inverted papilloma


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in·vert·ed pap·il·lo·ma

an eplithelial tumor of the urinary bladder or nasal cavity in which proliferating epithelium is invaginated beneath the surface and is more smoothly rounded than in other papillomas.

inverted papilloma

ENT An inverted or exophytic tumor of nasal cavity and paranasal sinuses, which recurs in ±23 of cases; malignancy develops in 2% Surgical pathology A proliferation of thin epithelium overlying papillary fibrovascular fronds, found in either transitional epithelium–renal pelvis, ureters, bladder, urethra or stratified cuboidal epithelium–paranasal region,34 of Pts also had HPV types 6 and 11 and upper respiratory tract lesions
References in periodicals archive ?
According to the World Health Organization, an inverted papilloma is derived from the Schneiderian membrane.
Sinonasal inverted papilloma associated with squamous cell carcinoma.
Sinonasal inverted papilloma is a statistically rare condition; however, it is prevalent enough for each ENT practitioner to encounter this disease multiple times throughout his professional routines.
Potentially distinctive features of sinonasal inverted papilloma on MR imaging.
Sinonasal inverted papilloma (IP) or Schneiderian papilloma is a rare benign tumor of the nasal cavities and paranasal sinuses.
Histology and histogenesis of two different types of inverted papillomas. Cancer 1983; 51: 348-58.
HPE concluded the diagnosis of inverted papilloma. The patient is on follow-up for 1.5 years after surgery without any recurrence.
For example, convoluted cerebriform pattern is a reliable MRI feature of sinonasal inverted papillomas, [sup][8] but it is also demonstrated in a proportion of malignant tumors.
Inverted papilloma shows a thickened epithelium bound by an intact basement membrane growing endophytically into the underlying stroma (figure 1).
Inverted papilloma (IP) is a space occupying lesion encountered primarily in the nasal cavity and paranasal sinuses.[sup.1] It is a rare disease of the urinary tract.