Collision tumour

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Collision tumour is a tumour that developed from two separate tumours that are pathologically distinct.^[1]

General

Very rare.

Microscopic

Features:

Two histologically distinct tumours.

DDx:

Tumour with different histologic patterns, e.g. unclassified renal cell carcinoma.
Tumour with different histologic grades.

See also

Cancer.

References

↑ URL: http://medical-dictionary.thefreedictionary.com/collision+tumor. Accessed on: 11 May 2015.

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