核医学と放射線治療

An Unusual Presentation of Needle Tract Seeding from Colonic Cancer

Abstract

Narendra Pandit, Harjeet Singh, Gautham Krishnamurthy and Verma GR

Needle tract seeding is a recognized complication of obtaining tissue of intraabdominal malignancy by percutaneous techniques. While the exact mechanism of needle tract seeding is still being hypothesized, the knowledge of this concept has led to guidelines avoiding such techniques in a resectable tumor especially tumors of hepatobiliary origin. Here we present a case of colonic carcinoma with a polypoidal soft tissue mass at the site of needle tract. The needle tract tumor could have probably indicated the poor response and should be considered as a poor prognostic factor. This technique should be avoided in resectable colonic tumors.