Evaluate the following pediatric patients presenting with localized or generalized lymphadenopathy. Match each clinical vignette with the most appropriate specific management or pharmacotherapy.
- A 3-year-old girl presents with a 4-week history of a progressively enlarging, painless submandibular lymph node. She is afebrile. Examination shows a firm 3.5-cm node with overlying thinned, violaceous skin. A tuberculin skin test is negative.Complete surgical excision of the affected node
- A 6-year-old boy presents with a 2-week history of low-grade fever and a tender left axillary lymph node. Examination reveals a 4-cm fluctuant node and a crusted erythematous papule on his left hand. The family recently adopted a stray kitten.Five-day course of oral azithromycin
- A 4-year-old boy presents with a 3-day history of high fever and a rapidly enlarging anterior cervical lymph node. Examination shows a 5-cm, exquisitely tender, warm, and erythematous node. He appears moderately ill and has restricted neck movement.Empiric intravenous clindamycin
- A 9-year-old boy presents with acute high fever, chills, and an extremely tender right inguinal lymph node. Examination reveals a 4-cm fluctuant node and a 1-cm ulcerated skin lesion with a central eschar on his right calf. He recently skinned wild rabbits with his grandfather.Intravenous gentamicin
- A 15-year-old girl presents with 3 weeks of fatigue, low-grade fever, and prominent, bilateral, non-tender posterior cervical lymphadenopathy. Rapid streptococcal antigen and heterophile antibody tests are negative. She recently traveled to a rural area where she consumed undercooked wild game.Reassurance and symptomatic care without targeted antimicrobial therapy
Answer
The 3-year-old with the violaceous node matches complete surgical excision (NTM); the 6-year-old with kitten exposure matches azithromycin (Cat-Scratch Disease); the 4-year-old with the acute inflammatory node matches intravenous clindamycin (Pyogenic bacterial lymphadenitis); the 9-year-old with rabbit exposure matches intravenous gentamicin (Tularemia); the 15-year-old with undercooked game exposure matches reassurance and symptomatic care (Toxoplasmosis).
Each patient requires a distinct approach. NTM lymphadenitis (violaceous skin) requires complete surgical excision to avoid chronic sinus tracts. Cat-scratch disease (B. henselae) is treated with azithromycin to speed resolution. Acute bacterial lymphadenitis (S. aureus/GAS) requires coverage for Gram-positive organisms, making clindamycin ideal. Ulceroglandular tularemia requires an aminoglycoside like gentamicin. Finally, acute toxoplasmosis in an immunocompetent adolescent is a self-limiting infectious mononucleosis-like illness that requires only supportive care without anti-parasitic drugs.
Step-by-Step Solution
Key Concept
Diagnosis and management of pediatric lymphadenopathy syndromes, including atypical mycobacteria, zoonotic infections, and pyogenic bacteria.