1/17. Solitary fibrous tumor of the oral cavity: report of a case.A case of benign solitary fibrous tumor of the oral cavity is reported. The tumor occurred in the buccal mucosa of a 34-year-old woman. The surgically removed tumor was 1.5 x 1.2 x 1.0 cm in size and well circumscribed. Histologically, the tumor was composed of spindle-shaped cells that were predominantly arranged haphazardly. hemangiopericytoma-like areas and collagenous areas were also noted. Immunohistochemically, the tumor cells were positive for CD34 and vimentin. To our knowledge, this is only the second report of solitary fibrous tumor involving the oral cavity.- - - - - - - - - - ranking = 1keywords = oral cavity, cavity (Clic here for more details about this article) |
2/17. Solitary fibrous tumor of the oral cavity: an uncommon location for a ubiquitous neoplasm.Solitary fibrous tumor is an uncommon soft tissue tumor initially reported in the pleura but recently described in other sites of the body. To date, only 5 examples of oral solitary fibrous tumor have been reported. Here, we describe 2 additional cases of this tumor in the oral cavity. The tumors were composed of small to medium-sized spindle cells with bland cytologic features; these cells were haphazardly arranged in highly cellular sheets or ill-formed fascicles as well as in hypocellular areas with hyalinized blood vessels. Both tumors contained blood vessels with a hemangiopericytomalike appearance and expressed vimentin, CD34, and CD99. One case was also strongly positive for bcl-2. The diagnosis of solitary fibrous tumor may be difficult inasmuch as it shares a number of histologic features with other soft tissue tumors. awareness of its occurrence in the oral cavity is important so that confusion with other spindle cell neoplasms can be avoided.- - - - - - - - - - ranking = 1keywords = oral cavity, cavity (Clic here for more details about this article) |
3/17. Solitary fibrous tumor of the skin.Solitary fibrous tumor (SFT) is an uncommon mesenchymal tumor that typically arises in the pleural cavity. Comprised of spindled cells characteristically arranged in diverse architectural patterns, SFT histologically simulates a variety of benign and malignant mesenchymal tumors. The diagnosis of SFT has been refined by the availability of newer immunohistochemical markers such as CD-34 and factor xiiia, facilitating the identification of SFTs arising in multiple extrapleural sites, including the skin. We describe three cases of primary cutaneous SFT, review the literature, and discuss the histologic and immunohistochemical differential of other cutaneous tumors that SFT can mimic.- - - - - - - - - - ranking = 0.015981567596215keywords = cavity (Clic here for more details about this article) |
4/17. A solitary fibrous tumor in the perianal region with a 13-year follow-up: report of a case.A case of a solitary fibrous tumor (SFT) of the perianal region in a 62-year-old man is reported herein. The patient had undergone an abdominoperineal excision of the rectum for an anorectal tumor 13 years previously, and had been referred to our hospital for a perineal mass. Computerized tomography and angiography revealed a markedly hypervascular tumor measuring 11 x 8 cm in size in the pelvic cavity. After preoperative radiotherapy (total 58 Gy) and the embolization of the feeding arteries, he underwent an en bloc excision of the tumor. Microscopically, the tumor was composed of spindle shaped cells with a "patternless" arrangement in a collagenous background. There was immunohistochemical evidence that these cells were strongly positive for CD34, thus suggesting the tumor to be SFT. The previously resected anorectal tumor showed similar histological and immunohistochemical findings. The patient's recovery was uneventful.- - - - - - - - - - ranking = 0.015981567596215keywords = cavity (Clic here for more details about this article) |
5/17. Solitary fibrous tumour of the oral cavity: clinicopathological and immunohistochemical characterization of three cases.Solitary fibrous tumour (SFT) is an uncommon mesenchymal neoplasm rarely located in the oral cavity. To characterize further oral SFT, we describe three new cases. Each tumour originated in the buccal mucosa of a middle-aged/elderly patient. Histological examination showed well-circumscribed tumours with densely cellular areas alternating with hypocellular areas in a variedly collagenous, vascular stroma. mast cells were abundant. The spindle-shaped, neoplastic cells immunostained strongly for CD34 antigen and vimentin and weakly for bcl-2, but not for epithelial cell markers, alpha-smooth muscle actin, or neurofilament or S-100 proteins. Compatible with the virtual absence of mitoses and of marked nuclear atypia, the overall frequency of proliferating cells expressing Ki-67 was low. The expression of CD34 was useful in the differential diagnosis. The consistent location in the cheek and expansion of one tumour after local trauma does not preclude a traumatic element in the development of oral SFT.- - - - - - - - - - ranking = 0.83333333333333keywords = oral cavity, cavity (Clic here for more details about this article) |
