# The Natural History of Minimally Symptomatic Nonobstructing Calyceal Stones

> **NCT04071340** · — · COMPLETED · sponsor: **Assiut University** · enrollment: 96 (actual)

## Conditions studied

- Renal Stone

## Interventions

- **DEVICE:** non-contrast MSCT
- **DEVICE:** Abdominal ultrasonography
- **DIAGNOSTIC_TEST:** Urine analysis
- **DIAGNOSTIC_TEST:** Urine culture

## Key facts

- **NCT ID:** NCT04071340
- **Lead sponsor:** Assiut University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2019-09-01
- **Primary completion:** 2024-06-01
- **Final completion:** 2025-07-01
- **Target enrollment:** 96 (ACTUAL)
- **Last updated:** 2025-07-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04071340

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04071340, "The Natural History of Minimally Symptomatic Nonobstructing Calyceal Stones". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT04071340. Licensed CC0.

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