Oral Squamous Cell Carcinoma
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Questions and Answers

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?

    <p>Fibrosarcoma</p> Signup and view all the answers

    What are some initial symptoms of fibrosarcoma?

    <p>Fatigue and unintentional weight loss</p> Signup and view all the answers

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

    <p>Head and neck region</p> Signup and view all the answers

    What is the most common type of oral malignancy?

    <p>Squamous cell carcinoma</p> 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?

    <p>Endophytic</p> Signup and view all the answers

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

    <p>Papillary surface</p> Signup and view all the answers

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

    <p>Hard (indurated)</p> Signup and view all the answers

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

    <p>Basement membrane</p> Signup and view all the answers

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

    <p>Early growth phase</p> Signup and view all the answers

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

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

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

    <p>Among epithelial cells and between epithelial and stromal cells</p> Signup and view all the answers

    What is a characteristic feature of sebaceous hyperplasia?

    <p>Localized proliferation of sebaceous glands</p> Signup and view all the answers

    Where does cutaneous sebaceous hyperplasia commonly occur?

    <p>Skin of the face, especially the nose, cheeks, and forehead</p> Signup and view all the answers

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

    <p>Older than 40 years of age</p> Signup and view all the answers

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

    <p>Precancerous and early cancerous lesions</p> Signup and view all the answers

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