Solid Ectopic Cervical Thymus: A Case Report

Ashraf A Alnosair1, Lojain A Alnosair2, Ali A Almohammed Saleh3

  • 1Pediatric Surgery, Almoosa Specialist Hospital, Al-Ahsa, SAU.

Cureus
|June 24, 2022
PubMed

Insights

Ectopic cervical thymus, a rare condition, can cause neck masses in infants. Early diagnosis is crucial for appropriate management and to prevent complications.

Area of Science:

  • Pediatric Surgery
  • Developmental Biology
  • Immunology

Background:

  • The thymus gland, a primary lymphoid organ, is typically situated in the anterior mediastinum.
  • Aberrant locations of the thymus, such as along the thymopharyngeal canal, are uncommon but can occur.
  • Ectopic thymic tissue may present as neck masses, potentially causing respiratory or feeding issues in infants.

Observation:

  • A case report details a 10-month-old male infant with a nine-month history of a left-sided neck swelling.
  • Initial investigations suggested four potential differential diagnoses for the neck mass.
  • Surgical excision was performed for definitive histopathological diagnosis.

Findings:

  • Histopathological examination confirmed the presence of an ectopic cervical thymus.
  • The ectopic thymus was identified as the cause of the pediatric neck mass.
  • This case highlights a rare presentation of thymic tissue outside its normal mediastinal location.

Implications:

  • Considering ectopic cervical thymus in the differential diagnosis of pediatric neck masses is essential.
  • Accurate diagnosis can prevent unnecessary invasive procedures and potential surgical complications.
  • Understanding rare anatomical variations of the thymus aids in pediatric surgical planning and patient care.