Atlas De Tumores Odontogenicos Pdf
RESULTS In 804 cases FNAC established or documented the initial diagnosis whereas in 198 cases it confirmed suspected recurrences. Definitive histologic diagnosis was established in 809 of the 1022 cases after surgical treatment and the histologic diagnoses were compared with preoperative FNAC results. In 20 cases the cytologic material was considered unsatisfactory and therefore the cytologic diagnosis was impossible to establish. In 12 of these cases diagnosis was made based on histologic examination after surgery. Malignancy was found in three of the latter cases. In the total number of 1022 cases there were 18 false‐negative and 2 false‐positive cytologic results. In another 19 cases a difference in the histologic type of the lesion was found.
Download extra praise. Ia Clasificacion de los Tumores Odontogenicos, Quistes de los Maxilares y Lesiones. Esta publicando bajo los auspicios del National Research Council un Atlas.
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The diagnostic accuracy of the method was 98.2% with a sensitivity of 96.2% and a specificity of 99.4%. CONCLUSIONS Four major causes of error were identified: material adequacy criteria, sampling technique, cytologic interpretation, and limitations of the procedure. FNAC proved to be a safe, accurate, inexpensive, and patient‐friendly in the effort to establish preoperative diagnosis in tumors and tumor‐like conditions of the oral and maxillofacial region.
The authors have proposed modification in the mathematic computation of diagnostic accuracy, adding the parameter of nonconcordance with histologic typing of FNAC. Cancer (Cancer Cytopathol) 1997; 81:238‐52. © 1997 American Cancer Society. Tumors of the head and neck represent 5% of all human neoplasia. Due to the anatomic complexity of the area, tumors affecting oral and perioral tissues often present a diagnostic challenge to the pathologist and the surgeon. Preoperative diagnosis is of utmost importance and the anatomy of the area, with its great variety of heterogeneous groups of benign and malignant tumors and tumor‐like conditions, makes this task difficult. Despite the revolutionary advances in radiologic diagnostic techniques with three‐dimensional computerized tomography (3D‐CT scan), magnetic resonance imaging, positron emission tomography, and color ultrasonography, a biopsy is mandatory before vital anatomic elements of the face are sacrificed in the attempt to control the disease.
Open biopsies for histologic diagnosis in some cases carries a surgical risk and are contraindicated in others (vascular tumors, salivary gland neoplasia, cervical lymphadenopathy, etc.). Fine‐needle aspiration cytology (FNAC) is an alternative diagnostic method that in recent years has gained wide acceptance in many medical and surgical specialties.
Although the method has been in existence for 150 years, its usefulness, safety, and diagnostic accuracy have been demonstrated repeatedly only during the last 20 years., In the field of oral and maxillofacial surgery, preoperative diagnosis by FNAC offers several advantages. Of cases Benign Malignant Insufficient material Salivary glands 228 163 57 8 Soft tissue and bones 67 35 28 4 Oral cavity 139 56 80 3 Oropharynx 41 11 29 1 Nasopharynx 21 4 17 ‐‐ Paranasal sinuses 18 3 15 ‐‐ Lymph nodes 508 211 293 4 Total 1022 483 519 20 In 804 cases FNAC provided or complimented the initial diagnosis and in 198 cases it documented recurrence. Surgical treatment with histologic examination of the lesions was performed in 809 of the 1022 cases. Tables to 6 analyze the tumors according to the anatomic site of origin and correlate the histopathologic diagnosis of the surgical cases with preoperative cytologic results.