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Parapharyngeal rhabdomyoma.

R S Shapiro, S E Stool, J B Snow

    Archives of Otolaryngology (Chicago, Ill. : 1960)
    |May 11, 1975
    PubMed
    Summary
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    Extracardiac adult-type rhabdomyomas are rare benign tumors. This case highlights a unique parapharyngeal rhabdomyoma in a child with atypical histology and no capsule, differing from previously reported cases.

    Area of Science:

    • Pediatric Oncology
    • Surgical Pathology

    Background:

    • Rhabdomyoma is a rare benign tumor of striated muscle.
    • Extracardiac adult-type rhabdomyomas are exceptionally uncommon, particularly in pediatric patients.
    • Literature review identified 20 cases of extracardiac adult-type rhabdomyoma in the head and neck, typically encapsulated and easily excised.

    Purpose of the Study:

    • To report a unique case of parapharyngeal rhabdomyoma in a young child.
    • To describe the atypical histological features and lack of encapsulation in this pediatric case.
    • To differentiate this case from previously documented extracardiac adult-type rhabdomyomas.

    Main Methods:

    • Case presentation of a 22 1/2-month-old female with a parapharyngeal mass.
    • Histopathological examination of the tumor.

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  • Review of relevant world literature on extracardiac adult-type rhabdomyomas.

    • Main Results:

    • The patient presented with a parapharyngeal rhabdomyoma.
    • The tumor exhibited atypical histology.
    • Unlike previously reported cases, this rhabdomyoma lacked a capsule and was not easily excised.

    Conclusions:

    • Pediatric parapharyngeal rhabdomyomas can present with atypical features, including lack of encapsulation.
    • This case expands the understanding of rhabdomyoma variability in children.
    • Surgical management may be more complex in cases with atypical histology and infiltrative growth patterns.