TY - JOUR
T1 - Collision tumor in form of primary adenocarcinoma and neuroendocrine carcinoma of the duodenum
AU - Peng, Lan
AU - Schwarz, Roderich E.
PY - 2012
Y1 - 2012
N2 - Collision tumor is a rare phenomenon characterized by coexistence of completely distinct and independent tumors at the same body location. Collision tumors have been reported in different sites. However, they are extremely uncommon in the duodenum. We report the case of a 52-year old man with a collision tumor in the third portion of the duodenum with two distinct tumors of primary adenocarcinoma and neuroendocrine carcinoma, and both tumors coexisting within a single metastatic lymph node. Immunohistochemistry studies were performed to conclude that this was a case of collision cancer. To the best of our knowledge, this is the first collision tumor case reported to date at this location, and the first report of lymph node with a collision metastasis from a collision tumor. Such tumor is very rare and may thus provide diagnostic challenges. This report also provides a review of other cases on duodenal collision tumors.
AB - Collision tumor is a rare phenomenon characterized by coexistence of completely distinct and independent tumors at the same body location. Collision tumors have been reported in different sites. However, they are extremely uncommon in the duodenum. We report the case of a 52-year old man with a collision tumor in the third portion of the duodenum with two distinct tumors of primary adenocarcinoma and neuroendocrine carcinoma, and both tumors coexisting within a single metastatic lymph node. Immunohistochemistry studies were performed to conclude that this was a case of collision cancer. To the best of our knowledge, this is the first collision tumor case reported to date at this location, and the first report of lymph node with a collision metastasis from a collision tumor. Such tumor is very rare and may thus provide diagnostic challenges. This report also provides a review of other cases on duodenal collision tumors.
KW - Collision metastasis
KW - Collision tumor
KW - The third portion of duodenum
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U2 - 10.4081/rt.2012.e20
DO - 10.4081/rt.2012.e20
M3 - Review article
C2 - 22826777
AN - SCOPUS:84859708059
SN - 2036-3605
VL - 4
SP - 64
EP - 66
JO - Rare Tumors
JF - Rare Tumors
IS - 2
ER -