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Sagar M, Sunar D, Konkimalla A, Das S. Rare presentation of solitary fibrous tumour in the floor of the mouth. BMJ Case Rep 2024; 17:e258608. [PMID: 38649243 PMCID: PMC11043717 DOI: 10.1136/bcr-2023-258608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024] Open
Abstract
A male in his 20s, a tobacco chewer, presented to the outpatient department with a history of painless, slowly progressive swelling in the floor of the mouth. After a thorough history and clinical examination, MRI was done and the tumour was completely excised. Histopathological examination revealed the mass to be a solitary fibrous tumour, confirmed with immunohistochemical markers. On subsequent follow-ups, the patient was found to be asymptomatic with no clinical signs of recurrence.
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Affiliation(s)
- Milind Sagar
- Department of Otorhinolaryngology and Head-Neck Surgery, All India Institute of Medical Sciences, New Delhi, Delhi, India
| | - Diwash Sunar
- Department of Otorhinolaryngology and Head-Neck Surgery, All India Institute of Medical Sciences, New Delhi, Delhi, India
| | - Abhilash Konkimalla
- Department of Otorhinolaryngology and Head-Neck Surgery, All India Institute of Medical Sciences, New Delhi, Delhi, India
| | - Sumanta Das
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, Delhi, India
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2
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Large solitary fibrous tumor of the oral cavity—Report of a case. Pathol Res Pract 2014; 210:1064-7. [DOI: 10.1016/j.prp.2014.09.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 09/01/2014] [Accepted: 09/29/2014] [Indexed: 01/23/2023]
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3
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Satomi T, Hasegawa O, Abukawa H, Kohno M, Enomoto A, Chikazu D, Matsubayashi J, Nagao T. Exceptionally large solitary fibrous tumor arising from the cheek: an immunohistochemical and ultrastructural study with a review of the literature. Med Mol Morphol 2013; 47:108-16. [DOI: 10.1007/s00795-013-0054-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 07/29/2013] [Indexed: 01/07/2023]
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4
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Manor E, Sion-Vardy N, Woldenberg Y, Bodner L. Solitary fibrous tumor of the buccal vestibule: report of two cases. J Maxillofac Oral Surg 2013; 11:323-7. [PMID: 23997485 DOI: 10.1007/s12663-011-0301-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Accepted: 03/02/2010] [Indexed: 10/16/2022] Open
Abstract
Solitary fibrous tumor (SFT) is a rare benign tumor that occurs most frequently in the pleura. It is considered rare in the maxillofacial area. Two new cases of SFT of the buccal vestibule are reported. The previously reported cases of oral SFT are reviewed. The tumors were composed of spindle-shaped cells that were arranged haphazardly and were positive for CD-34, BCL-2, CD-99 and vimentin. Although rare, SFT should be included in the differential diagnosis of oral soft tissue tumors. The clinical presentation and imaging can provide the clinician a better tool for preoperative diagnosis.
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Affiliation(s)
- Esther Manor
- Institute of Human Genetics, Soroka University Medical Center and Ben Gurion University of the Negev, Beer-Sheva, Israel
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5
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Cristofaro MG, Allegra E, Giudice M. Two New Localizations of Solitary Fibrous Tumor in the Italian Population: Parotid Gland and Oral Cavity—Review of the Literature. J Oral Maxillofac Surg 2012; 70:2360-7. [DOI: 10.1016/j.joms.2011.10.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 10/27/2011] [Accepted: 10/28/2011] [Indexed: 12/16/2022]
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6
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O'Regan EM, Vanguri V, Allen CM, Eversole LR, Wright JM, Woo SB. Solitary fibrous tumor of the oral cavity: clinicopathologic and immunohistochemical study of 21 cases. Head Neck Pathol 2009; 3:106-15. [PMID: 19644541 PMCID: PMC2715455 DOI: 10.1007/s12105-009-0111-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Accepted: 03/03/2009] [Indexed: 01/31/2023]
Abstract
We describe clinical, morphologic, and immunohistochemical features of 21 cases of solitary fibrous tumor presenting in the oral cavity. There were 9 male and 12 female patients with a median age of 51 years (range 37-83). The most common locations included the buccal mucosa (the most common site), lip, maxillary or mandibular vestibule and tongue. Histopathologic examination showed well-circumscribed tumors with two well-defined patterns: the classic pattern with densely cellular areas alternating with hypocellular areas in a variably collagenous, vascular stroma and a more uniformly sclerotic pattern with only subtle classic areas. The spindle-shaped neoplastic cells consistently showed immunoreactivity for antibodies directed against CD34. Five of nineteen cases (26%) were reactive for CD99 and 19 of 19 for Bcl-2. Follow-up information was available in 17 cases and averaged 54 months, with no evidence of recurrence or metastasis in any of these patients. Awareness that solitary fibrous tumor may present in the oral cavity is important so that confusion with other spindle cell neoplasms can be avoided. We also briefly describe the differential diagnosis and compare this series, the largest single series of intraoral SFT, to cases previously reported in the literature.
