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75 Cards in this Set

  • Front
  • Back

Adenoma

Benign epithelial neoplasm of glandular tissue (i.e. Fibroadenoms of the glands of the breast)

Choristoma

Benign mass of tissues not normally found at the site of origin.

Hamartoma

(Rare) benign mass of tissues usually found at site of origin. (Seen in lung)

Sarcoma

Malignant neoplasm arising from mesenchymal tissue (blood & lymphatics).



- don't commonly metastasize to lymph nodes

Teratoma

Neoplasm derived from germ cells that represent all 3 layers (ectoderm, endoderm, and mesoderm)

Fibroadenomas

Common in breast tissue

Mesothelioma

Benign lesion of thoracic & abdominal lining of the body cavity

Mesothelioma

Benign lesion of thoracic & abdominal lining of the body cavity

Rhabdomyosarcoma

Malignant tumor of skeletal muscle (usually seen in soft tissues)

Sessile polyp

Attached by a broad base as opposed to pedunculated

Carcinoma

Tumor of the epithelial lining:


1) bladder (urothelial)


2) cervix (glandular epithelium or endometrium)



- metastasize through lymphatics

Leiomyomas

White; benign lesion of smooth muscle (common in uterus)

Leiomyomas

White; benign lesion of smooth muscle (common in uterus)

Lipomas

Yellow fatty rumors occurring beneath the epidermis.

Leiomyomas

White; benign lesion of smooth muscle (common in uterus)

Lipomas

Yellow fatty rumors occurring beneath the epidermis.

Melanomas

Malignant; increase in size quickly and are darkly pigmented.

Leiomyomas

White; benign lesion of smooth muscle (common in uterus)

Lipomas

Yellow fatty rumors occurring beneath the epidermis.

Melanomas

Malignant; increase in size quickly and are darkly pigmented.

Nevus

Benign counter part to a melanoma (very common; light to dark brown)

Hemangioma

Benign vascular lesion of the skin

Neoplasm

"New growth"


- Monoclonal proliferation of cells (same clone produced over and over again)

Flow Cytometry

Indicates DNA content, aneuploidy, and growth fraction.

In Situ Cancers

If limited to epithelium are noninvasive (local excision = 100% cure rate)

CA-125

Tumor Marker for ovarian cancer

Anaplasia

"Lack of differentiation"


- Pleomorphism (variation on size and shape)


- hyperchromatism (excessive coloration or staining)

MYC Oncogene

Major transcriptional growth factor (bind cyclin D1--> activate cell cycle)



- activated in Burkitt lymphoma

HER2

Encodes for epithelial growth factors (EGF) receptors to be placed on the cell surface

MYC Oncogene

Major transcriptional growth factor (bind cyclin D1--> activate cell cycle)



- activated in Burkitt lymphoma

HER2

Encodes for epithelial growth factors (EGF) receptors to be placed on the cell surface

p53

Tumor suppressor

MYC Oncogene

Major transcriptional growth factor (bind cyclin D1--> activate cell cycle)



- cMYC activated in Burkitt lymphoma t(8;14)

HER2

Stimulated by ERBB2 Encodes for epithelial growth factors (EGF) receptors to be placed on the cell surface



Tx: antibodies for HER2 receptors

p53

Tumor suppressor


- inactivated during colon cancer

APC

Tumor suppressor


- Inactivated during colon cancer (loss of B-catenin destruction; B-catenin translocation to the nucleus--> transcription factor promoting growth)



- activation of WNT signaling pathway

RAS

Encode GTP-binding protein (located under the cell membrane)

t(9:22) transloction

Chronic Myelogenous Leukemia


- translocation causes uncontrolled non-receptor tyrosine kinase activity of BCR-ABL fusion gene.



Tx: inhibit tyrosine kinase

BCL2 Overexpression

Block apoptosis



Tx: give drugs that activate caspases

Nuclear Translocation if B-cantenin

w/ mutational loss of APC gene = Colon cancer

N-MYC gene

Amplification occurs in 30-40% of neuroblastomas

N-MYC gene

Amplification occurs in 30-40% of neuroblastomas

BCL1 & BCL2 gene

Mutated = non-Hodgkin lymphomas



- BCL2 inhibit apoptosis

Dysplasia

Alteration in size and/or shape

Familial tumors

Defective copy of a tumor suppressor gene



- melanoma = p16 (inhibit cyclin-dependent kinases)

Lyn mutation

Seen in immunodeficiency states

RB Gene

Controls the G1 to S phase transition in the cell cycle (checkpoint)

TGF-B

Inhibit cell proliferation by activating growth-inhibiting genes (CDKIs)



- all pancreatic cancers have at least one mutation


- 83% colon cancers have at least one mutation

HMSH2

Repair DNA damage



- also hPMS1, hPMS2, hMLH1

Neurofibromatosis Type 1

Loss of NF1 gene which encodes for GTPase-activating protein--> active RAS trapped



- Lesion attached to peripheral nerve

von Hippel-Lindau (vHL) gene

Tumor suppressor; produces a protein that binds hypoxia-inductive factor 1-alpha (HIF-1-alpha)



- loss of binding = activation of angiogenesis factors

CD44

Plays a role in cell adhesion; enables malignant cells to metastasize

Immunodeficiency Diseases

Increased risk for neoplasia (I.e HIV)

Xeroderma Pigmentosum

Autosomal recessive condition w/ loss of nucleotide excision repair if DNA

Vinyl Chloride

Rare cause of liver cancer

Vinyl Chloride

Rare cause of liver cancer

Arsenic

High risk of skin cancer

Vinyl Chloride

Rare cause of liver cancer

Arsenic

High risk of skin cancer

Asbestos

Mesothelioma and/or bronchogenic carcinomas

Vinyl Chloride

Rare cause of liver cancer

Arsenic

High risk of skin cancer

Asbestos

Mesothelioma and/or bronchogenic carcinomas

Benzene

Linked to Leukemias

Beryllium

Lung cancer

Nickel

Respiratory tract cancers

Nickel

Respiratory tract cancers

Naphthalene

Risk factor of urinary cancer

Cyclophosphamide

Alkylation agent used for chemotherapy that has carcinogenic effects (DNA Damage)

HPV

- Produces E7 which binds Rb --> transcription



- E6 binds and inactivated p53

HPV

- Produces E7 which binds Rb --> transcription



- E6 binds and inactivate p53

HBV & HCV

Inactivate tumor suppressor p53

a-Fetoprotein (AFP)

Protein marker for hepatic ellipse carcinomas and some testicular carcinomas

CA-19-9

Tumor marker for colonic and pancreatic tumors

Immunostains

Used to detect antigenic characteristics like protein expression to help characterize the cells origin