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Houston GD. Oral pathology case of the quarter. JOURNAL - OKLAHOMA DENTAL ASSOCIATION 2001; 91:42-4. [PMID: 11314179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Houston GD, Bolton HC. Quantum field theoretical treatment of a dynamical model of the ferroelectric KDP. II. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3719/4/17/019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Houston GD. Case of the month. Pyogenic granuloma. JOURNAL - OKLAHOMA DENTAL ASSOCIATION 2000; 89:21-2, 28. [PMID: 10726495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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Houston GD. Oral pathology. May 1998 case of the month. Granular cell tumor. JOURNAL - OKLAHOMA DENTAL ASSOCIATION 1999; 89:13-6. [PMID: 10596628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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Abstract
The sinonasal undifferentiated carcinoma (SNUC) is an aggressive and rare neoplasm arising in the nasal cavity and the paranasal sinuses. To date, over 50 cases of histologically proven SNUCs have been reported since its original description in 1986. Presenting symptoms include facial pain, nasal obstruction, diplopia, epistaxis, proptosis, and periorbital swelling. The histologic features of this neoplasm include cohesive cells arranged in nests, ribbons, and trabeculae. The cells exhibit hyperchromatic nuclei and a high nuclear to cytoplasmic ratio. A brisk mitotic rate, tumor necrosis, and vascular invasion are prominent features. Confirming the diagnosis of SNUC at the light microscopic level can be challenging, since the microscopic differential diagnosis includes olfactory neuroblastoma, rhabdomyosarcoma, undifferentiated nasopharyngeal carcinoma (lymphoepithelioma), malignant lymphoma, malignant melanoma, and neuroendocrine (small cell undifferentiated; oat cell) carcinoma. Sinonasal undifferentiated carcinoma can be differentiated from these other neoplasms by correlating clinical, light microscopic, histochemical, immunohistochemical, and ultrastructural characteristics. Aggressive, multimodal therapy can provide the best opportunity for local control of this neoplastic process, but the optimal treatment has yet to be determined.
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Martin GC, Brown JP, Eifler CW, Houston GD. Oral leukoplakia status six weeks after cessation of smokeless tobacco use. J Am Dent Assoc 1999; 130:945-54. [PMID: 10422398 DOI: 10.14219/jada.archive.1999.0335] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND This study evaluated the prevalence and risk of developing oral leukoplakia in smokeless tobacco, or ST, users and the response of these leukoplakic lesions after six weeks of involuntary tobacco cessation. U.S. Air Force basic military training provided an environment of a mandatorily tobacco-free setting. METHODS The authors designed their investigation as a case control study with a nested cohort study. The principal investigator (G.C.M.) conducted oral examinations of 3,051 male U.S. Air Force basic military trainees. Using a questionnaire, he obtained detailed information concerning subjects' ST use patterns before basic training. Clinical photos were taken of all leukoplakic lesions identified in ST users at the initial examination and again six weeks later. RESULTS Of the 3,051 male trainees examined (mean age = 19.5 years), 9.9 percent (302/3,051) were identified as current ST users. Among current ST users, 39.4 percent (119/302) had leukoplakia vs. 1.5 percent (42/2,749) of nonusers of ST (odds ratio = 41.9, 95 percent confidence interval = 28.1-62.6). At the end of the involuntary cessation of tobacco use, 97.5 percent of these leukoplakic lesions had complete clinical resolution. The type of ST used (snuff vs. chewing tobacco), amount used (cans or pouches per day), length of use (months), number of days since last use and brand of snuff used were significantly associated with the risk of developing leukoplakic lesions among ST users. CONCLUSIONS The important new finding from this investigation is that if a young, otherwise healthy man with leukoplakic lesions stops using tobacco for six weeks, most of his leukoplakic lesions will resolve clinically. Use of ST, specifically snuff, is strongly associated with development of oral leukoplakia in young adult men. CLINICAL IMPLICATIONS The clinician can use these findings in deciding when to perform biopsies on leukoplakic lesions associated with ST use. This information also should be used to assist ST users in quitting this addictive behavior.
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Roofe SB, Boyd EM, Houston GD, Edgin WA. Squamous cell carcinoma arising in the epithelial lining of a dentigerous cyst. South Med J 1999; 92:611-4. [PMID: 10372856 DOI: 10.1097/00007611-199906000-00011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The dentigerous cyst is a common oral lesion arising as a developmental anomaly during amelogenesis. In rare instances, the epithelial lining of these cysts may give rise to squamous cell carcinoma (SCC). Fewer than 50 cases of this rare entity have been reported in the world literature to date. We present an additional case of SCC arising in a dentigerous cyst with a rationale for our treatment approach. In addition, we offer a review of the literature and a review of the clinical, histologic, and radiographic findings associated with this finding. We discuss epidemiologic data and treatment options.