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Affiliation(s)
- Esther M O'Regan
- Oral Maxillofacial Pathology, Dublin Dental School and Hospital, Dublin, Ireland.
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7
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Fusconi M, Ciofalo A, Greco A, Pulice G, Macci M, Mariotti M, Della Rocca C. Solitary Fibrous Tumor of the Oral Cavity: Case Report and Pathologic Consideration. J Oral Maxillofac Surg 2008; 66:530-4. [DOI: 10.1016/j.joms.2007.08.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2006] [Revised: 07/05/2007] [Accepted: 08/30/2007] [Indexed: 10/22/2022]
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8
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Abstract
Sporadic sclerotic fibroma (SF) and solitary fibrous tumor (SFT) arising in the oral cavity are very rare. In this report, we describe two cases of oral pathology, one involving SF and the other involving SFT. Both cases presented with well- circumscribed, firm nodules with similar gross findings. However, the histologic findings of the SF and SFT showed rather distinct features. The SF was composed of hyalinized sclerotic collagen bundles arranged in a whorled pattern, whereas the SFT was formed by spindles cells arranged in hypo- and hypercellular areas. The immunohistochemical findings were similar in both cases; there was positivity for vimentin, CD34, and CD99, but bcl-2 positivity was only seen in the SFT. Although their histopathologies are similar, SF and SFT should be considered in the differential diagnosis of soft tissue tumors in the oral cavity.
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Affiliation(s)
- Ju-Han Lee
- Department of Pathology, Ansan Hospital, Medical College, Korea University, Ansan, Korea
| | - Jung-Suk An
- Department of Pathology, Ansan Hospital, Medical College, Korea University, Ansan, Korea
| | - Eung Seok Lee
- Department of Pathology, Ansan Hospital, Medical College, Korea University, Ansan, Korea
| | - Soon-Young Kwon
- Department of Otolaryngology-Head and Neck Surgery, Ansan Hospital, Medical College, Korea University, Ansan, Korea
| | - Young-Sik Kim
- Department of Pathology, Ansan Hospital, Medical College, Korea University, Ansan, Korea
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9
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Abstract
Solitary fibrous tumors (SFT) are rare, mostly fibroblastic tumors usually situated in the pleura. Extrapleural manifestations have been described. However, the oral cavity is an uncommon localisation of this tumor. We report the very unusual case of an SFT affecting the tongue that could be removed completely because of its clear delineation. Intraoperative incisional biopsies were used to exclude malignancy. For definitive classification of the tumor, additional histopathologic examinations had to be carried out. Because SFT exhibit malignant behavior only in exceptional cases and their recurrence after complete removal has never been encountered, surgery can focus on the preservation of undisturbed function of the tongue.
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Affiliation(s)
- E Nkenke
- Mund-, Kiefer- und Gesichtschirurgische Klinik, Universität Erlangen-Nürnberg, Erlangen.
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10
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Shine N, nor nurul Khasri M, Fitzgibbon J, O'Leary G. Solitary Fibrous Tumor of the Floor of the Mouth: Case Report and Review of the Literature. EAR, NOSE & THROAT JOURNAL 2006. [DOI: 10.1177/014556130608500713] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Solitary fibrous tumor is an uncommon spindle cell neoplasm that is believed to be of mesenchymal origin. Rarely does it originate in the oral cavity, and only 1 case of this lesion in the floor of the mouth has been previously reported. We describe a new case of solitary fibrous tumor arising from the soft tissues of the floor of the mouth.
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Affiliation(s)
- Neville Shine
- From the Department of Otolaryngology–Head and Neck Surgery, South Infirmary–Victoria Hospital, Cork, Republic of Ireland
| | | | - Jim Fitzgibbon
- Department of Pathology, Mercy Hospital, Cork, Republic of Ireland
| | - Gerard O'Leary
- From the Department of Otolaryngology–Head and Neck Surgery, South Infirmary–Victoria Hospital, Cork, Republic of Ireland
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11
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Roccia F, Tavolaccini A, Daniele D, Berrone S. Enlarging lesion of the upper eyelid. J Oral Maxillofac Surg 2006; 64:943-8. [PMID: 16713810 DOI: 10.1016/j.joms.2006.02.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2005] [Indexed: 11/22/2022]
Affiliation(s)
- Fabio Roccia
- Division of Maxillofacial Surgery, San Giovanni Battista Hospital, Turin, Italy.
