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Juxtaglomerular cell tumor

G Connor, C M Bennett, R R Lindstrom

    Nephron
    |January 1, 1978
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    Summary
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    A rare renin-secreting tumor caused hypertension in a teen. Surgical removal cured the condition, highlighting the importance of plasma renin activity testing for diagnosing primary reninism.

    Area of Science:

    • Endocrinology
    • Nephrology
    • Pediatric Hypertension

    Background:

    • Primary reninism is a rare condition causing hypertension due to excessive renin production.
    • Hypertension in adolescents necessitates thorough investigation to identify underlying causes.

    Observation:

    • A 15-year-old female presented with benign hypertension, normal electrolytes, and unremarkable imaging studies (aortagram, IV pyelogram).
    • Diagnosis was challenging, relying heavily on significantly elevated plasma renin activity (PRA).

    Findings:

    • Selective renal vein catheterization identified a renin-secreting tumor.
    • Tumor resection led to the normalization of blood pressure and PRA.
    • Propranolol effectively reduced PRA and blood pressure pre-operatively.

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    Implications:

    • This case underscores the diagnostic value of plasma renin activity in primary reninism.
    • Early detection and surgical management of renin-secreting tumors can resolve adolescent hypertension.
    • Pharmacological management with beta-blockers can be a useful adjunct prior to definitive treatment.