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Houston GD. Sinonasal undifferentiated carcinoma: report of two cases and review of the literature. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 1998; 85:185-8. [PMID: 9503454 DOI: 10.1016/s1079-2104(98)90424-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Sinonasal undifferentiated carcinoma is a rare, highly aggressive neoplasm of the paranasal sinuses. Approximately 40 cases of this neoplasm have been reported to date. Microscopically, this neoplasm is composed of medium-sized cohesive cells arranged in nests, ribbons, and trabeculae having hyperchromatic nuclei, often with prominent nucleoli. A high mitotic rate, tumor necrosis, and prominent vascular invasion are conspicuous features. Squamous or glandular differentiation is not observed at the light-microscopic level. It appears to be a unique, distinctive clinicopathologic process that must be distinguished microscopically from other, less aggressive "round cell" sinonasal neoplasms. In this article, two additional cases of this neoplastic process are reviewed. Aggressive, multimodal treatment may offer the best chance for local control, palliation, and, ultimately, survival of the patient. The optimal treatment of SNUC, however, has yet to be determined.
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Houston GD, Fowler CB. Extraosseous calcifying epithelial odontogenic tumor: report of two cases and review of the literature. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 1997; 83:577-83. [PMID: 9159818 DOI: 10.1016/s1079-2104(97)90123-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this study two additional cases of extraosseous calcifying epithelial odontogenic tumor are reported, both of which exhibited a prominent clear cell component. The clinical and histopathologic findings of these two cases are compared with those of the nine reported cases from the English language literature. The age range for the 11 cases was 12 to 64 years with a mean age of 34.4 years at the time of diagnosis. Six of the tumors involved female patients and five involved male patients. Seven cases were located on the mandibular gingiva with the remaining four cases involving the maxillary gingiva. On microscopic evaluation, six of the lesions exhibited a predominant clear cell component. Appropriate management of the extraosseous calcifying epithelial odontogenic tumor consists of simple excision. No recurrences have been recorded.
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Wenig BM, Vinh TN, Smirniotopoulos JG, Fowler CB, Houston GD, Heffner DK. Aggressive psammomatoid ossifying fibromas of the sinonasal region: a clinicopathologic study of a distinct group of fibro-osseous lesions. Cancer 1996. [PMID: 8630892 DOI: 10.1002/1097-0142(19951001)76:7<1155::aid-cncr2820760710>3.0.co;2-p] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Psammomatoid ossifying fibromas represent a unique subset of fibro-osseous lesions of the sinonasal tract. They have distinctive histomorphologic features and a tendency toward locally aggressive behavior, including invasion and destruction of adjacent anatomic structures. METHODS Seven cases of psammomatoid ossifying fibromas of the sinonasal tract were identified in the files of the Otolaryngic Tumor Registry at the Armed Forces Institute of Pathology. Medical records, including the clinical history, location of the lesions, radiographs, treatment, and follow-up were reviewed in each case. Follow-up information was available in all of the cases. RESULTS Four of the patients were male and three were female. The patient's ages ranged from 5 to 54 years (median age, 33 years). Symptoms included facial swelling, nasal obstruction, pain, sinusitis, headache, and proptosis. Radiographic studies confirmed the presence of an osseous and/or soft tissue mass varying in appearance from well demarcated without invasion or erosion to invasive with bone erosion and intracranial extension. Sites of involvement included the nasal cavity and all paranasal sinuses, particularly the ethmoid and maxillary sinuses. Often, more than one sinus was involved and extension of disease included involvement of the orbit, nasopharynx, palate, and anterior cranial fossa. The histologic appearance was characterized by the presence of small mineralized (psammomatoid) bodies admixed with a cellular stroma with a variable amount of myxomatous material and scattered giant cells. Confusion with other osseous and soft tissue tumors may occur resulting in too limited or too aggressive management. En bloc surgical excision is the treatment of choice and may prove curative. Aggressive behavior with recurrence(s) or invasion into adjacent structures occurred. At the time of this writing, the patients are alive over follow-up periods ranging from 6 months to 7 years. CONCLUSIONS Gnathic and midfacial fibro-osseous proliferations are a diverse group of lesions. A subset of these fibro-osseous lesions with predilection for the sinonasal tract were identified. These lesions are characterized by their distinctive histology, including psammomatoid ossicles and their locally aggressive growth. Complete surgical removal is the treatment of choice.
