1/26. 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 = nature (Clic here for more details about this article) |
2/26. Sinus polyp-associated soft tissue lesion and unilateral blindness: complications of extraction in leukemic patient.A case of an inflammatory polyp-associated lesion extending through an extraction socket appearing as an intraoral nodular lesion and unilateral blindness secondary to leukemic optic nerve head infiltration is reported. The patient was a 28-year-old male whose his upper first molar had been extracted fifteen days previously. The lesion was an asymptomatic soft tissue mass, red in color and hot tender to palpation, involving the alveolar ridge in the maxillary molar area. Although this is apparently a rare occurrence, the nature of the lesion was suggested by the history, clinical appearance, and radiographic findings. Excision of the inflammatory lesion was followed by complete healing with closure of the lesion. Unfortunately, the blindness was irreversible. The patient is still under leukemia therapy. review of the literature did not yield any other such cases. The role of oral lesions as a diagnostic indicator and the importance of dental surgeons in the diagnosis of leukemic patients are discussed. It is concluded that proper precautions and meticulous early diagnosis are required in these patients and that dental practitioners should be aware of the diagnostic features and possibilities of oral complications associated with leukemia.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
3/26. Intravascular papillary endothelial hyperplasia in a vascular lesion of the paranasal sinus.Intravascular papillary endothelial hyperplasia (IPEH) is usually a cutaneous lesion thought to represent a peculiar manifestation of an organizing thrombus. The principal significance of IPEH is its microscopic resemblance to angiosarcoma and possible misinterpretation as such. The occurrence of IPEH in the paranasal sinus is exceedingly rare. In this article, we report the first case to our knowledge of IPEH in a vascular lesion that originated from the ethmoid sinus and extended into the sphenoid sinus and sella. Despite the benign nature of this lesion, it could have been mistaken for a malignant tumor because of its clinical course and radiologic findings.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
4/26. Isolated inverted papilloma of the sphenoid sinus.Inverted papilloma is a rare benign sinonasal tumour, characterized by a potentially invasive nature. The lateral nasal wall represents the most common site of origin, whereas paranasal sinuses are quite frequently found to be involved by extension. In contrast, primary sinus inverted papillomas have rarely been reported. The present study describes an extremely rare case of inverted papilloma, isolated to the left sphenoid sinus, that was treated by a transnasal endoscopic procedure. The therapeutic approach chosen is discussed and the results of a two-year follow-up are also presented.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
5/26. Sinonasal desmoplastic small round cell tumor: a case report.A case of sinonasal desmoplastic small round cell tumor in a 21-year-old woman is presented. The tumor possessed the diagnostic histologic, immunohistochemical, and genetic characteristics of desmoplastic small round cell tumor. Histologically, the tumor was composed of nests of tumor cells surrounded by a desmoplastic stroma. Immunohistochemical staining was positive for keratin, vimentin, desmin, and, focally, neuron-specific enolase. The desmin immunopositivity was of a classic dot-like perinuclear pattern. RT-PCR analysis showed the fusion transcript resulting from the t(11;22)(p13;q12) reciprocal translocation. This case of sinonasal desmoplastic small round cell tumor, the third reported case not associated with a serosal surface, further obscures the nature and histogenesis of this entity.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
6/26. myxoma of the nasal cavity and paranasal sinuses: report of a case.Myxomas are benign connective tissue tumors composed of stellate and spindle-shaped cells with benign-appearing nuclei lying in a myxoid stroma. They are usually found in the heart, soft tissues, and bones. Myxomas of the nasal cavity and paranasal sinuses are very rare. They are benign but of a locally invasive nature. Recurrent rate is high because of the difficulty to excise them completely. This article presents a case of myxoma of the nasal cavity and paranasal sinuses that extensively invaded the brain and orbits causing blindness. After three resections, also with a transbasal craniotomy in the second operation, the patient remains free from the disease.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
7/26. A rare location of bilateral inverted papilloma of the nose and paranasal sinuses.Inverted papilloma is a rare benign sinonasal tumour, characterized by a potentially invasive nature. The lateral nasal wall represents the most common site of origin, whereas paranasal sinuses are involved by extension quite frequently. In contrast, primary sinus inverted papillomas have rarely been reported. Although the midfacial degloving approach has historically been the procedure of choice, recent technological advances have rendered endoscopic sinus surgery a safe procedure with equivalent success rates and low probability of papilloma recurrence. We present a rare case of bilateral inverted papilloma arising from the sphenoid septum and extending towards both the sphenoid and posterior ethmoid sinuses and the posterior section of both nasal cavities, while it slenderizes the sella turcica by compression and elevates the pituitary gland. The bilateral inverted papilloma was successfully removed with a transnasal endoscopic procedure. There is no evidence of recurrence for a follow up period of 1.5 years postoperatively. We conclude that it is a rare entity, which can be treated successfully with endoscopic sinus surgery in the hands of an experienced otorhinolaryngologist.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
8/26. Aspiration biopsy. An aid in the diagnosis of para-nasal tumours.Three cases are reported to demonstrate (1) the difficulty in diagnosing the nature of nasopharyngeal tumours (2) the assistance given by the fine-needle aspiration biopsy technique in cases of paranasal tumours. Reliance should not be placed on this technique alone. It should be performed at the initial examination together with conventional techniques. In this way, the patient may be spared the need for multiple anaesthetics and a diagnosis may be arrived at more promptly so that treatment may be instituted more quickly.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
9/26. Sinonasal paraganglioma: endoscopic resection with a 4-year follow-up.BACKGROUND: Paragangliomas are uncommon neuroendocrine tumors. In the head and neck, they are most commonly seen at the carotid body, the temporal bone, or along the vagus nerve. Sinonasal paragangliomas are extremely rare. Most cases reported describe management by open surgical resection, with sublabial and/or transfacial approaches. methods: We present a case of a large sinonasal paraganglioma successfully managed by endoscopic resection. RESULTS: The patient has no evidence of recurrence after 4 years of follow-up. CONCLUSIONS: This case demonstrates that sinonasal paragangliomas might be amenable to endoscopic resection. However, the most important priority to consider when selecting a surgical technique is whether adequate excision with clear margins can be obtained. Furthermore, because of the aggressive nature of these tumors, regardless of the surgical approach, long-term follow-up is recommended.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
10/26. Burkitt-like lymphoma of the sphenoid sinus: case report.Burkitt's lymphoma is a malignant endemic neoplasia with a mandibular localization, described for the first time in 1958, in African children. The world health organization classification recognises several variants of Burkitt's lymphoma; all are highly malignant B cell lymphomas. Besides Burkitt's sporadic, endemic lymphoma and Burkitt's lymphoma associated with AIDS, the world health organization classification includes an "atypical or pleomorphic" variant of Burkitt's lymphoma. This subtype includes those cases diagnosed as "Burkitt-like" lymphoma in the REAL (Revised European-American classification of Lymphoid Neoplasm). The therapeutic protocol is similar to that used for classic Burkitt's lymphoma, with chemotherapy being standard treatment. prognosis is extremely poor, with a mean survival of < 1 year. The case is described of a sinus-nasal "Burkitt-like lymphoma", originating within sphenoid sinus. The extremely rare localisation of this histological variant of Burkitt's lymphoma is stressed as well as the extremely aggressive nature of the neoplasm.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
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