Open full size image Open full size image Open full size image The oral cavity represents the entrance to the upper aerodigestive tract, which begins at the lips and ends at the anterior surface of the faucial arch. It is lined by squamous epithelium with interspersed minor salivary glands. The oral cavity also contains the dentoalveolar structures with the upper and lower dentition. The oral cavity…
Open full size image Open full size image Open full size image The lips, which are located at the entrance to the alimentary tract, are essential for a variety of complex tasks, including articulation of speech, facial expression, and the oral phase of deglutition. The anatomic structure of the lips is complex; they consist of skin, mucosa, minor salivary glands, muscles, and neurovascular structures. Accordingly, a…
Open full size image Open full size image Open full size image Tumors involving the skull base of the anterior cranial fossa usually arise extracranially with secondary extension to the skull base. Occasionally intracranial tumors such as meningiomas may have extracranial extensions. The site distribution of tumors involving the anterior skull base is shown in Fig. 6.1 . The nasal cavity and ethmoid region are by…
Open full size image Open full size image Malignancies of the sinonasal tract are rare. They account for less than 10% of head and neck cancers, with an annual incidence of 0.5 to 1.0 per 100,000 people in the United States. The nasal cavity is by far the most common site for neoplasia of epithelial origin arising in this region, followed by the maxillary antrum and…
Open full size image Open full size image Open full size image Although they are relatively rare, tumors that involve the eyelids and orbit are a therapeutic challenge because of the complex anatomy and diversity of pathologic processes that occur in this region. A systematic approach to evaluation and management and a thorough understanding of the pathologic processes of these tumors are required to optimize outcome.…
Open full size image Open full size image Open full size image The skin, by surface area, is the largest organ in the human body. In its role as a barrier to the outside environment, the skin is continuously exposed to putative carcinogens; thus it is not surprising that skin cancer represents the single most common human malignancy. The diversity of embryologic origins of the skin…
Open full size image Because most patients with tumors of the head and neck initially present to the surgeon, it is the surgeon's responsibility to do a comprehensive examination of the head and neck area, accurately assess the tumor and assign the stage of the disease, discuss treatment options, obtain appropriate multidisciplinary input, and initiate treatment planning. Accordingly, the head and neck surgeon must have a…
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KEY FACTS Terminology Definition: Vascular loop compressing facial nerve at its root exit zone within cerebellopontine angle (CPA) cistern causing hemifacial spasm You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Definition: Vascular loop compressing trigeminal nerve (CNV) at its root entry zone (REZ) or preganglionic segment (PGS) You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Definition: CPA-IAC metastases refers to systemic or CNS neoplasia affecting area of CPA-IAC You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Abbreviation: Facial nerve schwannoma (FNS) FNS definition: Rare benign tumor of Schwann cells that surrounds CNVII in CPA-IAC ± labyrinthine CNVII You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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KEY FACTS Terminology PHACES : Association of craniofacial hemangioma and 1 or more features listed in PHACES acronym P osterior fossa malformations H emangioma A rterial lesions C ardiac abnormalities/aortic coarctation E ye abnormalities S ternal defects or supraumbilical raphe You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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KEY FACTS Terminology Definition: Acute or chronic infectious infiltrate of pia, arachnoid, and CSF in vicinity of T-bone, internal auditory canal (IAC), and cerebellopontine angle (CPA) You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology IAC-VM: Benign developmental lesion associated with CNVII in IAC May extend to geniculate ganglion IAC "hemangioma" is misnomer for IAC-VM You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Lipoma in CPA-IAC: Nonneoplastic mass of adipose tissue in CPA-IAC area You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Arachnoid cyst (AC) definition: Developmental arachnoid duplication anomaly creating CSF-filled sac You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here