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Wiseman JB, Arriaga MA, Houston GD, Boyd EM. Facial Paralysis and Inflammatory Pseudotumor of the Facial Nerve in a Child. Otolaryngol Head Neck Surg 1995; 113:826-8. [PMID: 7501405 DOI: 10.1016/s0194-59989570033-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Wiseman JB, Arriaga MA, Houston GD, Boyd EM. Facial paralysis and inflammatory pseudotumor of the facial nerve in a child. Otolaryngol Head Neck Surg 1995. [PMID: 7501405 DOI: 10.1016/s0194-5998(95)70033-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Wenig BM, Vinh TN, Smirniotopoulos JG, Fowler CB, Houston GD, Heffner DK. Aggressive psammomatoid ossifying fibromas of the sinonasal region: a clinicopathologic study of a distinct group of fibro-osseous lesions. Cancer 1995; 76:1155-65. [PMID: 8630892 DOI: 10.1002/1097-0142(19951001)76:7<1155::aid-cncr2820760710>3.0.co;2-p] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Psammomatoid ossifying fibromas represent a unique subset of fibro-osseous lesions of the sinonasal tract. They have distinctive histomorphologic features and a tendency toward locally aggressive behavior, including invasion and destruction of adjacent anatomic structures. METHODS Seven cases of psammomatoid ossifying fibromas of the sinonasal tract were identified in the files of the Otolaryngic Tumor Registry at the Armed Forces Institute of Pathology. Medical records, including the clinical history, location of the lesions, radiographs, treatment, and follow-up were reviewed in each case. Follow-up information was available in all of the cases. RESULTS Four of the patients were male and three were female. The patient's ages ranged from 5 to 54 years (median age, 33 years). Symptoms included facial swelling, nasal obstruction, pain, sinusitis, headache, and proptosis. Radiographic studies confirmed the presence of an osseous and/or soft tissue mass varying in appearance from well demarcated without invasion or erosion to invasive with bone erosion and intracranial extension. Sites of involvement included the nasal cavity and all paranasal sinuses, particularly the ethmoid and maxillary sinuses. Often, more than one sinus was involved and extension of disease included involvement of the orbit, nasopharynx, palate, and anterior cranial fossa. The histologic appearance was characterized by the presence of small mineralized (psammomatoid) bodies admixed with a cellular stroma with a variable amount of myxomatous material and scattered giant cells. Confusion with other osseous and soft tissue tumors may occur resulting in too limited or too aggressive management. En bloc surgical excision is the treatment of choice and may prove curative. Aggressive behavior with recurrence(s) or invasion into adjacent structures occurred. At the time of this writing, the patients are alive over follow-up periods ranging from 6 months to 7 years. CONCLUSIONS Gnathic and midfacial fibro-osseous proliferations are a diverse group of lesions. A subset of these fibro-osseous lesions with predilection for the sinonasal tract were identified. These lesions are characterized by their distinctive histology, including psammomatoid ossicles and their locally aggressive growth. Complete surgical removal is the treatment of choice.
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Stamatakos MD, Houston GD, Fowler CB, Boyd E, Solanki PH. Diagnosis of ameloblastoma of the maxilla by fine needle aspiration. A case report. Acta Cytol 1995; 39:817-20. [PMID: 7631563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Ameloblastoma is a tumor of odontogenic epithelium that occurs in the jaws. We describe a case of an ameloblastoma of the maxilla that was diagnosed by fine needle aspiration cytology. The patient presented with a mass in the left maxillary sinus. Cytologic examination of the aspirate material showed numerous sheets of tightly packed basaloid cells. Several sheets of cells were surrounded by a row of columnar cells, with the nuclei oriented away from the basement membrane (peripheral palisading). Histologic examination of the resection specimen confirmed the presence of an ameloblastoma of the maxilla.
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Arriaga MA, Carrier D, Houston GD. False-Positive Magnetic Resonance Imaging of Small Internal Auditory Canal Tumors: A Clinical Radiologic, and Pathologic Correlation Study. Otolaryngol Head Neck Surg 1995; 113:61-70. [PMID: 7603724 DOI: 10.1016/s0194-59989570146-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Magnetic resonance imaging with gadolinium facilitates the early diagnosis of internal auditory canal tumors at a small enough stage to permit increasing application of hearing preservation surgical techniques. Surgeons report successful removal of tumors as small as 3 mm, which are diagnosed with enhanced magnetic resonance imaging. A retrospective study was performed to determine the risk of false-positive “tumor” diagnosis with enhanced magnetic resonance imaging. We reviewed the imaging records, office notes, and surgical records of 112 consecutive “tumors” involving the internal auditory canal treated by the Wilford Hall USAF Medical Center Neurotology Service between July 1991 and July 1994. Two categories of false-positive magnetic resonance imaging were Identified: (1) surgically confirmed absence of internal auditory canal neoplasm and (2) spontaneous resolution of the internal auditory canal lesions on subsequent, enhanced magnetic resonance images. Overall, eight false-positive scans were identified. Three were surgically confirmed as false-positive, and five resolved on subsequent Imaging studies. All cases were smaller than 6 mm and involved the distal internal auditory canal (fundus). The surgically confirmed cases were approached through a middle fossa technique with successful hearing preservation. The overall rate of surgical false-positive results was 3.5% (3 cases in 86 surgeries). However, the overall false-positive rate for intracanalicular “tumors” was 32% (8 cases in 25 intracanalicular lesions). Although hearing preservation is more likely in small lesions, the surgeon must consider the possibility that an internal auditory canal lesion smaller than 6 mm may actually represent a nonneoplastic process. Enhancing lesions limited to the internal auditory canal fundus may be treated by reimaging the patient in 6 months after the first image rather than by prompt surgical exploration.
