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Related Concept Videos

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Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
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Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
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Reply to Borewad et al. Comment on "Rao et al. The Oncological Outcome of Postoperative Radiotherapy in Patients with Node-Negative Early-Stage (T1/T2/N0) Oral Squamous Cell Carcinoma and Perineural Invasion: A Meta-Analysis. <i>Cancers</i> 2025, <i>17</i>, 862".

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Related Experiment Video

Updated: Mar 28, 2026

Quantification of Tumor Cell Adhesion in Lymph Node Cryosections
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Cervical lymph node metastases from remote primary tumor sites.

Fernando López1,2, Juan P Rodrigo1,2, Carl E Silver3

  • 1Department of Otolaryngology, Hospital Universitario Central de Asturias, Oviedo, Spain.

Head & Neck
|December 30, 2015
PubMed
Summary

Metastatic disease to the neck, often from remote sites, presents a diagnostic challenge. Advanced imaging and molecular markers aid in locating unknown primary tumors for potentially curable treatment.

Keywords:
cervical lymph nodediagnosisneck dissectionnon-head and neck cancerunknown primary

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Area of Science:

  • Oncology
  • Head and Neck Surgery
  • Diagnostic Imaging

Background:

  • Malignant cervical lymphadenopathy typically arises from lymphomas or head and neck primaries.
  • Occasionally, metastatic disease from remote, infraclavicular sites presents as isolated cervical lymphadenopathy, complicating diagnosis.
  • Identifying the primary tumor is crucial for effective management.

Purpose of the Study:

  • To review the diagnostic approaches for identifying unknown primary tumors in cases of cervical lymphadenopathy.
  • To discuss the role of advanced imaging and molecular markers in detecting remote primary sites.
  • To highlight the complexities and multidisciplinary management of metastatic cervical disease from unknown primaries.

Main Methods:

  • Histology and immunohistochemistry for tumor characterization.
  • Molecular marker analysis to identify primary tumor origin.
  • 18F-fluoro-2-deoxyglucose positron emission tomography combined with CT (FDG-PET/CT) for detecting remote primary tumors.

Main Results:

  • FDG-PET/CT significantly enhances the detection of unknown primary tumors, especially those in remote locations.
  • While often incurable, metastatic cervical disease from remote sites can achieve meaningful survival with appropriate local treatment.
  • Management requires a comprehensive, multidisciplinary approach.

Conclusions:

  • Cervical lymphadenopathy can originate from unexpected remote primary tumors.
  • Integrated diagnostic strategies, including advanced imaging and molecular analysis, are essential for accurate tumor localization.
  • Multidisciplinary care is paramount for optimizing outcomes in patients with metastatic cervical disease of unknown primary origin.