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🧠 Mnemonic according to most common in order: “Cats Usually Sit Calmly Under Couch” C = Calcium oxalate (most common) U = Uric acid S = Struvite C = Calcium phosphate U = Uric acid again C = Cystine

Most common renal stone:
Anonymous voting

🪨 OX = OUCH ✖ Calcium OXalate

Renal stones which are laminated and irregular in outline are:
Anonymous voting

🦌 STAG = STRUvite = PhosphaTe + Proteus

Staghorn calculus is made of:
Anonymous voting

Oxalate stones are found in:
Anonymous voting

1. Overall most common → Calcium oxalate 2. UTI stone → Struvite 3. Radiolucent stone → Uric acid 4. Genetic stone → Cystine 5. HIV drug stone → Indinavir

🦠 UTI → UREASE → ALKALINE → PHOSPHATE (STRUvite)

Commonest stone in case of UTI:
Anonymous voting

🧪 STRUvite = UTI + UREASE + Alkaline

Not true about ‘Struvite Stones’ is:
Anonymous voting

🪨 “IN-DI-NI-VIR makes stones IN the kidney” (Indinavir → Stones)

2. Nephrolithiasis occurs with the toxicity of:
Anonymous voting

ليش؟ 🤔 Proteus bacteria تطلع إنزيم اسمه Urease 🦠 الإنزيم هذا يكسر اليوريا → أمونيا الأمونيا ترفع pH البول (يقعد قلوي) قلوي معناها حصوات اللي تتكون اسمها: 👉 Triple phosphate stones (ونسموها Struvite stones = Magnesium + Ammonium + Phosphate) خصائص: 1. Staghorn calculi 2. Chronic UTI 3. Radio-opaque in xray 🦠 PROTEUS likes TRIPLE meals 🍽️🍽️🍽️ → Proteus → Triple phosphate

​1. Renal calculi associated with proteus infection:
Anonymous voting

#Urology

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