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Related Experiment Videos

Peripherally located occult lung cancer with AMFR expression.

Masaya Tamura1, Yasuhiko Ohta, Makoto Oda

  • 1Department of Thoracic Surgery, Kanazawa University School of Medicine, Kanazawa, Japan.

Annals of Thoracic and Cardiovascular Surgery : Official Journal of the Association of Thoracic and Cardiovascular Surgeons of Asia
|July 24, 2003
PubMed
Summary

This case study highlights a rare instance of double primary lung cancer metastasizing to the stomach, identified through sputum cytology and CT scans. Early detection and monitoring are crucial for managing occult lung cancers, especially in peripheral regions.

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Area of Science:

  • Oncology
  • Pulmonology
  • Gastroenterology

Background:

  • Occult lung cancers present diagnostic challenges, often detected late.
  • Peripheral lung cancers are frequently associated with poor prognosis.
  • Autocrine motility factor receptor (AMFR) expression may play a role in cancer progression.

Observation:

  • A 67-year-old man with positive sputum cytology had an elusive primary malignancy.
  • CT revealed peripheral lung nodules, later diagnosed as double primary lung cancer with gastric metastasis.
  • Tumors and sputum cells shared identical AMFR immunoreactivity.

Findings:

  • The patient was diagnosed with double primary lung cancer metastasizing to the stomach.
  • Four out of 38 occult lung cancers (10.5%) in the institution were peripheral.

Related Experiment Videos

  • Three of four patients with radiologically occult peripheral lung cancer died within 24 months post-surgery, often with venous invasion.

    • Implications:

    • Radiologically occult peripheral lung cancers have a poor prognosis, even with small primary tumors.
    • Venous invasion is a significant indicator of poor outcomes in these cases.
    • Close monitoring for distant metastasis is essential for patients diagnosed with occult peripheral lung cancer.