Cervical Lymphadenopathy

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Intro & Anatomy - Neck Node Know-How

  • Cervical Lymphadenopathy: Enlargement of neck lymph nodes.

  • Node Assessment:

    • Normal: < 1 cm (Jugulodigastric up to 1.5 cm), mobile, soft.
    • Abnormal: > 1 cm, firm, matted, fixed; suggests pathology.
  • Neck Node Levels (Robbins):

    • I: Submental (IA), Submandibular (IB)
    • II: Upper Jugular (IIA/IIB by SAN)
    • III: Middle Jugular
    • IV: Lower Jugular
    • V: Posterior Triangle (VA/VB)
    • VI: Anterior Compartment (central nodes)
    • (VII): Superior Mediastinal
  • 📌 Mnemonic (I-VI): Smart University Medicos Love Practical Anatomy. (S-Submental/mandibular, U-Upper, M-Middle, L-Lower Jugular, P-Posterior, A-Anterior).

  • Level IV (Supraclavicular) Nodes: Left-sided (Virchow's node) may indicate gastric, thoracic, or pelvic malignancy.

Etiology - The Culprit Countdown

  • Infectious:
    • Bacterial: S. aureus, S. pyogenes (acute, tender); TB (scrofula: chronic, matted); B. henselae (cat scratch).
    • Viral: EBV (mono: posterior triangle, fever, pharyngitis); CMV; HIV; Adenovirus.
    • Parasitic: Toxoplasmosis (posterior cervical).
  • Inflammatory (Non-infectious):
    • Kawasaki Disease (children <5 yrs, fever >5 days, mucocutaneous signs, coronary risk).
    • Sarcoidosis (bilateral, firm, non-tender, non-caseating granulomas).
    • Kikuchi-Fujimoto Disease (young adults, fever, self-limiting).
  • Neoplastic:
    • Primary: Lymphoma (Hodgkin's, NHL), Leukemia.
    • Metastatic: SCC (H&N primary: hard, fixed); Thyroid Ca; Nasopharyngeal Ca (NPC - Level V).
    • 📌 VIRCHOW (GI Malignancy): Left supraclavicular node (Troisier's sign).

⭐ Virchow's node (left supraclavicular) strongly suggests metastatic gastric cancer (Troisier's sign), but also other abdominal/thoracic malignancies.

Clinical Evaluation - Detective Work

  • History:
    • Duration: Acute (<2 wks), Chronic (>6 wks).
    • Symptoms: Pain, fever, B-symptoms (weight loss, night sweats) ⚠️.
    • Exposures: TB, smoking, HIV risks. Prior malignancy.
  • Examination (📌 L S C T M):
    • Location: Level; supraclavicular (Virchow's) ⚠️.
    • Size: >1.5 cm abnormal; >2 cm red flag.
    • Consistency: Rubbery (lymphoma), hard (mets), fluctuant (abscess).
    • Tenderness: Inflammatory.
    • Mobility: Fixed/matted (TB, malignancy).
    • Check primary sites (ENT, scalp, chest).

⭐ Lymphomatous nodes: Typically non-tender, firm, rubbery; may be matted.

  • Red Flags (prompt urgent workup):
    • Age >40
    • Duration >4-6 wks
    • Size >2 cm
    • Hard/fixed consistency
    • Supraclavicular location
    • B-symptoms (fever, night sweats, weight loss)
    • History of cancer

Investigations - Unmasking the Mass

  • Initial Approach:
    • Ultrasound (USG) Neck:
      • Characterizes node: size, shape, hilum (absent/present), echotexture, vascularity.
      • Guides FNAC.
      • Malignant signs: Round, hypoechoic, absent hilum, calcification, necrosis, peripheral vascularity.
    • Fine Needle Aspiration Cytology (FNAC):

      ⭐ FNAC is the initial diagnostic test of choice for most palpable cervical lymph nodes.

      • High sensitivity & specificity.
  • If FNAC Inconclusive/Suspicious:
    • Repeat FNAC.
    • Core Needle Biopsy (esp. lymphoma).
    • Excision Biopsy: Gold standard; for definitive diagnosis or lymphoma subtyping.
  • Staging & Primary Search (if malignancy confirmed/suspected):
    • Contrast-Enhanced CT (CECT) Neck ± Chest.
    • MRI: Superior soft tissue detail.
    • PET-CT: Unknown primary, staging, recurrence.
    • Panendoscopy (Direct Laryngoscopy, Esophagoscopy, Bronchoscopy): For suspected SCC.
  • Blood Tests: CBC, ESR, LDH; specific markers (e.g., viral serology, tumor markers if indicated).

Ultrasound: Normal vs Malignant Cervical Lymph Node

High‑Yield Points - ⚡ Biggest Takeaways

  • Persistent cervical lymphadenopathy (>2 weeks) mandates further investigation.
  • Supraclavicular nodes, especially left (Virchow's), strongly indicate underlying malignancy (often GI).
  • Posterior triangle nodes are frequently associated with nasopharyngeal carcinoma (NPC) or lymphoma.
  • FNAC is the initial investigation of choice for most palpable cervical nodes.
  • Tuberculosis (scrofula) is a key differential in India, presenting as matted nodes, possibly with a cold abscess.
  • Metastatic Squamous Cell Carcinoma (SCC) is the most common malignant cause in adults.

Practice Questions: Cervical Lymphadenopathy

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Anterior Mediastinal nodes are included in which level of lymph nodes?

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Flashcards: Cervical Lymphadenopathy

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_____ incision is used to access the floor of the maxillary sinus in the case of maxillary carcinoma.

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_____ incision is used to access the floor of the maxillary sinus in the case of maxillary carcinoma.

WeberFerguson

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