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McDaniel RK, Houston GD. Juvenile nasopharyngeal angiofibroma with lateral extension into the cheek: report of case. J Oral Maxillofac Surg 1995; 53:473-6. [PMID: 7699508 DOI: 10.1016/0278-2391(95)90729-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Houston GD, Brown FH. Differential diagnosis of the palatal mass. COMPENDIUM (NEWTOWN, PA.) 1993; 14:1222-4, 1226, 1228-31; quiz 1232. [PMID: 8118828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
It is well understood that the palatal mass can pose a difficult diagnostic dilemma for the clinician. The differential diagnosis of the palatal mass includes the palatal abscess, benign and malignant salivary gland neoplasms, the benign neural tumors, and the traumatic or irritation fibroma. The lesions have many characteristics in common and may appear clinically indistinguishable. Emphasis is placed on the importance of obtaining a thorough, comprehensive health and dental history and collecting relevant laboratory information. Ultimately, a biopsy of the palatal mass may be necessary to render a definitive diagnosis and determine the optimal treatment and management of the patient.
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Houston GD, Brown FH. Differential diagnosis of localized soft-tissue tumefactions of the tongue. COMPENDIUM (NEWTOWN, PA.) 1992; 13:912, 914, 916-8. [PMID: 1423403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Brown FH, Ogletree RC, Houston GD. Pneumoparotitis associated with the use of an air-powder prophylaxis unit. J Periodontol 1992; 63:642-4. [PMID: 1507043 DOI: 10.1902/jop.1992.63.7.642] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A case reporting barotrauma to the parotid gland secondarily to the use of an air-powder prophylaxis unit is presented. Air pressure associated with these units usually exceeds that for air/driven turbines or air/water dental syringes, yet the reported incidence of iatrogenic trauma is very low. Improper angulation in the use of these instruments may result in serious sequellae. Differential diagnosis and physical examination following trauma to the parotid is discussed.
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Abstract
Smoker's melanosis is a benign pigmentation of the oral mucosa, predominantly observed on the attached anterior mandibular gingiva and interdental papillae. These macular lesions are independent of genetic factors, therapeutic medication usage, and various systemic disorders. As a group they are often seen after the third decade of life. Due to the onset in adulthood and the progressive darkening, malignant melanoma must be ruled out. A review of the literature and a case report of this interesting and unique entity is presented.
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Brannon RB, Houston GD. Bilateral Traumatic Bone Cysts of the Mandible: An Unusual Clinical Presentation. Mil Med 1991. [DOI: 10.1093/milmed/156.1.20] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Brannon RB, Houston GD. Bilateral traumatic bone cysts of the mandible: an unusual clinical presentation. Mil Med 1991; 156:20-2. [PMID: 1900111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
This case report describes an unusual clinical presentation of bilateral traumatic bone cysts of the mandible. These lesions presented clinically as bilateral dentigerous cysts associated with the mandibular third molar teeth. Because of this unusual presentation, a combination of clinical examination, thorough history, radiographic studies, surgical exploration, and microscopic evaluation was necessary in order to render a definitive diagnosis on this case. Knowledge and awareness of these features are important to assist in the initial diagnosis as well as patient management and follow up.
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Brown FH, Houston GD. Differential diagnosis of localized tumors of the gingiva. COMPENDIUM (NEWTOWN, PA.) 1990; 11:700, 702-4, 706. [PMID: 2088617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Localized tumors arising from the periodontal structures are commonly seen in the oral cavity. Although not a daily occurrence, these tumors will probably be encountered by all practitioners during their professional lives. The majority of localized tumors arising from the periodontal structures are benign, but early recognition and treatment are imperative to prevent invasion and destruction of the surrounding structures.
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Cornelius JD, Hoyt RA, Houston GD. Ameloblastoma of the Mandible: Report of Extensive Destruction within 4 Years. Mil Med 1990. [DOI: 10.1093/milmed/155.9.435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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