Oral Squamous Cell Carcinoma

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What is a historical name for lesions that continue to enlarge slowly over months and years, leading to ulceration and destruction of underlying structures?

Fibrosarcoma

Melanoma

Rodent ulcer (correct)

Mucoepithelial dysplasia

Which malignant neoplasm arises from benign melanocytic lesions or from melanocytes within normal skin or mucosa?

Fibrosarcoma

Mucoepithelial dysplasia

Melanoma (correct)

Squamous cell carcinoma

What is considered a major causative factor for melanoma?

UV radiation (correct)

Hereditary factors

Bacterial infection

Overconsumption of sugar

Which malignant tumor is made of fibroblasts and is a rare type of soft tissue sarcoma?

Fibrosarcoma Signup and view all the answers

What are some initial symptoms of fibrosarcoma?

Fatigue and unintentional weight loss Signup and view all the answers

Where do fibrosarcomas most often present as slow-growing masses?

Head and neck region Signup and view all the answers

What is the most common type of oral malignancy?

Squamous cell carcinoma Signup and view all the answers

Which growth pattern of oral squamous cell carcinoma is characterized by a depressed, ulcerated central area with a rolled border?

Endophytic Signup and view all the answers

What is a common feature of an exophytic oral squamous cell carcinoma?

Papillary surface Signup and view all the answers

What type of texture is commonly felt on palpation in an oral squamous cell carcinoma?

Hard (indurated) Signup and view all the answers

What anatomical barrier is breached in stage 1 to stage 4 invasive cancers?

Basement membrane Signup and view all the answers

Which phase of growth of oral squamous cell carcinoma is typically associated with minimal pain?

Early growth phase Signup and view all the answers

What changes occur in epithelial tissues during the development of premalignant and malignant changes?

Modified rates of metabolic activity, cellular proliferation, and/or death Signup and view all the answers

Which communication pathways can be impaired during the development of premalignant changes?

Among epithelial cells and between epithelial and stromal cells Signup and view all the answers

What is a characteristic feature of sebaceous hyperplasia?

Localized proliferation of sebaceous glands Signup and view all the answers

Where does cutaneous sebaceous hyperplasia commonly occur?

Skin of the face, especially the nose, cheeks, and forehead Signup and view all the answers

In which age group does cutaneous sebaceous hyperplasia usually affect adults?

Older than 40 years of age Signup and view all the answers

What has fluorescence spectroscopy been under investigation as a tool for detecting?

Precancerous and early cancerous lesions Signup and view all the answers