Identification and Types of Melanomas Quiz
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Questions and Answers

What is a strong association of vitiligo?

  • Autoimmune thyroid disorders (correct)
  • Excessive UV exposure
  • Hypopigmentation
  • Diabetes

Which of the following is NOT a high-risk factor for melanoma?

  • Caucasian descent (correct)
  • Familial dysplastic nevi
  • Whites (fair skin)
  • Red hair

What is the main clinical feature of melanoma?

  • Jaundice
  • Erythema
  • Hypopigmentation (correct)
  • Hyperpigmentation

Which pathway is associated with pro-growth signaling in melanoma?

<p>NRAS/BRAF (C)</p> Signup and view all the answers

What are typical markers for melanoma?

<p>S-100 (D)</p> Signup and view all the answers

Which pattern describes radial growth in metastatic melanoma?

<p>'Superficial spreading' spread (D)</p> Signup and view all the answers

What type of nevi is associated with a high risk of developing melanoma?

<p>'Dysplastic Nevus' (C)</p> Signup and view all the answers

Which of the following is NOT a feature of atypical melanocytes in invasive melanoma?

<p>'Clear cytoplasm' (B)</p> Signup and view all the answers

'Vertical Growth Phase' in melanoma represents:

<p>'Downward invasion into deeper dermal layers' (B)</p> Signup and view all the answers

Which protein controls cell signaling pathways responsible for growth, migration, adhesion, cytoskeletal integrity, survival, and differentiation?

<p>NRAS (B)</p> Signup and view all the answers

In melanoma, RAS mutation occurs by switching signaling from BRAF to which other protein?

<p>CRAF (A)</p> Signup and view all the answers

Which syndrome is associated with germline mutations in BRAF?

<p>Cardiofaciocutaneous syndrome (C)</p> Signup and view all the answers

What is the function of TERT (Telomerase reverse transcriptase) in rapidly dividing cells?

<p>Increasing telomerase activity (A)</p> Signup and view all the answers

Which clinical feature is NOT commonly associated with Hutchinson's sign?

<p>Bowen’s disease (C)</p> Signup and view all the answers

Which type of carcinoma is NOT mentioned as being associated with mutations in TERT promoters?

<p>Squamous cell lung carcinoma (B)</p> Signup and view all the answers

What cellular processes are affected by BRAF mutations?

<p>Differentiation and secretion (C)</p> Signup and view all the answers

'SLIDES' in the text refers to what cellular component?

<p>'SLIDES' is not a cellular component mentioned in the text (B)</p> Signup and view all the answers

'Hutchinson's sign' is characterized by which specific feature on the nails?

<p>&quot;Brown-black pigmentation from longitudinal melanonychia&quot; (A)</p> Signup and view all the answers

Which characteristic is typical of Amelanotic melanoma?

<p>Reddish, elevated plaque (B)</p> Signup and view all the answers

Which feature distinguishes Melanoma in Situ from Invasive Melanoma?

<p>Basal and upper epidermis involvement (D)</p> Signup and view all the answers

What is a key characteristic of Nodular Melanomas?

<p>Maturation of tumor cells (B)</p> Signup and view all the answers

What distinguishes Superficial Spreading Melanomas histologically?

<p>Irregular acanthosis with nest formation (B)</p> Signup and view all the answers

Which subtype of Melanoma is known to affect the skin of soles and palms?

<p>Acral Lentiginous Melanoma (D)</p> Signup and view all the answers

What histological feature is common in Acral Lentiginous Melanomas?

<p>Spindle dermal component but not epidermal involvement (D)</p> Signup and view all the answers

Which subtype of melanoma is characterized by a reddish slightly elevated plaque?

<p>Amelanotic Melanoma (C)</p> Signup and view all the answers

'Hutchinson’s sign' is associated with which type of Melanoma?

<p>Acral Lentiginous Melanoma (C)</p> Signup and view all the answers

Which characteristic is typical of Lentigo Maligna Melanoma?

<p>Basal and upper epidermis involvement (A)</p> Signup and view all the answers

In typical melanocytes in the basal layer, which feature is NOT commonly observed?

<p>Dermal spindle melanocytes (C)</p> Signup and view all the answers

Which type of melanoma cells are noted for their presence in nests or single cells at the basal layer?

<p>In situ Lentigo maligna (B)</p> Signup and view all the answers

Which characteristic is NOT associated with Invasive Melanomas?

<p>Basal layer location (A)</p> Signup and view all the answers

What is a common marker that is NEGATIVE in Paget's disease but POSITIVE in both benign nevus and melanoma?

<p>S100 (B)</p> Signup and view all the answers

Which level of Clark's system of invasion involves no penetration of the basement membrane?

<p>Level I: In Situ (C)</p> Signup and view all the answers

Which feature is characteristic of Nodular Melanoma?

<p>Radial growth (A)</p> Signup and view all the answers

What differentiates Lentigo Maligna from Lentigo Maligna Invasive?

<p>'Solar elastosis in underlying dermis (A)</p> Signup and view all the answers

'Spindled or epithelioid' cells are most commonly seen in which invasive type of melanoma?

<p>'Superficial Spreading' Melanoma (B)</p> Signup and view all the answers

'Multinucleated melanoma cells' are typically found in which type of melanoma?

<p>'Lentigo Maligna Invasive' (A)</p> Signup and view all the answers

'Solar elastosis' is a feature most commonly associated with which type of melanoma?

<p>'Lentigo Maligna Invasive' (C)</p> Signup and view all the answers

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