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Reninoma: an unusual cause of growth failure.

J Pediatr Endocrinol Metab

December 2024

Department of Endocrinology and Diabetes, Max Super Speciality Hospital, Saket, Delhi, India.

Introduction: Growth failure can result from various underlying causes, necessitating a thorough evaluation. Reninoma, a rare renin-secreting tumor, is an uncommon cause of hypertension, especially in paediatric patients, and has not been associated with growth failure until now.

Case Presentation: An 11-year-old girl presented with complaints of poor height gain, headaches, increased thirst, and vomiting.

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Article Synopsis
  • - A 28-year-old pregnant woman developed severe hypertension early in her pregnancy due to a renin-secreting renal tumor, which was a rare cause of hypertension during this stage.
  • - After being hospitalized for blood pressure management and diagnosed with a tumor, she underwent a robot-assisted partial nephrectomy at 16 weeks, which eliminated her hypertension.
  • - The successful outcome, with the delivery of a healthy baby at 40 weeks, highlighted the importance of early intervention, medication, and careful monitoring for pregnant women experiencing hypertension.
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Renin is crucial for blood pressure regulation and electrolyte balance, and its expressing cells arise from Foxd1+ stromal progenitors. However, factors guiding these progenitors toward renin-secreting cell fate remain unclear. Tcf21, a basic helix-loop-helix (bHLH) transcription factor, is essential in kidney development.

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Juxtaglomerular cell tumors (JCT) are uncommon renin-secreting tumors of the kidney with cytologic findings of JCT rarely reported. We describe a case of JCT in a 37-year-old man with uncontrolled hypertension that was cured by removal of the tumor via partial nephrectomy. Cytology material was prepared by scraping of the freshly sectioned tumor mass and stained with Diff-Quik and Papanicolaou stains.

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