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Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [3] [4] Cancer can be difficult to diagnose because its signs and symptoms are often nonspecific, meaning they may be general phenomena that do not point directly to a specific disease process. [5]
Signs of nasopharyngeal cancer may appear as headaches, a sore throat, and trouble hearing, breathing, or speaking. [3] Additional symptoms of NPC include facial pain or numbness, blurred or double vision, trouble opening the mouth, or recurring ear infections.
Globally, head and neck cancer accounts for 650,000 new cases of cancer and 330,000 deaths annually on average. In 2018, it was the seventh most common cancer worldwide, with 890,000 new cases documented and 450,000 people dying from the disease. [12] The risk of developing head and neck cancer increases with age, especially after 50 years.
Basal cell carcinoma (BCC): As the most common type of skin cancer, BCC accounts for 80% of all skin cancer diagnoses in the U.S., per AAD. Typically, BCC looks like a skin-colored, translucent ...
Nasal cavity or paranasal sinus cancer is often discovered when a person is being treated for a seemingly benign, inflammatory disease of the sinuses, such as sinusitis. [4] The signs and symptoms of later stage cancer are generally caused by the spread of malignant cells into the neighbouring structures of the paranasal sinus and nasal cavity. [5]
"Ear infections can interfere with sound transmission, causing a ringing sensation in the ear," Lewis says. "Infections cause inflammation and fluid buildup, which disturb the auditory system ...
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By this method, body diagrams can be derived by pasting organs into one of the "plain" body images shown below. This method requires a graphics editor that can handle transparent images, in order to avoid white squares around the organs when pasting onto the body image. Pictures of organs are found on the project's main page. These were ...
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