MR Evaluation of Sinonasal Angiomatous Polyp

Wang, Y.Z.; Yang, Bentao; Wang, Z.C.; Song, Libin; Jian, Xian

doi:10.3174/ajnr.a2856

Cited by 34 publications

(42 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The clinical and radiological characteristics of these lesions have considerable potential for confusion with neoplastic processes, including juvenile angiofibroma, inverted papilloma, and hemangioma. To our knowledge, three correlative clinical studies have reported on the relationship between radiological findings and the pathological features of ANPs [2]–[4]. Although reports of CT findings of sinonasal ANPs have been published and given that ANP imaging is reported to be rather nonspecific, it would be useful to perform a comprehensive systematic analysis of a large group of lesions to determine whether imaging features specific for ANPs can be identified.…”

Section: Introductionmentioning

confidence: 99%

Correlation of Computed Tomography with Pathological Features in Angiomatous Nasal Polyps

et al. 2012

View full text Add to dashboard Cite

BackgroundAngiomatous nasal polyps (ANPs), also known as angiectatic polyps, have rarely been reported in the literature. ANPs are characterized by extensive vascular proliferation and ectasia. ANPs can grow rapidly and exhibit aggressive clinical behavior that could simulate malignancy preoperatively, and they are easily confused with other diseases. In the present study, we analyzed the correlation between the computed tomography (CT) findings of nasal angiomatous polyps and their pathological features.MethodsWe evaluated CT findings and pathological features of 31 surgically proven ANPs.ResultsThe study population included 16 males and 15 females aged between 27 and 81 years (mean age, 53.5 years). On CT, the masses were heterogeneous; they had a soft tissue density and filled the maxillary and/or nasal cavities. Calcifications were found in 2 of the 31 cases. The lesions showed a clear boundary (15/31). The low-density shading on CT was related to the inflammatory, necrotic, and cystic changes, and the high-density shading on CT was related to hemorrhagic areas of the mass. On contrast-enhanced CT, the center of the lesions was non-enhanced with peripheral intensification due to occlusion or compression of feeder vessels of the polyp center, and the inflammatory cells and neovascularization around the edge of the mass. The most common site of maxillary wall erosion was the medial wall (21/31), followed by the posterior lateral wall (3/31), upper wall (2/31), and septum (3/31). Of these, the nasal cavity and/or maxillary sinus were enlarged in 28 cases. These findings were associated with the chronic progress of nasal angiomatous changes.ConclusionsCT of ANPs may demonstrate benign bone changes associated with the lesions and may also reflect the fact that ANPs do not invade peripheral soft tissue. CT demonstrated these lesions consistently and provided information useful for surgical planning.

show abstract

Section: Introductionmentioning

confidence: 99%

Correlation of Computed Tomography with Pathological Features in Angiomatous Nasal Polyps

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Reduced diffusion and progressive enhancement on dynamic contrast-enhanced perfusion studies have also been demonstrated in association with sinonasal angiomatous polyps. 38 An important consideration in the differential diagnosis of a sinonasal angiomatous polyp is juvenile nasal angiofibroma, as the signal characteristics may be similar. However, juvenile nasal angiofibroma will show a different growth pattern, usually originating near the sphenopalatine foramen with extension into the sinus, pterygopalatine fossa, infratemporal fossa, or orbits.…”

Section: Sinonasal Polyposismentioning

confidence: 99%

Magnetic Resonance Imaging in Sinonasal Disease

Betts

Cornelius

2015

Topics in Magnetic Resonance Imaging

View full text Add to dashboard Cite

Computed tomography (CT) is often the primary imaging modality for the evaluation of sinonasal disease. For some indications, magnetic resonance imaging (MRI) may provide additional information. There are established indications for using MRI in complicated sinonasal inflammatory disease, invasive fungal sinus disease, and sinonasal mass lesions. When MRI is used in the evaluation of sinonasal disease, it is usually used as a complementary modality in addition to CT. Magnetic resonance imaging in sinonasal disease can be used to further characterize the primary sinonasal disease process and to evaluate the extent of complications such as orbital or intracranial involvement. When MRI is used in sinonasal disease, it should be evaluated in the context of the clinical situation and CT imaging features. This will help radiologists provide a meaningful differential diagnosis to assist in clinical management.

show abstract

“…6 Conventional magnetic resonance imaging (MRI) is a better modality for preoperative diagnosis of the angiomatous nasal polyp, and show characteristic hypointensity on T1 weighted images and internal heterogeneous hyperintensity with a peripheral hypointense rim on T2 weighted images, as well as and strong nodular and patchy enhancement on postcontrast MRIs. 2,9,11 Moreover, progressive enhancement on DCE MRI is very important diagnostic clue. 9 Areas of mixed signal intensity on T2 weighted images are supposed to be caused by the extensive areas of organized thrombus and necrosis in that part of polyp and the peripheral hypointense rim on T2 weighted images due to old microhemorrhage with hemosiderin deposition on the surface of the polyp.…”

Section: Discussionmentioning

confidence: 99%

“…2,9,11 Moreover, progressive enhancement on DCE MRI is very important diagnostic clue. 9 Areas of mixed signal intensity on T2 weighted images are supposed to be caused by the extensive areas of organized thrombus and necrosis in that part of polyp and the peripheral hypointense rim on T2 weighted images due to old microhemorrhage with hemosiderin deposition on the surface of the polyp. 2 Post contrast strong enhancement of nasochoanal portion of ANP suggest extensive vascular proliferation and ectasis.…”

Section: Discussionmentioning

confidence: 99%

“…1,7 Non epithelial tumors of the nasal cavity and nasopharynx are usually vascular tumours. 8 Due to prominent vascular component of ANPs, there is diagnostic dilemma mainly with capillary or cavernous hemangioma 9 and nasopharyngeal angiofibroma. 10 The vascular lamina of cavernous hemangioma is usually larger than those of angiomatous polyp.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Angiomatous nasal polyp: Clinical diagnostic dilemma

Goyal

Jayvardhan

Goyal

et al. 2015

Int J Cancer Ther Oncol

View full text Add to dashboard Cite

Angiomatous polyp (Angiectatic nasal polyps) is rare and its incidence is 4-5% of all nasal polyps. As it occurs with variable clinical features and there is no confirmatory preoperative investigation, clinical diagnosis can be a dilemma. Clinical picture of angiofibroma, simple antrochoanal polyp and inverted papilloma may resemble with each other. As polyps invade surrounding bone, these should be distinguished from a malignant mass. We present an interesting case of an infarcted angiectatic nasal polyp with extensive surrounding bony destruction. Correct preoperative radiological diagnosis is important to avoid unnecessary extensive surgery. Histopathological evaluation of polyps is mandatory since they require different treatment due to difference in the prognosis.

show abstract

MR Evaluation of Sinonasal Angiomatous Polyp

Cited by 34 publications

References 25 publications

Correlation of Computed Tomography with Pathological Features in Angiomatous Nasal Polyps

Correlation of Computed Tomography with Pathological Features in Angiomatous Nasal Polyps

Magnetic Resonance Imaging in Sinonasal Disease

Angiomatous nasal polyp: Clinical diagnostic dilemma

Contact Info

Product

Resources

About