technetium-tc-99m-medronate and Maxillary-Neoplasms

A rare case of intraosseous, polymorphous low-grade adenocarcinoma (PLGA) of the maxilla is presented. The lesion appeared to be cystic radiographically and the only finding which suggested malignancy was an irregular cortical border.

Topics: Adenocarcinoma; Cysts; Diagnosis, Differential; Female; Follow-Up Studies; Gallium Radioisotopes; Humans; Maxillary Diseases; Maxillary Neoplasms; Middle Aged; Palatal Neoplasms; Radiography, Panoramic; Radiopharmaceuticals; Technetium Tc 99m Medronate; Tomography, X-Ray Computed

The purpose of this study was to evaluate the radiographic findings of malignant fibrous histiocytoma (MFH) and to discuss the contribution of these findings to a differentiation of MFH from other malignant tumors of the head and neck.. Two cases of MFH of the maxillary sinus affecting the alveolar bone were evaluated radiographically and scintigraphically.. We reported the following findings, which have only seldom been described: the presence of fairly well-demarcated bone destruction in the intraoral radiograph; the relatively smooth surface, uniform density, or no necrotic area of the tumor; in computed tomograph images showing the clear separation of the tumor from surrounding soft tissues; bone scintigraphs reflecting the periosteal reaction to tumor invasion; and lymphoscintigraphy of the metastatic lymph nodes.. We evaluated the radiographic findings from 2 cases of MFH and describe findings that may aid in the differentiation of MFH. These radiographic features may help dentists differentiate MFH from other malignant tumors in the head and neck, although MFH is a rare disease and there are no radiographic findings that would indicate a specific diagnosis of MFH.

Topics: Alveolar Process; Citrates; Diagnosis, Differential; Female; Gallium; Gallium Radioisotopes; Histiocytoma, Benign Fibrous; Humans; Lung Neoplasms; Lymphatic Metastasis; Male; Maxillary Neoplasms; Maxillary Sinus Neoplasms; Middle Aged; Neoplasm Invasiveness; Periosteum; Radiography, Panoramic; Radionuclide Imaging; Radiopharmaceuticals; Technetium Tc 99m Medronate; Tomography, X-Ray Computed

Topics: Aged; Bone Neoplasms; Carcinoma, Adenoid Cystic; Humans; Male; Maxillary Neoplasms; Radiography; Radionuclide Imaging; Radiopharmaceuticals; Salivary Gland Neoplasms; Technetium Tc 99m Medronate

Topics: Aged; Bone and Bones; Carcinoma, Squamous Cell; Humans; Lung Neoplasms; Male; Maxillary Neoplasms; Palatal Neoplasms; Radionuclide Imaging; Radiopharmaceuticals; Technetium Tc 99m Medronate; Tomography, X-Ray Computed

Detecting osseous involvement is clinically important in the management of oral carcinoma. Thirty-one patients with osseous involvement due to oral carcinoma who underwent panoramic radiography and bone scintigraphy were evaluated retrospectively. Bone scintigraphy confirmed osseous involvement in all 31 (100%) of these patients. In 27 (87%) of 31 patients with osseous involvement, both the panoramic radiogram and bone scintigram were positive. In the remaining four patients (13%), bone scintigram was positive for mandibular or maxillary invasion, while panoramic radiogram was negative. There were no instances of an abnormal radiogram with a normal bone scintigram. These findings strongly suggest that bone scintigraphy is more sensitive than panoramic radiography in detecting osseous involvement of the mandible and maxilla due to oral carcinoma. Furthermore, bone scintigraphy was a critical pre-surgical in determining the extent of the osseous involvement.

Topics: Carcinoma, Squamous Cell; Cheek; Diagnostic Errors; Evaluation Studies as Topic; Gingival Neoplasms; Humans; Mandibular Neoplasms; Maxillary Neoplasms; Melanoma; Mouth Neoplasms; Neoplasm Invasiveness; Radiography, Panoramic; Radionuclide Imaging; Retrospective Studies; Sensitivity and Specificity; Technetium Tc 99m Medronate

Extracolonic manifestations of Gardner's syndrome are common and may precede the detection of colonic polyps. Tc-MDP bone scintigraphy performed on a patient with Gardner's syndrome demonstrated intense uptake of radiotracer within the maxilla and mandible as a result of the dental anomalies associated with this disorder. Nuclear scintigraphy has a role in the imaging of these patients for skeletal anomalies, the detection of thyroid carcinoma, and for skeletal metastases when colon carcinoma is detected.

Topics: Adult; Fibromatosis, Aggressive; Gardner Syndrome; Humans; Male; Mandibular Neoplasms; Maxillary Neoplasms; Osteoma; Radionuclide Imaging; Soft Tissue Neoplasms; Technetium Tc 99m Medronate; Tomography, X-Ray Computed