نتایج جستجو برای: head and neck neoplasm
تعداد نتایج: 16856936 فیلتر نتایج به سال:
Reprint requests to: Dr. Michael Mu Huo Teng Department of Radiology, Taipei Veterans General Hospital. No. 201, Shih Pai Road, Taipei 112, Taiwan, R.O.C. Synovial sarcoma is a rare and aggressive soft tissue tumor with extensive metastatic potential. It accounts between 8 and 10% of all soft tissue malignancies. Involvement of the head and neck region is relatively rare. We report a case of sy...
Deep neck space abscesses are common otolaryngological emergencies, and prompt incision and drainage is the treatment of choice. Head and neck cancers often present with cervical metastases that may become secondarily infected. Clinical presentation is similar to a deep neck abscess. Surgical drainage of such collections has implications on subsequent treatment. In this case series, we describe...
Osteoid osteoma (OO) is a relatively common skeletal neoplasm, frequently involves long bones. OO of rib is extremely rare, including 0.23-2% of OO cases. Most of them arose in posterior arc, frequently in its head or neck and might lead to painful scoliosis. Involvement of anterior aspect of a rib is extremely rare. Skeletal scintigraphy is highly sensitive for detection of OO. “Doubl...
Paragangliomata of the head and neck, although a recognised entity, are extremely rare tumours and will be encountered by only a few clinicians. Furthermore, the nasal cavity and nasopharynx are among the least common sites in which this neoplasm may arise. We describe a case of a paraganglioma of the nasal cavity mucosa and draw attention to the difficulties encountered in predicting the biolo...
Salivary gland tumors are rare and account for 2-3% of tumors occurring in the head and neck. Pleomorphic adenoma is a benign neoplasm which is commonly encountered in the parotid gland and other major salivary glands. At times they can also develop in minor salivary glands of the palate. The majority of minor salivary gland tumors are malignant. This case report describes a case of mixed tumor...
Rhabdomyosarcoma (RMS) is the most common soft-tissue sarcoma of childhood. The neoplasm probably originates from pluripotential mesenchyme, and may occur anywhere in the body. Thirty to 40% arise in the head and neck. Imaging studies typically show a homogeneous soft-tissue mass, often with poorly defined margins and permeative bone destruction (1-5). We report an unusual case of embryonal RMS...
32 ABSTRACT Benign nerve sheath myxoma (myxoid neurothekeoma) is a rare benign cutaneous neoplasm of nerve sheath origin. This tumor is commonly seen in the head and neck region and sometimes in the upper extremity. The presence of myxoid neurothekeoma on the lower limb is seldom and rarely reported. In this report we presented a new case of myxoid neurothekeoma in the lower limb of a 42-year-o...
September 01, 2008 About 500,000 head and neck carcinomas are diagnosed worldwide annually. This accounts for approximately 8% of all newly diagnosed cases of cancer, ranking head and neck carcinoma the sixth most common.[1] In the United States, 47,560 new head and neck carcinomas are expected to be diagnosed in 2008,[2] and this disease accounts for 5% of all newly diagnosed cases of cancer. ...
Thyroglossal duct carcinoma is uncommon, occurring in approximately 1% of all thyroglossal duct remnants. This rare neoplasm is characterized by relatively nonaggressive behavior with infrequent lymph nodal spread. Another rare neoplasm of the head and neck region is a carotid body tumor. A 78-year-old woman with a 3-year history of midline and bilateral neck masses was referred to us. Fine nee...
Intraosseous cavernomas are very rare benign lesions representing less than 1% of all skeletal tumors and most frequently observed in vertebrae and head and neck bones. Solitary hemangiomas of the hand bones are exceptionally rare. We report a case of this neoplasm in the distal epiphysis of the third metacarpal bone in a 68-year-old man, along with the clinicopathological findings. The differe...
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