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Published on: February 12, 2017
Subpleural intrapulmonary lymph node metastasis from colorectal cancer
Yuji Taniguchi1, Tomohiro Haruki, Shinji Fujioka
1Tottori University Hospital, Yonago, Japan.
Summary
Colorectal cancer can spread to intrapulmonary lymph nodes (IPLNs), which are rare sites of metastasis. This case highlights the possibility of IPLN metastasis when located near pulmonary metastases.
Area of Science:
- Oncology
- Thoracic Surgery
- Pathology
Background:
- Colorectal cancer commonly metastasizes to the lungs.
- Pulmonary metastases often present as discrete nodules.
- Intrapulmonary lymph nodes (IPLNs) are rarely involved in metastatic disease.
Observation:
- A 67-year-old male presented with pulmonary nodules secondary to colorectal cancer.
- Computed tomography identified three subpleural tumor shadows.
- The tumors were located in close proximity to each other.
Findings:
- Surgical resection revealed two pulmonary metastases and one metastasis to an intrapulmonary lymph node (IPLN).
- This represents a rare instance of IPLN metastasis.
- The IPLN metastasis was found adjacent to a primary pulmonary metastasis.
Implications:
- Metastasis to IPLNs, though uncommon, should be considered in the differential diagnosis of pulmonary nodules in cancer patients.
- The proximity of IPLN metastasis to pulmonary metastasis may influence surgical approach.
- Further research is needed to understand the incidence and behavior of IPLN metastasis.
