Maxillofacial metastasis of genitourinary origin. A report of 3 cases and review of the literature.

INTRODUCTION: The maxillofacial region can harbour a wide range of primary tumours, as well as secondary tumours spreading from distant sites. Rare, though nevertheless important among the latter are genitourinary tumours, such as clear cell renal carcinoma and cervical cancer. Diagnosis of the maxillofacial metastasis sometimes precedes that of the original site, though in other cases the metastasis may arise many years after treatment of the primary tumour. CASE REPORT: We present three cases of maxillofacial metastasis of genitourinary tumours, two clear cell renal adenocarcinoma and squamous cell carcinoma of the uterine cervix. The patients were referred our hospital service for diagnosis and treatment, after having been initially evaluated for buccodental symptoms. DISCUSSION: The appearance of a maxillofacial tumour, initially with the aspect of a primary tumour, may sometimes be the consequence of haematogenous dissemination from another site, such as these surprising cases originating in the genitourinary area. If disseminated metastatic disease is suspected, an extensive oncological screening should be done to evaluate the best therapeutic option in each patient.

[Aggressive fibromatosis of the head and neck in pediatric age. A case report and review of the literature]. / Fibromatosis agresiva de cabeza y cuello en la edad pediátrica. Un caso clínico y revisión de la literatura.

BACKGROUND: Desmoid tumor is a rare benign mesenchymal neoplasm in children primarily originated in the muscle connective tissue, fascial sheaths, and musculoaponeurotic structures. It is often misdiagnosed as fibroids, reactive processes or low-grade fibrosarcomas. It is characterized by slow growth, locally aggressive nature, high recurrence rate without metastasize capacity. MATERIAL AND METHODS: 7 year old girl with right paramandibular tumor, a year of evolution. It was characterized by slow and painless growth, trismus and mandibular latero-deviation to the left during mouth opening. Imaging tests showed soft parts tumor in masseteric region with a periosteal reaction in the mandibular body. The biopsy reported a desmoid tumor. RESULTS: Risdon approach was performed for tumor resection and external cortical Split mandibular body, without preserving the marginal branch of CP VII. The pathology reports of aggressive fibromatosis without bone involvement. It currently presents marginal paralysis and free-disease. CONCLUSIONS: Desmoid tumors of head and neck are difficult to treat because of the proximity or involvement in vital structures, infiltrative nature and tendency to local recurrence. Primary surgery with negative surgical margins is the treatment of choice. However, in many cases this involves disfiguring surgery. Therefore, in these cases and in those surgical margins affections, the use of chemotherapy/non-cytotoxic drugs can be an alternative. Because they are low incidence tumors prospective multicenter studies are needed to clarify the role of adjuvant treatment in this tumor.

Kimura disease in an African patient.

We operated on a 23-year-old black Nigerian man with a 4-year history of a tumour on the left cheek associated with IgE hypergammaglobulinaemia and peripheral eosinophilia. The lesion recurred.

[Magnetic resonance imaging in the diagnosis of oral carcinoma]. / La resonancia magnética en el diagnóstico del carcinoma oral.

Oral cancer accounts for 5% of all tumors in men and 2% in women. We analyzed frequency, sex distribution and cervical lymph node involvement in relation to tumor site. Local extension was diagnosed in 66 patients by MR imaging and the results were compared to CT scan. The results of these studies were correlated with the histopathological study of the specimen in relation to the diagnosis of bone infiltration, tumor size and cervical node infiltration. Bone infiltration was similar in MR images and CT scans. Tumor size was better diagnosed by MR imaging. Detection of cervical lymph node involvement was similar in MR imaging and CT scan.

[Miniplates in the treatment of mandibular fractures]. / Miniplacas en el tratamiento de fracturas de mandíbula.

We present in this paper the treatment of mandibule fractures with miniplates of titanium. The miniplates have provided stable fixation and compared with other techniques improved in all concepts. The complication rates have been very low: there were not infections. The stability of fixation avoid to block with elastic training. Therefore, meticulous techniques is mandatory with particular emphasis in passive fitling of the plates.