Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Osteoradionecrosis of the cervical spine presenting with quadriplegia in a patient previously treated with radiotherapy for laryngeal cancer: a case report
Last decade major advances have been made in the field of mouse model engineering.
Newly developed conditional mouse models have overcome important drawbacks in conventional
mouse models. Conditional mouse models are especially suited for the development
of models of sporadic human carcinomas. These models can control gene (in)activation
in a time and/or tissue-specific manner. Here, we review two important conditional mouse
model systems, based on the Tet off/on and the Cre-Lox system.
Because of accessibility and the risk of involvement of bony struc-
tures, treatment with radiotherapy can lead to radionecrosis of the
mandible or maxilla. Moreover, oral cavity squamous cell carcino-
mas may be less sensitive to chemotherapy and radiation, relative to
oropharyngeal or laryngeal cancers. Thus, primary treatment for
most tumors is surgical. Positive surgical margins, multiple involved
lymph nodes, and/or extracapsular tumor extension call for consid-
eration of postoperative chemoradiotherapy, to improve local dis-
The head and neck is a region of considerable anatomical and functional complexity,
making the accurate staging of a head and neck neoplasm a challenging task. The clinician
often detects pathology, but may not appreciate, based on the physical examination, the
entire submucosal tumor extension, nor the possible regional and distant disease spread.
The introduction of CT and MRI has revolutionized head and neck radiology. Current
radiological modalities provide a reliable visualization of the head and neck structures to
an unprecedented level of detail.
The first and second editions of this book were conceived to provide distilled, up-to-date information
to nursing students and staff nurses about many conditions and diagnoses encountered in
nursing practice. With the third edition, we have responded to the ever-changing health care
environment as well as to the recommendations of our readers and editors.
Methods of Measuring Health Benefits
It is not practical to perform all possible screening procedures. For example, screening for laryngeal cancer in smokers is not currently recommended. It is necessary to examine the strength of evidence in favor of screening measures relative to the cost and risk of false-positive tests.
Pancoast tumor, or superior sulcus tumor, is a tumor of the pulmonary apex i.e. a type of lung cancer defined primarily by its location situated at the top end of either the right or left lung.
The growing tumor can cause compression of a brachiocephalic vein, subclavian artery, phrenic nerve, recurrent laryngeal nerve, vagus nerve, or, characteristically, compression of a sympathetic ganglion resulting in a range of symptoms known as Horner's syndrome.