Differential Diagnosis for LUQ Pain with 2 Parapelvic Cysts on Ultrasound Abdomen
- Single Most Likely Diagnosis
- Simple renal cysts with referred pain: The presence of parapelvic cysts, which are benign fluid-filled structures near the kidney, can cause discomfort or pain due to their size or location. This pain can sometimes be referred to the left upper quadrant (LUQ) of the abdomen.
- Other Likely Diagnoses
- Pyelonephritis or kidney infection: Infection of the kidney can cause pain in the flank or back that may radiate to the LUQ, and the presence of cysts could potentially increase the risk of infection.
- Nephrolithiasis (kidney stones): Stones in the kidney can cause severe pain, often radiating from the back to the abdomen, and could be associated with parapelvic cysts.
- Diverticulitis: Inflammation of a diverticulum in the colon can cause LUQ pain if the involved segment is near the spleen or kidney.
- Do Not Miss Diagnoses
- Renal cell carcinoma: Although less common, it's crucial to consider the possibility of a malignant process, especially if the cysts are complex or if there are other suspicious findings on imaging.
- Aortic dissection or aneurysm: These are life-threatening conditions that can cause severe back or abdominal pain and must be ruled out, especially in patients with risk factors.
- Splenic infarct or rupture: Conditions affecting the spleen can cause LUQ pain and must be considered, especially if there's a history of trauma or underlying spleen disease.
- Rare Diagnoses
- Polycystic kidney disease (PKD): A genetic disorder characterized by the growth of numerous cysts filled with fluid in the kidneys, which can cause pain and other complications.
- Hydronephrosis due to ureteropelvic junction obstruction: A condition where a blockage occurs at the junction where the ureter attaches to the kidney, potentially causing pain and cyst formation.
- Retroperitoneal fibrosis: A rare condition characterized by the proliferation of fibrous tissue in the retroperitoneum, which can encase and obstruct structures like the ureters, leading to pain and other symptoms.