6/17. Solitary fibrous tumour of the oral cavity: report of two cases.The solitary fibrous tumour is an uncommon, benign neoplasm of adults involving the pleura. It is now recognised to occur in extrapleural sites. Only a limited number of cases have been reported in the oral cavity. This paper reports two further cases, which presented as clinically benign masses in the palate and buccal mucosa respectively.- - - - - - - - - - ranking = 0.83333333333333keywords = oral cavity, cavity (Clic here for more details about this article) |
7/17. Solitary fibrous tumour of the face: a rare case report.Solitary fibrous tumour is a rare mesenchymal neoplasm that most commonly involves the pleura. The diagnosis of solitary fibrous tumour is primarily histological. It consists of histological and positive immunohistochemical findings of CD-34 and vimentin. Recently, solitary fibrous tumour has been reported to occur in extrapleural soft tissues, such as the orbit, nasal cavity, abdominal cavity, parotid gland, scalp and neck. In an extensive review of the literature, we found no reports of solitary fibrous tumour arising in the facial soft tissue, other than in the parotid gland. This rare location of an uncommon lesion can lead to a confusing diagnosis. We report a case of solitary fibrous tumour originating in the temporal region of the face, and call for awareness of this tumour among plastic surgeons.- - - - - - - - - - ranking = 0.031963135192431keywords = cavity (Clic here for more details about this article) |
8/17. Solitary fibrous tumor in the mental region.Solitary fibrous tumor (SFT) is a rare, benign, soft tissue tumor that most commonly occurs in the pleura; however, it has recently been described in other sites of the body. To date, eight examples of oral SFT have been reported. This paper is a description of the first case of an SFT occurring as a soft tissue tumor in the mental region. Histologically, the tumor was composed predominantly of rather uniform spindle-shaped fibroblastic cells arranged in vague fascicles or in a haphazard fashion, intermingled with abundant collagen fibers. Immunohistochemically, the tumor cells were positive for CD34 and vimentin, and weakly positive for muscle actin and alpha-smooth muscle actin. The diagnosis of SFT may be difficult as this tumor shares a number of histological features with other soft tissue tumors. awareness of its occurrence in the oral cavity is important so that confusion with other spindle cell neoplasms can be avoided.- - - - - - - - - - ranking = 0.16666666666667keywords = oral cavity, cavity (Clic here for more details about this article) |
9/17. Solitary fibrous tumour of the mouth: report of two cases involving the tongue and cheek.We describe two additional cases of solitary fibrous tumour (SFT) affecting the mouth. SFT is very uncommon in the oral cavity and we found only 14 cases reported in the literature. Our two cases were well circumscribed, slow growing tumours that, after surgical removal, did not recur. Case 1 was a 3 cm nodule on the right cheek. Hypo and hypercellular adjacent areas were mainly patternless, and the stroma was formed by thin collagen fibrils. Case 2 was a 4.8 cm mass in the anterior portion of the tongue. Microscopically it was formed by spindle cells embedded in a vascularized sclerotic collagen matrix. Some areas were hypercellular with scarce collagen fibrils. The immunohistochemical findings were similar in both cases, with strong immunoreactivity for vimentin, CD34, bcl-2, focal positivity for Ki-67 and negativity for other immunomarkers. Based on these clinical, microscopical and immunohistochemical features the final diagnosis of these two cases was SFT. diagnosis of SFT is difficult and, although uncommon, it should be considered in the differential diagnosis of oral soft tissue tumours.- - - - - - - - - - ranking = 0.16666666666667keywords = oral cavity, cavity (Clic here for more details about this article) |
10/17. A rare case of solitary fibrous tumor of the nasal cavity.Solitary fibrous tumor (SFT) arises in the pleura and less commonly in extrapleural sites. SFT can be found in various head and neck sites. SFTs of the nasal cavity and paranasal sinuses are extremely rare with only ten previously reported cases in the world literature. This case report presents an additional case of SFT of the nasal cavity underlining the benign pattern and the bleeding tendency of nasal SFT, that surgeons managing these tumors should be aware of. Diagnostic procedure, clinical and histopathological findings as well as immunoreactivity of this tumor are discussed, with a review of the current literature.- - - - - - - - - - ranking = 0.095889405577292keywords = cavity (Clic here for more details about this article) |
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