Incidence of malignancy in peripheral lymph node biopsy.

Area of Science:

• Oncology
• Pathology
• Surgical Pathology

Background:

• Lymph node biopsies are a common diagnostic procedure.
• Understanding the yield and patterns of malignancy in lymph node biopsies is essential for clinical management.

Purpose of the Study:

• To review lymph node biopsy procedures and analyze diagnostic yields.
• To identify characteristics associated with malignancy in lymph node biopsies.

Main Methods:

• Retrospective review of 62 lymph node biopsy procedures over a 12-month period.
• Analysis of diagnostic yield, malignancy rates, and specific clinical features.

Main Results:

• Overall diagnostic yield was 56.5%, with malignancy found in 53.2% of cases.
• Metastatic carcinoma comprised 72.2% of malignant lymph nodes; lymphoma-leukemia accounted for 27.3%.
• Supraclavicular lymph nodes showed the highest malignancy incidence (75%), particularly in patients >55 years, with short duration, and prior malignancy history.

Conclusions:

• Lymph node biopsy is an effective diagnostic tool for malignancy.
• Supraclavicular lymph node enlargement and specific clinical factors are strong indicators of malignancy.
• Knowledge of lymphatic drainage is vital for identifying primary tumor sites in metastatic cases.