1/31. Nasal manifestation of extranodal Rosai-Dorfman disease--diagnosis and management.Two cases of Rosai-Dorfman disease with polypoid nasal infiltration mimicking nasal tuberculosis and malignant lymphoma are reported. This rare benign disease was first described by Rosai and Dorfman in 1969 and is characterized by histiocytic proliferation. It is seldom considered in the differential diagnosis of granulomatous diseases due to its rarity and histological similarity to other diseases. Extranodal manifestations of this disease are uncommon. Although no specific treatment can guarantee a sustained remission of this disease, surgery for loco-regional lesions can result in long-term symptomatic control and restoration of function. Both patients underwent endoscopic resection of the nasal polypoid lesions and have subsequently been free of recurrence. Loco-regional infiltration of the nasal cavity by Rosai-Dorfman disease is effectively managed by endoscopic resection.- - - - - - - - - - ranking = 1keywords = cavity (Clic here for more details about this article) |
2/31. ameloblastoma with basal cell carcinoma-like feature emerging as a nasal polyp.A case of a 63-year-old man with ameloblastoma with basal cell carcinoma (BCC)-like features clinically emerging as a nasal polyp is reported. The left nasal cavity was filled with a solid mass, which seemed to be a sinusitis-associated nasal polyp. The polyp was covered by parakeratotic squamous epithelium which was directly connected to the BCC-like tumor nest. The BCC-like features gradually changed to adamantinoid features. The polyp was connected with a huge mass filling the maxillary sinus and the molar area, which consisted of conventional ameloblastoma features. Although the tumor was finally diagnosed as an ameloblastoma of the maxilla, the biopsy specimen forced us to face the problem of differential diagnosis, ameloblastoma with BCC-like features or adamantinoid basal cell carcinoma (BCC). Immunohistochemical examination revealed that tumor cells of the ameloblastoma reacted with anticytokeratin antibody KL-1 but not with antiepithelial antibody Ber-EP4, and these reaction patterns were completely contrary to those of BCC. It is emphasized that immunohistochemical examination using anticytokeratin antibody KL-1 and antiepithelial antibody Ber-EP4 is a good tool for distinguishing ameloblastoma with BCC-like features from adamantinoid BCC.- - - - - - - - - - ranking = 1keywords = cavity (Clic here for more details about this article) |
3/31. Sinonasal lymphomas. Case report.In the field of Otorhinolaryngology sinonasal lymphomas are relatively uncommon and represent less than 1% of all head and neck malignancies. Nowadays, they are regarded as consisting of two distinct subgroups, characterised by phenotype, location, prognosis and treatment. Lymphomas of the B-Cell phenotype are the most frequent type found in the paranasal sinuses. They are less aggressive and carry a relatively better prognosis. T/NK-Cell lymphomas are mostly found in the nasal cavity. They are more aggressive and carry a relatively worse prognosis. We present a case of a 65-year-old patient, who complained with unilateral right-sided nasal obstruction associated with a sensation of right aural fullness. CT scan demonstrated opacity of the posterior ethmoid and sphenoid sinuses on the right side, with evidence of erosion of the anterior wall of the sphenoid. Nasal endoscopy revealed a smooth purple mass, arising from the right superior meatus, which bled on contact, and which was subsequently shown to be, on histological assessment, a malignant high grade lymphoma, non-hodgkin's B-cell phenotype. Following a discussion of the case we will present a review of these tumours, which have a poor overall prognosis, focusing on epidemiology, sites of origin, symptoms, investigation and management.- - - - - - - - - - ranking = 1keywords = cavity (Clic here for more details about this article) |
4/31. Choanal polyp of sphenoidal origin.Sphenochoanal polyp is a rare entity which originates in the sphenoid sinus cavity and extends into the choana via the ostium. It presents in a similar manner to the more common antrochoanal polyp. Radiological examination is necessary to differentiate between these two types. We present a case of sphenochoanal polyp and review the clinical, radiological and pathological features. The role of endoscopic sinus surgery is emphasised.- - - - - - - - - - ranking = 1keywords = cavity (Clic here for more details about this article) |
5/31. Coexistence of benign schwannoma and lymphoma in a nasal polyp.The existence of a combined benign schwannoma and lymphoma presenting as a nasal polyp has not been described in the English literature. We are reporting this rare combination in a 50-year-old male whose presenting symptoms were nasal obstruction, nasal deformity and headache. Examination of the left nasal cavity revealed a mass which was confined to the nose on computed tomography (CT) scan examination. Histopathology of the mass revealed a major component to be a benign schwannoma and a minor component a large B-cell lymphoma.- - - - - - - - - - ranking = 1keywords = cavity (Clic here for more details about this article) |
