Difference between revisions of "Metastases"

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=Special types=
=Special types=
==In-transit metastasis==
==In-transit metastasis==
Definition - the metastatic tumour must be:<ref>URL: [http://www.cancer.gov/dictionary?cdrid=634128 http://www.cancer.gov/dictionary?cdrid=634128]. Accessed on: 28 March 2012.</ref>
Definition - the separate tumour nodule must be:<ref>URL: [http://www.cancer.gov/dictionary?cdrid=634128 http://www.cancer.gov/dictionary?cdrid=634128]. Accessed on: 28 March 2012.</ref>
#>2 cm from the primary tumour.
#>2 cm from the primary tumour.
#Arises between the nearest (regional) [[lymph node]]s and the primary tumour.
#Arises between the nearest (regional) [[lymph node]]s and the primary tumour.
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*It is called "in-tranist", as it happens while the tumour is on the way to the regional lymph node.
*It is called "in-tranist", as it happens while the tumour is on the way to the regional lymph node.
*''In-transit metastases'' are seen in [[malignant melanoma]], [[merkel cell carcinoma]].
*''In-transit metastases'' are seen in [[malignant melanoma]], [[merkel cell carcinoma]].
*If a separate tumour nodule <= 2 cm from the primary tumour, it is known as ''satellitosis''.


=Specific sites=
=Specific sites=

Revision as of 15:17, 29 March 2012

Metastases are usually an ominous finding. They are not always obvious when in encounter; thus, they should be considered with every diagnosis of a malignant tumour.

Special types

In-transit metastasis

Definition - the separate tumour nodule must be:[1]

  1. >2 cm from the primary tumour.
  2. Arises between the nearest (regional) lymph nodes and the primary tumour.
    • The tumour presumably arises from a lymphatic that drains the tissue in which the primary tumour grew.

Notes:

  • It is called "in-tranist", as it happens while the tumour is on the way to the regional lymph node.
  • In-transit metastases are seen in malignant melanoma, merkel cell carcinoma.
  • If a separate tumour nodule <= 2 cm from the primary tumour, it is known as satellitosis.

Specific sites

Internal organs

Lymph node

Specific tumours

Melanoma

Osteosarcoma

See also

Reference

  1. URL: http://www.cancer.gov/dictionary?cdrid=634128. Accessed on: 28 March 2012.