Angiomatous nasal polyp (ANP) is a relatively rare benign lesion, which may be misdiagnosed as a benign or malignant tumor. The characteristic pathological features of ANP are expanded angiogenesis, accumulation of extracellular amorphous …

Partial obstruction of the left ethmoid air cells. This is a case of a large sinonasal angiomatous polyp (SAP), a rare subtype of antrochoanal polyp. SAP is a proliferative fibrotic process with neovascularization due to chronic sinus obstruction that is …

Sinonasal angiomatous polyp (SAP) is a rare subtype of sinonasal polyp that might be misdiagnosed as a malignant lesion due to its clinical symptoms. We retrospectively enrolled the patients who were diagnosed with SAP in our hospital during 2008–2015.

Angiomatous polyp is a benign, nonneoplastic nasal polyp that accounts for 4-5% of all inflammatory nasal polyps but is rarely reported in the literature. It can grow rapidly and exhibit an aggressive clinical behavior that can simulate malignant sinonasal tumor.

Apr 1, 2012 · Inflammatory sinonasal polyps are classified into 5 types: edematous, glandular, fibrous, cystic, and angiomatous, 1 and the SAP is an uncommon subtype of inflammatory sinonasal polyp.

Angiomatous polyps are the extremely rare variant of sinochoanal polyps that are characterised by dilated, large vascular spaces. A 27-year-old female patient presented with a three-month history of unilateral right-sided nasal obstruction and recurrent mild epistaxis.

Sep 10, 2020 · Sinonasal angiectatic or angiomatous polyp (SAP), a rare entity, comprises about 4–5% of all inflammatory sinonasal polyps [1]. Their varied presentation simulates pathologies like hemangioma, inverted papilloma, angiofibroma or malignancy [2].

Introduction: Angiectatic nasal polyp (ANP) is a rare entity of inflammatory sinonasal polyp, constituting 4 to 5% of all nasal polyps.1 An angiomatous polyp originates from a sinochoanal polyp, either an antrochoanal or a sphenochoanal polyp.

Jun 22, 2023 · Angiectatic Nasal Polyp with Pleomorphism (PANP) are benign lesions of nose and paranasal sinuses, 2 characterized by hemorrhage and necrosis, occasionally accompanied by bizarre large pleomorphic spindle cells hyperplasia.

Jun 17, 2013 · Sinonasal angiomatous polyp (SAP) is a rare benign and non-neoplastic lesion. It is primarily composed of extensively hyperplastic and dilated vessels with scanty inflammatory infiltration and abundant extracellular fibrin [1,2].