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Peripheral lymphadenopathy: approach and diagnostic tools.

Shahrzad Mohseni1, Abolfazl Shojaiefard2, Zhamak Khorgami2

  • 1Department of Surgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran;

Iranian Journal of Medical Sciences
|April 23, 2014
PubMed
Summary

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Peripheral lymphadenopathy (LAP) can stem from infections or malignancy. A thorough patient history, physical exam, and diagnostic tests, including biopsies, are crucial for accurate diagnosis of enlarged lymph nodes.

Area of Science:

  • Immunology
  • Oncology
  • Infectious Diseases

Background:

  • Peripheral lymph nodes filter extracellular fluid and typically measure less than 1 cm.
  • Peripheral lymphadenopathy (LAP) often results from benign infections but can indicate malignancy.
  • Localized LAP, particularly in the head and neck, is common, while supraclavicular LAP suggests malignancy.

Purpose of the Study:

  • To review the diagnostic approach to peripheral lymphadenopathy.
  • To highlight the differential diagnoses of LAP, including infectious and malignant causes.
  • To emphasize the importance of clinical evaluation and diagnostic work-up for LAP.

Main Methods:

  • Review of clinical presentation and diagnostic modalities for peripheral lymphadenopathy.
  • Analysis of etiological factors based on geographical location and patient demographics.
Keywords:
BenignDiagnosisLocalizationLymphadenopathyMalignant

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  • Emphasis on the diagnostic value of history, physical examination, laboratory tests, imaging, and tissue biopsy.

    • Main Results:

    • Etiology of LAP varies geographically, with tuberculosis being common in tropical areas.
    • Cervical lymph node involvement is frequent, often due to infection, but supraclavicular LAP is linked to malignancy.
    • Fine needle aspiration biopsy and excisional biopsy are considered the gold standard for tissue diagnosis.

    Conclusions:

    • Patient age and environmental exposures, combined with clinical assessment, guide the diagnostic process for LAP.
    • A stepwise approach involving history, physical examination, and investigations is essential for diagnosing peripheral lymphadenopathy.
    • Accurate diagnosis of LAP relies on integrating clinical findings with laboratory tests, imaging, and definitive tissue diagnosis.