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12
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Swelam W, Ida-Yonemochi H, Maruyama S, Ikarashi T, Fukuda J, Takagi R, Hayashi T, Saku T. Solitary fibrous tumor of the lower lip involving minor salivary gland components: Report of a case and review of the literature of salivary gland cases. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.ooe.2004.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Abstract
Solitary fibrous tumor is a generally benign spindle-cell neoplasm that has been predominantly described in the visceral pleura and other serosal sites and is extremely rare in the head and neck area. We report the first known case of malignant solitary fibrous tumor of the tongue in a 57-year-old female patient who experienced rapid growth of a longstanding right anterior tongue mass, with associated dysphagia and dysarthria. Magnetic resonance imaging was suggestive of a low-flow vascular malformation not requiring preoperative embolization. The patient underwent partial peroral glossectomy for the excision of the tumor. Final pathology, however, was consistent with solitary fibrous tumor, characterized as malignant by histopathologic criteria, and the patient was returned for re-excision of the close surgical margins. The patient has experienced symptomatic improvement, and she remains free of recurrence 12 months later. All reports of solitary fibrous tumors of the oral cavity and 3 reports of the tongue tumors described in the literature to date represent benign lesions. To our knowledge, this is the first report of a malignant solitary fibrous tumor of the tongue. Presentation, differential diagnosis, criteria for malignancy, treatment, and possible prognostic implications of this rare entity are discussed.
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Affiliation(s)
- Yelizaveta Shnayder
- Department of Otolaryngology, New York University School of Medicine, NY 10016, USA
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14
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Jordan RCK, Regezi JA. Oral spindle cell neoplasms: a review of 307 cases. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 2003; 95:717-24. [PMID: 12789154 DOI: 10.1067/moe.2003.1400] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The infrequent exposure of pathologists to soft tissue spindle cell neoplasms coupled with overlapping histologic patterns can often make diagnosis challenging. We reviewed all nonodontogenic spindle cell neoplasms seen between 1982 and 2002 (86,162 total accessions). Diagnoses were reclassified according to current standards supplemented with immunohistochemistry. Of the 307 neoplasms reviewed (0.36% of total accessions), neural tumors were the most common benign entities, accounting for 21% of total cases. Kaposi's sarcoma was the most common malignancy, accounting for 67% of all cases. Diagnoses were revised for 57 cases. Schwannoma and neurofibroma were most commonly revised to palisaded encapsulated neuroma. There were 8 myofibromas and 1 inflammatory myofibroblastic tumor. There were no oral leiomyomas; that is, all 4 originally reported cases were reclassified as myofibroma, palisaded encapsulated neuroma, and solitary fibrous tumor. With the exception of Kaposi's sarcoma, oral soft tissue sarcomas were rare; most benign lesions were neural in origin. The relatively high prevalence of some tumors, such as myofibroma, likely reflects the use of immunohistochemistry in the diagnosis of spindle cell tumors.
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15
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Veltrini VC, Etges A, Magalhães MHCG, de Araújo NS, de Araújo VC. Solitary fibrous tumor of the oral mucosa--morphological and immunohistochemical profile in the differential diagnosis with hemangiopericytoma. Oral Oncol 2003; 39:420-6. [PMID: 12676265 DOI: 10.1016/s1368-8375(02)00148-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The objective was to investigate two cases of solitary fibrous tumor (SFT) of oral mucosa, emphasizing the differential diagnosis with one case of oral hemangiopericytoma (HPC), in terms of their morphological and immunohistochemical features. Solitary fibrous tumors showed cellularity and collagenization varying from area to area, focal perivascular hyalinization, scattered giant nuclei cells and abundant mast cells throughout the tumor. The hemangiopericytoma case exhibited thin-walled and dilated vessels lined with flat endothelial cells, identified by "staghorn appearance". Tumoral cells of solitary fibrous tumor exhibited immunohistochemical positivity for CD34, as well as endothelial cells. The hemangiopericytoma was positive only in endothelial cells. In solitary fibrous tumor, alpha-smooth muscle actin, h-caldesmon and laminin stained the wall vessels. In hemangiopericytoma, on the other hand, the wall vessels were positive only for laminin, which staining was also observed in perivascular tumoral cells. The morphological and immunohistochemical differences observed allowed us to infer these lesions constitute distinct entities.
