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It is a potential space in the face over the angle of the jaw, and is paired on each side. It is located between the lateral aspect of the mandible and the medial aspect of the masseter muscle and its investing fascia. The term is derived from sub-meaning "under" in Latin and masseteric which refers to the masseter muscle.
1.1 Surface ectoderm. 1.1.1 Skin. ... lateral plate mesoderm and notochord). Also showing the neural tube and the ... gamma cell) Delta cell; Epsilon cell; Pharyngeal ...
Main histopathology features of squamous-cell carcinoma. Squamous-cell carcinoma (SCC), also known as epidermoid carcinoma, comprises a number of different types of cancer that begin in squamous cells. [1] These cells form on the surface of the skin, on the lining of hollow organs in the body, and on the lining of the respiratory and digestive ...
the lateral pterygoid muscle superiorly; the inferior border of the mandible (lingual surface) inferiorly; the medial pterygoid muscle medially (the space is superficial to medial pterygoid) the ascending ramus of the mandible laterally (the space is deep to the ramus of the mandible)
The primary cause of skin cancer is prolonged exposure to ultraviolet (UV) radiation from the sun or tanning devices. Skin cancer is the most commonly diagnosed form of cancer in humans. [11] [12] [13] There are three main types of skin cancers: basal-cell skin cancer (BCC), squamous-cell skin cancer (SCC) and melanoma. [1]
Cutaneous squamous-cell carcinoma is the second-most common cancer of the skin (after basal-cell carcinoma, but more common than melanoma). It usually occurs in areas exposed to the sun. Sunlight exposure and immunosuppression are risk factors for SCC of the skin, with chronic sun exposure being the strongest environmental risk factor. [26]
Oral cancer on the tongue. Oral cancer may occur on the lips, tongue, gums, floor of the mouth or inside the cheeks. The majority of cancers of the mouth are squamous cell carcinoma. Oral cancers are usually painless in the initial stages or may appear like an ulcer.
Odontogenic infections which erode through the buccal cortical plate of the mandible or maxilla will either spread into the buccal vestibule (sulcus) and drain intra-orally, or into the buccal space, depending upon the level of the perforation in relation to the attachment of buccinator to the maxilla above and the mandible below (see diagrams).