ABSTRACT
CASE: A 78-year-old female with a history of recurrent nephrolithiasis and left ureteral reconstruction presented to our institution with hematuria, flank pain, anorexia and weight loss. 3-4 months prior, she had similar symptoms in her home country and was treated with multiple courses of antibiotics. She attempted to present to the US for evaluation earlier, but was unable to due to COVID. She first presented to a nearby US hospital and was diagnosed with an atrophic kidney with a superimposed infection based on imaging and labs. An EGD/ Colonoscopy done for her weight loss was unrevealing. She was discharged on antibiotics and told to follow up for possible nephrectomy. 1 days later, she presented to our institution with continued symptoms. Repeat CT was concerning for emphysematous pyelonephritis. Vital signs were unremarkable. Labs showed no leukocytosis, normal creatinine, hypercalcemia to 13.0 and urinalysis showed hematuria, pyuria and proteinuria. She was initially treated with IV antibiotics and a percutaneous nephrostomy for source control. To continue work up for her weight loss, a CT chest was done that showed multiple lung nodules and a re-review of the CT abdomen noted a T12 lytic lesion. 2 weeks into her admission, she had a left nephrectomy. Pathology revealed an invasive, grade 3, poorly differentiated squamous cell carcinoma arising from the renal pelvis, with lymphovascular invasion. A biopsy of the T12 lesion was consistent with metastasis. Due to her functional status and aggressive nature of her malignancy, palliative therapies were recommended. Patient's course was further complicated by ileus, massive aspiration and spinal cord compression from the T12 lesion. She passed away on hospital day 45. IMPACT/DISCUSSION: Squamous cell carcinoma of the renal pelvis is a rare malignancy. Most present at an advanced stage with a long history of nonspecific symptoms, such as hematuria and/or flank pain, which are typically attributed to recurrent nephrolithiasis;one of the most well-documented risk factors. Additionally, there are no characteristic findings on imaging, making radiological differentiation between renal SCC and other chronic infectious processes difficult. Often there is no suspicion for malignancy until the pathology results. For these reasons, renal SCC should be considered in patients who have underlying risk factors. One may also benefit from a renal biopsy, which can be done before a nephrectomy and has been shown to have a high degree of diagnostic accuracy. Adding to this diagnostic challenge, our patient's care was delayed due to COVID, demonstrating the importance of considering alternative diagnoses when patients have deferred presentations and fractured workups. CONCLUSION: Consider the diagnosis of renal SCC in patients with recurrent nephrolithiasis, UTIs, unexplained hematuria and/or flank pain and refer for a renal biopsy if appropriate. Be mindful of the impact of fragmented and delayed medical care on vulnerable patients.