1/11. Endoscopically assisted anterior cranial skull base resection of sinonasal tumors.The traditional approach to sinonasal tumors involving the base of skull has been the anterior craniofacial resection. Endoscopic techniques have created the potential to approach the intranasal aspect of skull base lesions without external incisions and still develop an en bloc resection when removed. We report our initial experience with skull base neoplasms in which the otolaryngic portion of the standard resection was accomplished instead through an endoscopic approach. The nature of lesions favorable for this approach and associated technical issues are discussed. Although we do not consider this approach a replacement for the traditional anterior craniofacial resection, it is an important adjunct in the skull base surgeon's armamentarium.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
2/11. Inverted sinonasal papilloma--a report of 31 cases and review of the literature.Inverted papilloma is an epithelial neoplasm of the lateral nasal wall and adjacent sinuses characterized by a marked propensity for recurrence and a significant association with carcinoma. In this retrospective study we present 31 cases treated by our departments between 1982 and 1999. The aim was to compare our results to those of other authors especially regarding surgical management. The male to female ratio of these patients was 2:1 and most patients were in the 6th and 7th decades of life. Conservative surgery was used in most cases as the initial treatment. The overall recurrence rate was low and there were 3 cases associated with carcinoma. We conclude that the results of conservative surgery in selected cases are comparable to those using radical methods. A review of the literature is presented and particular attention is dedicated to the literature concerning analysis of p53 expression, HPV and Epstein-Barr infection and apoptosis in inverted papilloma.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
3/11. Denture hyperplasia with areas simulating oral inverted ductal papilloma.Denture hyperplasia is a reactive lesion of the oral mucosa, usually associated to an ill-fitting denture. This lesion is easily diagnosed and in some cases distinct microscopic variations such as osseous, oncocytic and squamous metaplasia may be found. These metaplastic alterations probably are associated with the lymphocytic infiltrate usually present in denture hyperplasia. We present a case of denture hyperplasia containing salivary gland tissue with ductal alterations mimicking an oral inverted ductal papilloma.- - - - - - - - - - ranking = 28.81127658964keywords = ductal (Clic here for more details about this article) |
4/11. Inverted papilloma invading the orbit through the nasolacrimal duct: a case report.PURPOSE: Inverted papillomas of the nose and paranasal sinuses are uncommon neoplasms, characterized by their tendency to recur and by their association with malignancy and invasive potential to the adjacent structures. The authors report a case of recurrent inverted papilloma of the nasal cavity and sinuses that eventually invaded the orbit through the nasolacrimal duct. METHOD: Assessment and management of a 47-year-old patient who presented with epiphora, left medial canthal area mass, proptosis and lateral displacement of his left eye associated with significant nasal obstruction. RESULTS: Computed tomography and magnetic resonance imaging studies revealed a mass filling the nasal cavities and sinuses, invading the left orbit without destruction of any orbital walls. During excision of the tumor, it was learned that the orbital component of the tumor was connected with the sinonasal tumor through the nasolacrimal duct without any bony defects of the orbit. Histopathology of tumor proved to be inverted papilloma with areas of malignant transformation. CONCLUSION: Athough a rare cause of proptosis, inverted papilloma with orbital invasion must be considered in the differential diagnosis of nasosinus tumors invading the orbit. The case presented demonstrates that these tumors may invade the orbit through the nasolacrimal duct in the absence of orbital wall defects.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
5/11. Inverted ductal papilloma of minor salivary gland: case report with immunohistochemical study and literature review.Inverted ductal papilloma (IDP) is a type of ductal papilloma arising in ducts of minor salivary glands. Very few cases, and no cases in japan, have been reported. Reported herein is a case of IDP with a review of the literature. The patient was a 49-year-old man presenting with a lump in the right buccal mucosa of the premolar area of the mandible. The tumor was excised en bloc after a biopsy diagnosis of IDP. On the surface of the covering epithelium, an opening was seen to be filled with mucinous material. On cut surface the opening led to the tumor cavity. The major portion of the tumor parenchyma was made up of papillary proliferation of basaloid squamous cells. Some crypts, microcysts, and mucous cells were seen. There were no findings suggestive of a malignant tumor. The patient's postoperative course was uneventful and there has been no recurrence after 1 year's follow up. Immunohistochemical analysis of the present case supports the hypothesis that IDP originates from squamous metaplasia and proliferation of minor salivary gland duct cells.- - - - - - - - - - ranking = 28.81127658964keywords = ductal (Clic here for more details about this article) |
6/11. Inverted papilloma of the upper urinary tract.Inverted papillomas of the upper urinary tract are rare lesions that have a male predominance. The associated symptoms are similar to those of other urothelial neoplasms. The tumors are considered benign and local excision has been advocated by many but long-term followup is lacking. We present a case of a locally excised inverted papilloma of the renal pelvis with a 3.5-year followup. While local excision appears to be ideal treatment, the difficulty with preoperative diagnosis and the reported coexistence of malignancy demand careful patient selection and close long-term followup. The biological potential of recurrence, multicentricity and malignancy is addressed.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
7/11. Inverted ductal papilloma of minor salivary glands.Inverted ductal papillomas are rare tumours of minor salivary glands. A case is reported on the lower lip of a 50-year-old man. The tumour showed a characteristic endophytic growth pattern and was composed of bulbous papillary projections of basaloid cells dilating and filling the superficial portion of the excretory duct. Histologically, inverted ductal papillomas resemble the inverted papilloma of the nose and paranasal sinuses, but are completely benign and are not associated with malignant change.- - - - - - - - - - ranking = 28.81127658964keywords = ductal (Clic here for more details about this article) |
8/11. Fine needle aspiration of inverted Schneiderian papilloma. A case report.The cytologic and histopathologic findings in an inverted Schneiderian papilloma of the paranasal sinuses are described. This uncommon neoplasm of the sinonasal region is characterized by a significant recurrence rate and an association with squamous cell carcinoma in 7-13% of patients. Fine needle aspiration of inverting papillomas may allow rapid identification of the lesion when a tissue biopsy is impractical.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
9/11. Inverted papilloma of the middle ear.Inverted papilloma is a benign neoplasm confined almost exclusively to the sinonasal tract. We present the first known case report of an inverted papilloma arising from the middle ear. In this paper we discuss the pathophysiology and review the literature of this interesting clinical entity.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
10/11. Midfacial degloving for the management of nasal, sinus, and skull-base neoplasms.The midfacial degloving approach to the midfacial orbital and anterior skull base structures is very versatile. It provides excellent access to a wide range of resections, such as medial maxillectomy, radical maxillectomy with and without orbital exenteration, anterior skull base cranifacial resection, and partial rhinectomy. This technique is useful for removal of benign and malignant lesions. The postoperative complications are rare. Because of absence of external skin incisions the cosmetic results are excellent.- - - - - - - - - - ranking = 4keywords = neoplasm (Clic here for more details about this article) |
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