2nd ASSESSMENT Flashcards
Benign pancreatic tissue in the gastrointestinal tract is one classic example of which type of tumor?
Choristoma
What are 2 main characteristics that will absolutely define malignancy?
Tumor Invasion and metastasis
What is TRUE of paraneoplastic syndromes in malignancy, EXCEPT:
• Small cell type of bronchogenic cancer secreting corticotropins
• Primarily defined as secretion of hormones from a non-endocrine tumor
• Hypercalcemia is from osteolytic bone metastasis of a primary malignancy
• May be the earliest manifestation of an occult tumor
• Largely associated with Bronchogenic carcinomas
Hypercalcemia is from osteolytic bone metastasis of a primary malignancy
Metastasis is TRUE of which of the following statement, EXCEPT:
• Liver and lung metastasis is more suggestive of a carcinoma
• Sarcomas favor hematogenous spread
• Carcinomas favor lymph node metastasis
• Axillary lymph node metastasis are primarily involved with Breast carcinomas
• Direct seeding most commonly involved peritoneal and pleural cavities
Axillary lymph node metastasis are primarily involved with Breast carcinomas
Which of the following is not a DNA oncogenic virus? • Hepatitis B virus • Epstein barr virus • Human T cell lymphoma virus (HTLV) • Herpes virus • Human papillomavirus
Herpes virus
MYC oncogene will upregulates the expression of Telomerase that makes the cell immortal.
True
Majority of malignancies (80%) are from an epithelial origin as opposed to mesenchymal elements.
True
A teratoma is characterized by all of the following, EXCEPT:
• none of the above
• It is usually a tumor of the testis and majority are malignant
• A common tumor of the ovary and majority are benign
• Unique tumor where structures found can arise in all three germ cell layers
• It is a benign tumor, the malignant counterpart of which is referred to as Immature teratoma
none of the above
APC gene mutation are associated with all of following, EXCEPT:
• Is a tumor suppressor gene
• Also known as the gatekeeper of colonic metaplasia
• Multiple colonic polyps
• Strong hereditary factor for early colon cancer
• Absence of colonic polyps
Absence of colonic polyps
Which of the following is a purely benign tumor of glandular nature?
Adenoma
Which statement is NOT true of tumor differentiation?
• Both benign and malignant tumors exhibit three grading system
• Grade 2 is synonymous to moderately-differentiated tumors
• Well-differentiated Squamous cell carcinoma will always secrete keratin
• Benign neoplasms are usually well-differentiated and resembles the native tissue
• Anaplasia is the hallmark of malignancy and will always be under histologic grading of 3
Both benign and malignant tumors exhibit three grading system
General characteristics of a tumor involved all of the following, EXCEPT: • Genetic mutations • Excessive growth • Disorganized growth • Autonomous growth • Polyclonal in origin
Polyclonal in origin
The following are TRUE of tumor markers, EXCEPT:
• Useful to gauge treatment effectivity or tumor recurrence
• Tumor markers are very sensitive and specific to a specific cancer
• Common tumor markers are PSA for prostate, CEA for colon and AFP for liver
• Not meant to give a definitive diagnosis
• Largely in the form of hormones
Tumor markers are very sensitive and specific to a specific cancer
Which of the following is NOT a mesenchymal tumor? • Leiomyoma • Urothelial cell carcinoma • Chondroma • Lymphoma • Osteosarcoma
Urothelial cell carcinoma
Which of the following microscopic finding is a 100% malignant feature, EXCEPT: • Bizarre quadripolar mitotic figures • Presence of giant cells • N:C ratio of tumor cells is 1:2 • Desmoplastic stroma • Anaplastic cells
Presence of giant cells
Which gene is known as the Governor of proliferation?
Rb gene
What is/are the hallmarks of Oncogenesis, EXCEPT:
• Sustained angiogenesis
• Proto-oncogene mutation produces cancer-inducing oncogenes
• Decrease uptake of Telomerase
• Activation and mutation of growth factors and growth factor receptors
• Inactivation of tumor suppressor gene
Decrease uptake of Telomerase
Lynch syndrome are compose of more than one primary cancer. Which statement would be FALSE?
• Increase incidence for Secondary tumors like uterine cancer
• Most likely genetic mutation is microsatellite instability
• Primary tumor usually involves Right sided colon carcinoma
• Also known HNPCC
• Associated with multiple polyps
Associated with multiple polyps
A well-differentiated squamous cell carcinoma will show microscopic evidence of the following?
Produce keratin, squamous “pearls” and intercellular bridges
Classification and biologic behavior of a tumor is based on what component?
Neoplastic cells
Which checkpoint in the cell cycle is most crucial to cause a malignant transformation?
G1/S
The growth and spread of tumor is more associated with connective tissue, blood vessels and variable inflammatory cells
True
What is the primary cause of cancer death in both sexes based on the of latest epidemiologic studies?
Lung
A 45 year old patient undergoes biopsy of a mole that appeared recently on his forehead. The tumor cells demonstrate a high activity of matrix metalloproteinases. The latter finding imposes the greatest risk for:
Invasion and metastasis