Tumour classification and nomenclature Flashcards Preview

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Flashcards in Tumour classification and nomenclature Deck (22)
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1
Q

For benign epithlial tumours, what is the first division with regards to classification?

A

Surface (non-glandular/non-secretory) -> papilloma

Glandular (secretory) -> adenoma

2
Q

How may benign epithelial tumours of the surface (non-gladular/non-secretory) be further classified?

A

Name of CELL TYPE of origin -> (e.g. SQUAMOUS CELL)

e.g. squamous cell papilloma.

3
Q

How may benign epithelial tumours of the gladular/secretory tissues be further classified?

A

Name of GLANDULAR TISSUE of origin -> (e.g. COLONIC)

e.g. pancreatic cystadenoma

4
Q

What name is given to malignant epithlial tumours.

A

Carcinomas

5
Q

How would you name a malignant epithelial tumour of surface origin?

A

By prefixing CARCINOMA with the cell of origin.

e.g. squamous cell carcinoma

6
Q

How would you name a malignant epithelial tumour of glandular origin?

A

Adenocarcinoma

7
Q

What name would be given to a benign tumour derived from the basal cells of the skin?

A

Basal cell papilloma

8
Q

What name would be given to a benign tumour derived from the transitional cells of the bladder?

A

Transitional cell papilloma

9
Q

What name would be given to a benign tumour derived from liver cells?

A

Liver cell adenoma

10
Q

What name would be given to a malignant tumour derived from glandular epithelia of the colon?

A

Colonic adenocarcinoma

11
Q

What name would be given to a malignant tumour derived from basal cells of the skin?

A

Basal cell carcinoma

12
Q

How would you name a benign mesenchymal tumour?

A

With the suffix -oma preceded by the prefix for the tissue or cell of origin.
e.g. rhabdomyoma - benign tumour of skeletal muscle

13
Q

How would you name a malignant mesenchymal tumour?

A

With the suffice -sarcoma preceded by the prefix for the tissue or cell of origin.
e.g. rhabdomyosarcoma

14
Q

What are the prefixes for the following mesenchymal tissues?

Smooth muscle
Skeletal muscle
Fibrous tissue
Bone
Cartilage
Blood vessels
Adipose tissue
A
Leiomyo-
Rhabdomyo-
Fibro-
Osteo-
Chondro-
Angio-
Lipo-
15
Q

What name is given to a benign tumour of the melanocytes?

A

Melanocytic nevus

16
Q

Give examples of malignant tumours that defy the usual naming conventions.

A

Melanoma
Leukemia
Lymphoma
CNS neoplasms (e.g. GBM, astrocytoma)

17
Q

What are germ cell tumours?

A

Common in - gonads
Cells arise from germ cells.

e.g. seminoma, teratoma

18
Q

What are embryonal tumours?

A

Occur in very young

19
Q

Is a pleomorphic salivary adenoma benign or malignant?

A

Benign

20
Q

Where might you find a carcinosarcoma?

A

Ovaries

21
Q

What is a hamartoma?

A
  • Non-neoplastic overgrowth of normal tissue
  • Indigenous to the site of occurrence
  • Developmental abnormalities
  • Lung hamartoma
22
Q

What is a choristoma?

A

AKA Heterotropic rests
Nodules of organ parenchyma in another organ
E.g. normal (non-neoplastic) pancreas nodule in stomach