors.

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Section: Sinonasal Malignanciesmentioning

confidence: 99%

Imaging Characteristics of Malignant Sinonasal Tumors

Kawaguchi

Kato

Tomita

et al. 2017

JCM

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“…Pigmented villonodular synovitis and tenosynovial giant cell tumor may show a similar contrast-enhancement pattern but due to hemosiderin deposition, the lesion contains low-signal-intense foci on T1-and T2-WI, causing blooming artifacts on T2* sequences [13]. Synovial melanoma may show hyperintense foci on T1-WI due to the presence of melanin [14]. Vascular malformations involving the synovium show vascular channels with fluid-fluid levels, intermediate signal on T1-WI, high signal on T2-WI and diffuse contrast-enhancement.…”

Section: Discussionmentioning

confidence: 99%

Glomangiomyoma of the Knee: A Rare Juxtasynovial Presentation

Hustings

Vanhoenacker²,

Backer

2020

Journal of the Belgian Society of Radiology

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“…In der Diffusionsbildgebung lässt sich eine zentrale Diffusionsrestriktion nachweisen. Nach Kontrastmittelgabe kommt es zu einer kräftigen Mehranreicherung [17].…”

Section: Primäre Durale Melanomeunclassified

Diagnostik und Differenzialdiagnostik von Erkrankungen der Hirnhäute

Langner¹,

Henker²

2020

Radiologie up2date

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ZusammenfassungErkrankungen der Hirnhäute gehen mit einem pathologischen Signal auf T2w und nativen T1w Aufnahmen einher und zeigen eine pathologische (durale oder leptomeningeale) Mehranreicherung. In diesem Beitrag werden typische Erkrankungen der Meningen vor allem anhand der MRT dargestellt: Die Veränderungen selbst zeigen sich am besten auf kontrastmittelverstärkten T1w und die extrazerebrale Lage am besten auf hochauflösenden T2w Aufnahmen.

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Clinical and Imaging Features of Noncutaneous Melanoma

Cited by 45 publications

References 92 publications

Imaging Characteristics of Malignant Sinonasal Tumors

Imaging Characteristics of Malignant Sinonasal Tumors

Glomangiomyoma of the Knee: A Rare Juxtasynovial Presentation

Diagnostik und Differenzialdiagnostik von Erkrankungen der Hirnhäute

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