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Affiliation(s)
- Vanessa C Veltrini
- Oral Pathology Department, School of Dentistry, University of São Paulo, Av Prof Lineu Prestes, 2227, Cidade Universitária, São Paulo/SP, Brazil
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16
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Ogawa I, Sato S, Kudo Y, Miyauchi M, Sugiyama M, Suei Y, Takata T. Solitary fibrous tumor with malignant potential arising in sublingual gland. Pathol Int 2003; 53:40-5. [PMID: 12558869 DOI: 10.1046/j.1440-1827.2003.01425.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A rare case is described of a solitary fibrous tumor (SFT) with malignant potential arising in the sublingual gland. A 59-year-old man presented with a 4-month history of a slowly enlarging painless mass in the center of the floor of the mouth. The tumor was a well-demarcated, firm mass with a multicystic lesion. The tumor exhibited highly cellular areas of spindle cells with patternless architecture alternating with hypocellular areas. The tumor cells were positive for CD34 and bcl-2 as well as vimentin, and negative for epithelial, myogenic, neurogenic and histiocytic markers. The tumor cells formed multiple satellite nodules around dilated ducts in the multicystic lesion, indicating infiltrative growth. In addition, areas exhibiting higher cellularity with increased mitoses were noticed in the satellite nodules, although cellular atypia was not obvious. These findings led to a final diagnosis of SFT with malignant potential. There has been no recurrence or metastasis for 27 months after the surgery. Solitary fibrous tumor of the salivary gland must be differentiated from various spindle cell neoplasms including myogenic, peripheral nerve sheath, fibroblastic and fibro-histiocytic spindle cell neoplasms, hemangiopericytoma and myoepithelioma. In addition to characteristic morphological features, an immunohistochemical positivity for CD34 and bcl-2 may aid in the diagnosis of SFT.
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Affiliation(s)
- Ikuko Ogawa
- Clinical Laboratory, Hiroshima University Dental Hospital, Hiroshima University, Hiroshima, Japan.
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17
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Yamashita Y, Satoh T, Goto M. Solitary fibrous tumour of the tongue: a case report with immunohistochemical studies. Int J Oral Maxillofac Surg 2002; 31:681-3. [PMID: 12521330 DOI: 10.1054/ijom.2001.0201] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The solitary fibrous tumour (SFT), also known as a localized fibrous mesothelioma, is a neoplasm characterized by the proliferation of capillaries surrounded by masses of round or spindle-shaped cells. SFT has been discovered in many locations, however, it is extremely rare for SFT to be found in the intraoral region. We report here case of SFT arising from the tongue of a 75-year-old woman. To our knowledge, this is the second case reported of SFT originating from the tongue.
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Affiliation(s)
- Y Yamashita
- Department of Oral and Maxillofacial Surgery; Saga Medical School, Nabeshima, Saga, Japan.
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18
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Harada T, Matsuda H, Maruyama R, Yoshimura Y. Solitary fibrous tumours of the lower gingiva: a case report. Int J Oral Maxillofac Surg 2002; 31:448-50. [PMID: 12361084 DOI: 10.1054/ijom.2001.0192] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Solitary fibrous tumours (SFTs) are rare lesions in the oral cavity. Typically they arise in the pleura. We report a lesion occurring in the lower anterior gingiva. In histochemical examination, the spindle-shaped, neoplastic cells stained strongly for CD34 antigen and vimentin, but did not stain for desmin, smooth-muscle actin, muscle actin and S-100 protein. The expression of CD34 antigen and vimentin were useful for the differential diagnosis.
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Affiliation(s)
- T Harada
- Department of Oral and Maxillofacial Surgery, School of Medicine, Shimane Medical University, Izumo, Japan.
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19
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Guerra MFM, Amat CG, Campo FR, Pérez JS. Solitary fibrous tumor of the parotid gland: a case report. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 2002; 94:78-82. [PMID: 12193898 DOI: 10.1067/moe.2002.121990] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The solitary fibrous tumor is traditionally associated with a mesothelial-lined surface. However, any organ with mesenchymal tissue has the potential for developing this tumor; therefore, it has been described in organs not associated with serosal surfaces. We report a case of solitary fibrous tumor of the parotid gland. Microscopically, the tumor showed a patternless arrangement of spindle cells in a fibrotic background and prominent vascular structures of varying size. Tumor cells showed a strong immunoreactivity for CD34 and bcl-2 antigens, but the tissue was negative for antibodies directed against actins, S-100 protein, and cytokeratins. One year after excision, the patient was alive and without evidence of disease.
