Nomenclature of neoplasms — Flashcards

Flashcard 1: A malignant mesenchymal tumor is a _____

Answer: sarcoma

Extra: Benign mesenchymal tumors generally end in the suffix **-oma** (e.g., lipoma, fibroma, osteoma). **Malignant** mesenchymal tumors are called **sarcomas** (e.g., liposarcoma, fibrosarcoma, osteosarcoma).

Flashcard 2: _____ implies the cancer is of mesenchymal origin

Answer: Sarcoma

Flashcard 3: _____ implies the cancer is of epithelial origin

Answer: Carcinoma

Flashcard 4: _____ is a benign tumor of cartilage

Answer: Chondroma

Flashcard 5: Tumor _____ defines the degree of localization/spread

Answer: staging

Flashcard 6: Is renal oncocytoma benign or malignant?_____

Answer: Benign

Flashcard 7: Dysplasia most often refers to proliferation of pre-_____ cells

Answer: cancerous

Flashcard 8: _____ is a testicular germ cell tumor that forms a hemorrhagic mass with necrosis

Answer: Embryonal carcinoma

Flashcard 9: Ovarian tumor associated with a pulling sensation in the groin and histology showing bundles of spindle-shaped fibroblasts?

Answer: Ovarian Fibroma

Extra: • Clinical: Pulling sensation in groin. • Histology: Bundles of spindle-shaped fibroblasts. • Association: Meigs syndrome (Ovarian fibroma, Ascites, Hydrothorax).

Flashcard 10: What is the characteristic histological finding and cell type in a Brenner tumor?

Answer: "Coffee bean" nuclei; contains Walthard cell rests (transitional epithelium)

Extra: Brenner tumor: - Mostly benign ovarian surface epithelial tumor. - Histology: Characterized by "coffee bean" nuclei (longitudinal nuclear grooves) and nests of transitional epithelium (resembling bladder mucosa) called Walthard cell rests. - Gross: Solid, tan-white/yellow, well-encapsulated.