LST

Wednesday 29 October 2008, Branislav Kunčak, M. D.

The term laterally spreading tumor (LST) refers to nonpolypoid slightly elevated neoplastic colorectal lesion (type 0-IIa) with a diameter larger than 10 mm.

Bigger image Endoscopy

Fig. 1

Laterally spreading adenoma of the ascending colon (chromoscopy using 0,5% indigocarmine solution).

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Fig. 2

The same lesion after submucosal injection of saline solution.

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Fig. 3

Flat adenoma (LST) of the caecum.

Keywords: laterally spreading tumor, laterally spreading type of nonpolypoid colorectal lesion, LST, nonpolypoid neoplastic lesion, type 0-IIa, colorectum, chromoscopy