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20
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Courrier B, Plantier F, Küffer R. Ulcerated mass of the retromolar area. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 2002; 93:635-9. [PMID: 12142867 DOI: 10.1067/moe.2002.124765] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Vargas PA, Alves FA, Lopes MA, Siqueira SAC, Menezes LFC, Aldred VL, Almeida OP. Solitary fibrous tumour of the mouth: report of two cases involving the tongue and cheek. Oral Dis 2002; 8:111-5. [PMID: 11991306 DOI: 10.1034/j.1601-0825.2002.1c769.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
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.
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Affiliation(s)
- P A Vargas
- Department of Oral Pathology, University of Campinas, Dental School, Piracicaba-SP, Brazil.
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22
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Hirano M, Tanuma J, Shimoda T, Sugihara K, Tsuneyoshi M, Kitano M. Solitary fibrous tumor in the mental region. Pathol Int 2001; 51:905-8. [PMID: 11844061 DOI: 10.1046/j.1440-1827.2001.01290.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
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.
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Affiliation(s)
- M Hirano
- Department of Oral Pathology, Kagoshima University Dental School, Sakuraoka, Japan
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23
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Alawi F, Stratton D, Freedman PD. Solitary fibrous tumor of the oral soft tissues: a clinicopathologic and immunohistochemical study of 16 cases. Am J Surg Pathol 2001; 25:900-10. [PMID: 11420461 DOI: 10.1097/00000478-200107000-00008] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We describe the clinicopathologic and immunohistochemical features of 16 solitary fibrous tumors (SFTs) originating within the oral soft tissues. There were 10 women and six men with a mean age at diagnosis of 56 years. In all cases the tumors were slow-growing, asymptomatic, submucosal growths of variable size and duration. The buccal mucosa was involved in 12 cases, and the tongue and lower lip were affected in two cases, respectively. Thirteen tumors developed on the left side of the mouth. Follow-up information was available in 10 cases and averaged 44.7 months, with no evidence of recurrence or metastasis. All 16 tumors were well circumscribed and demonstrated histologic features that were invariably benign. In all cases they were composed of an admixture of alternating hypercellular and hypocellular, collagenous zones; haphazardly arranged, cytologically bland spindle and ovoid cells that in areas were intimately intermixed with collagen; a prominent vasculature; and perivascular hyalinization. Immunohistochemically, the tumors were consistently positive for CD34, bcl-2, factor XIIIa, and vimentin, whereas 75% of the tumors were reactive for CD99. To further define the clinicopathologic profile of intraoral SFT, we include a review of the previously reported cases. We also include a comparison and brief review of the clinicopathologic and immunohistochemical features of other spindle cell tumors of the oral cavity, from which SFTs must be differentiated.
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Affiliation(s)
- F Alawi
- Department of Oral and Maxillofacial Pathology, New York Hospital Medical Center of Queens, Flushing, New York, USA
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24
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Talacko AA, Aldred MJ, Sheldon WR, Richard Hing N. Solitary fibrous tumour of the oral cavity: report of two cases. Pathology 2001. [DOI: 10.1080/00313020126298] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Favia G, Mignogna MD, Piattelli A, Maiorano E. Primary intraoral leiomyosarcoma of the tongue: an immunohistochemical study and review of the literature. Oral Oncol 2000; 36:519-24. [PMID: 11036245 DOI: 10.1016/s1368-8375(00)00044-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Leiomyosarcoma is a relatively uncommon mesenchymal tumor that exhibits smooth-muscle differentiation. We report a new case of leiomyosarcoma involving the tongue of a 67-year-old male. Histologically, the tumor was composed of variably oriented fascicles of spindle-shaped cells with 'cigar-shaped' nuclei and eosinophilic cytoplasm, containing occasional PAS-positive granules. Atypical mitotic figures and necrotic foci were frequently detected. Consistent desmin, alpha-smooth muscle-specific and sarcomeric actin, and vimentin immunoreactivity was demonstrated in the tumor cells, whereas cytokeratins, CD 30, CD 31, CD 34, CD 45, CD 68, EMA, GFAP, HMB 45 and S-100 protein were negative. The patient underwent wide surgical excision of the tumor and is alive and disease-free at a 5-year follow-up. This report emphasizes the difficulties in the differential diagnosis of these uncommon tumors in an intra-oral location.
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