6/31. Choanal polyp originating from the nasal septum: a case report.Almost all nasal polyps originate from the mucosa of the lateral walls of the nasal cavity or from the paranasal sinuses. A choanal polyp is the intranasal portion of a cyst that has arisen from the wall of the maxillary sinus near the ostium. Medially based polyps, such as those that arise from the nasal septum, are rare. The literature cites a wide range of incidence rates for polyps originating from this structure, but choanal extension of this type of polyp is extremely unusual. This report describes a polyp that arose from the superior aspect of the posterior nasal septum and extended through the choana into the nasopharynx. The histology of this choanal lesion was typical of nasal polyps, but the site of origin is rare. The ethiopathogenesis of nasal polyps with its common location remains controversial so it is difficult to speculate what mechanism triggered the development of this lesion on the nasal septum. Some form of local inflammation may have induced choanal polyp formation at this atypical site.- - - - - - - - - - ranking = 1keywords = cavity (Clic here for more details about this article) |
7/31. Unusual clinical manifestation of virus-associated hemophagocytic syndrome.A 22-year-old man presented with bilateral painless cervical lymphadenomegaly, difficulties in nasal breathing and bilateral conductive hearing loss. Rhinoscopy and computer tomography disclosed mucosal polyps in the nasal cavity and a polypoid soft mass almost completely filling the whole nasal cavity and the paranasal sinuses. Thoracic and abdominal computer tomography showed mild hepatosplenomegaly and a solitary round lesion in the right lung. No fever or abnormal laboratory parameters were detected. The biopsy from the nasal polypoid lesions and from the cervical lymph nodes showed extensive proliferation of histologically benign erythrophagocytic histiocytes. The diagnosis of virus (Epstein-Barr virus)-associated hemophagocytic histiocytosis was confirmed by immunohistochemical reactions, by polymerase chain reaction, and by Epstein-Barr-Encodes (Early)-rna in situ hybridization. This case illustrates an unusual clinical manifestation of virus-associated hemophagocytic histiocytosis presenting as mucosal polyps of the upper respiratory tract.- - - - - - - - - - ranking = 2keywords = cavity (Clic here for more details about this article) |
8/31. Respiratory epithelial adenomatoid hamartoma associated with nasal polyposis.hamartoma is a rare, non-neoplastic tumor characterized by an abnormal mixture of tissues, which are indigenous to the region. They are rare in the nasal cavity. We report a 79-year-old woman with an adenomatoid hamartoma in the left nasal cavity associated with nasal polyposis. This association supports the hypothesis that inflammation is one of the factors that induce the development of a hamartoma. Functional endoscopic sinus surgery was performed to completely remove it, and this lesion was found to have arisen from the lateral nasal wall. It is an unusual localization because the most common site in the nasal cavity is the nasal septum, particularly the posterior aspect. Limited but complete surgical resection is the treatment of choice. Although adenomatoid hamartoma arising from the sinonasal tract is very rare, head and neck surgeons should be aware of this pathological entity as a differential diagnosis for inverted papilloma and adenocarcinoma. Misinterpretation of these lesions as a true neoplasm may result in unnecessarily aggressive surgery for this benign lesion.- - - - - - - - - - ranking = 3keywords = cavity (Clic here for more details about this article) |
9/31. Rosai-Dorfman disease revealed in the upper airway: a case report and review of the literature.Rosai-Dorfman disease (RDD) is a systemic disease and its etiology is not well understood. It is a very rare but established disease. We report a case of RDD diagnosed in the upper airway that became a life-threatening condition because of the stricture of the subglottic space. A 49-year-old female complained of nasal obstruction, hoarseness and lacrimation. After evaluation following by fiberscopic examination and CT scanning of the head and neck, sinusitis and laryngeal masses were detected. Endoscopic sinus surgery and endolaryngeal microsurgery were performed simultaneously. The masses in the nasal cavity and larynx showed the same histological findings. Proliferative large histiocytes with voluminous clear cytoplasm and rounded nuclei, and lymphophagocytosis known as emperipolesis are the characteristic features of RDD. In this case, extranodal manifestations in the subglottic space gradually emerged postoperatively. tracheotomy was performed to ensure an airway and prevent suffocation. An extensive treatment is not required in most patients with RDD, however, some patients who have extranodal manifestations involving the airway may detoriorate into a life-threatening condition.- - - - - - - - - - ranking = 1keywords = cavity (Clic here for more details about this article) |
10/31. Nasal angiomyolipoma.Angiomyolipomas (AMLs) are hamartomatous lesions containing smooth muscle, vasculature and mature adipose tissue. AML occurs most frequently in the kidneys, with the liver being the second commonest site of involvement. Other localizations for AML are extremely rare and, to our knowledge, only six cases of AML of the nasal cavity have been reported to date. Our case involved a 52-year-old male who presented with a history of snoring and obstruction of the left nasal cavity. physical examination revealed a 3-cm polypoid mass in the left nasal cavity, which was excised surgically. Histopathologic examination revealed that the lesion was composed of smooth muscle bundles, mature adipose tissue and blood vessels of different sizes. No epitheloid smooth muscle cells were observed and HMB-45 staining was negative. In conclusion, although nasal AML is a rare lesion, it should be considered in the differential diagnosis of polypoid nasal masses, especially when the mass occurs unilaterally.- - - - - - - - - - ranking = 3keywords = cavity (Clic here for more details about this article) |
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