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[Liver metastases of unknown origin.]
A M Halldórsdóttir1, B A Agnarsson, H Tulinius
1Laboratory of pathology, Landspitali University Hospital, Hringbraut, 101 Reykjavík, Iceland. jongj@landspitali.is.
Laeknabladid
|October 5, 2006
Summary
Liver metastases of unknown origin are common. Pancreatic, lung, and colorectal cancers were the most frequent primary sources, with adenocarcinoma being the predominant histology.
Area of Science:
- Oncology
- Pathology
Context:
- Liver metastases represent a significant proportion of cancers with unknown primary origin.
- Approximately 5% of all cancer patients present with a tumor of unknown origin, and 10-30% of these have liver metastases.
Purpose:
- To compile information on the origin and histology of liver metastases of unknown origin.
- To identify common primary tumor sites and histological types in cases of liver metastases where the primary tumor was initially unknown.
Summary:
- A retrospective study analyzed 84 cases of liver metastases of unknown origin between 1987-1996.
- The primary tumor was identified in two-thirds of cases, with the most common origins being pancreas, lung, and colon/rectum.
- Adenocarcinoma was the most frequent histological diagnosis, accounting for 60% of cases.
Impact:
- This study aids in diagnosing the primary source of liver metastases, improving patient management.
- Findings highlight the importance of considering pancreatic, lung, and colorectal cancers in the differential diagnosis of liver metastases of unknown origin.
