0000000000563133
AUTHOR
Alvaro García-rozado González
Merkel cell carcinoma of the head and neck : report of seven cases
Merkel cell carcinoma is a rare and aggressive primary cutaneous neoplasm. Clinically it is characterized by innocuous appearance, as a fast growing asymptomatic nodule or plaque. Head and neck are the most common sites of presentation (50%). The treatment is based on local surgery completed with cervical lymph node dissection, radiotherapy, chemotherapy and other treatments depending on the staging. Sentinel lymph biopsy seems to be useful for its treatment. Tumour staging is the only prognostic factor related to overall survival. Prognosis is very poor due to the high incidence of loco-regional recurrence and metastases. Seven cases of Merkel cell carcinoma of the head and neck are report…
Intraosseous mandibular hemangioma : a case report and review of the literature
Intraosseous vascular lesions are rare conditions, comprising only 0.5% to 1% of all intraosseous tumors. They mainly occur in the second decade of life especially in women. The most common locations are the vertebral column and skull; nevertheless, the mandible is a quite rare location. According to the World Health Organization, hemangiomas are benign vasoformative neoplasms of endothelial origin. However, the origin of central hemangioma is debatable. Some authors believe that it is a true neoplasm, whereas others state it is a hamartomatous lesion. Clinically, the patient may be completely symptom-free or may present discomfort, pulsatile bleeding, bluish discoloration, mobile teeth, de…