Year: 2019 Vol: 1 Issue: 5


  • International Medicine
  • Worldwide Medicine
  • International Medicine

Case Report

A unique case of transitional cell carcinoma of renal pelvis in a patient with Lynch syndrome

Chandra Sanwal1, Karim Nooruddin1, Thang Nguyen1, Michael Bailey2, Aaron Moon3, Antonio Guzman1, Jacqueline Phillips1
1Graduate Medical Education, Corpus Christi Medical Center, Corpus Christi, Texas
2Department of Pathology, Corpus Christi Medical Center, Corpus Christi, Texas
2Radiology Associates, Corpus Christi, Texas

International Medicine 2019; 1(5): 286-291 | DOI: 10.5455/im.56055      PDF


Abstract


Lynch syndrome-associated transitional cell carcinoma of the upper urinary tract is uncommon. Lynch syndrome is a well-known inherited condition with particularly increased risk of colorectal cancers and a lesser extent other types of cancers. We present a rare case of urothelial cancer associated with Lynch syndrome from the time of its diagnosis to its multidisciplinary management to date. This case report outlines the unique characteristics of the case. The patient was positive for a mutation in the MLH1 gene, a known mutation of Lynch syndrome, which has a sparse association to Lynch syndrome-related urothelial carcinoma compared to other genes, e.g., MSH2. The patient's second-degree relative had confirmed Lynch syndrome with the same MLH1 genetic mutation and had colorectal cancer. The first-degree female relative of the patient with urothelial cancer had breast cancer, also not commonly associated with Lynch syndrome. The patient's age at the time of diagnosis of urothelial cancer was 46 years, which is at the lower end of the spectrum of the average age of Lynch syndrome associated with urothelial cancers. This paper also presents a review of the literature regarding upper urinary tract transitional cell carcinoma, its association with Lynch syndrome and various opinions on screening guidelines for urothelial cancer in relatives of a patient diagnosed with Lynch syndrome.

Keywords: hereditary nonpolyposis colorectal cancer, Lynch syndrome, renal pelvis, transitional cell carcinoma, urinary tract

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