12 Questions
Which of the following characteristics is associated with a benign tumor?
Well-differentiated
What is the suffix for a benign neoplasm?
-oma
What type of tumor forms glands?
Adenocarcinoma
Which of the following is a malignant mesenchymal neoplasm?
Rhabdomyo-sarcoma
What is the term for a tumor that projects above a mucosal surface?
Polyp
What is the characteristic of a squamous cell carcinoma?
Keratin producing tumor
Which of the following types of tumors is characterized by the production of mucin?
Adenocarcinoma
What is the primary difference between a benign and a malignant tumor?
The ability to invade surrounding tissue
Which of the following types of tumors is derived from mesodermal cells?
Mesenchymal neoplasm
What is the term for a malignant tumor that produces osteoid or bone tissue?
Osteosarcoma
Which of the following types of tumors is characterized by the presence of intercellular bridges with desmosomes?
Squamous cell carcinoma
What is the suffix for a malignant mesenchymal neoplasm?
-sarcoma
Study Notes
Benign vs Malignant Neoplasms
- Benign neoplasms are typically small, slowly growing, non-invasive, well-differentiated, and localized
- Malignant neoplasms can be large or small, fast-growing, invasive, poorly differentiated, and metastasize
Benign Epithelial Neoplasms
- End in "-oma" (not Carcin-, Sarc, Lymph-, or Melan-)
- Derived from epithelial tissue (ecto- or endo-)
- Types:
- Adenoma: tumor forming glands
- Papilloma: tumor with finger-like projections
- Papillary cystadenoma: papillary and cystic tumor forming glands
- Polyp: a "tumor" that projects above a mucosal surface (not a true neoplasm)
Malignant Epithelial Neoplasms
- Carcinoma: malignant epithelial neoplasm
- Types:
- Adenocarcinoma: gland-forming neoplasm that produces mucin
- Squamous cell carcinoma: keratin-producing tumor with intercellular bridges and desmosomes, expresses P40/p63 protein
- Neuroendocrine carcinoma
- Transitional type carcinoma
- Undifferentiated carcinoma
Benign Mesenchymal Neoplasms
- Derived from mesenchymal tissue (mesodermal)
- Types:
- Lipoma: fat neoplasm
- Chondroma: cartilaginous neoplasm
- Leiomyoma: smooth muscle neoplasm
- Rhabdomyoma: striated muscle neoplasm
Malignant Mesenchymal Neoplasms
- End in "-sarcoma" (not Lymph- or Melan-)
- Types:
- Liposarcoma: fat neoplasm
- Chondrosarcoma: cartilaginous neoplasm
- Leiomyosarcoma: smooth muscle neoplasm
- Rhabdomyosarcoma: striated muscle neoplasm
- Osteosarcoma: osteoid-producing/bone tumor
Benign vs Malignant Neoplasms
- Benign neoplasms are typically small, slowly growing, non-invasive, well-differentiated, and localized
- Malignant neoplasms can be large or small, fast-growing, invasive, poorly differentiated, and metastasize
Benign Epithelial Neoplasms
- End in "-oma" (not Carcin-, Sarc, Lymph-, or Melan-)
- Derived from epithelial tissue (ecto- or endo-)
- Types:
- Adenoma: tumor forming glands
- Papilloma: tumor with finger-like projections
- Papillary cystadenoma: papillary and cystic tumor forming glands
- Polyp: a "tumor" that projects above a mucosal surface (not a true neoplasm)
Malignant Epithelial Neoplasms
- Carcinoma: malignant epithelial neoplasm
- Types:
- Adenocarcinoma: gland-forming neoplasm that produces mucin
- Squamous cell carcinoma: keratin-producing tumor with intercellular bridges and desmosomes, expresses P40/p63 protein
- Neuroendocrine carcinoma
- Transitional type carcinoma
- Undifferentiated carcinoma
Benign Mesenchymal Neoplasms
- Derived from mesenchymal tissue (mesodermal)
- Types:
- Lipoma: fat neoplasm
- Chondroma: cartilaginous neoplasm
- Leiomyoma: smooth muscle neoplasm
- Rhabdomyoma: striated muscle neoplasm
Malignant Mesenchymal Neoplasms
- End in "-sarcoma" (not Lymph- or Melan-)
- Types:
- Liposarcoma: fat neoplasm
- Chondrosarcoma: cartilaginous neoplasm
- Leiomyosarcoma: smooth muscle neoplasm
- Rhabdomyosarcoma: striated muscle neoplasm
- Osteosarcoma: osteoid-producing/bone tumor
Learn about the characteristics that distinguish benign from malignant neoplasms, including size, growth rate, invasiveness, differentiation, and metastasis. Understand the types of benign epithelial neoplasms, such as adenoma and papilloma.
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