Unusual Presentation of a Renal Vein Invading Clear Cell Renal Cell Carcinoma with Non-Specific Gastrointestinal Symptomatology: A Case Report

Introduction: We are reporting a case of 62 year old male patient with central obesity presented with nonspecific gastrointestinal symptoms which was misdiagnosed and treated according to its symptomology. After complete evaluation found to have a large right Renal Cell Carcinoma (RCC) with involvement of right renal vein and later he underwent right radical nephrectomy. The presentation of RCC is variable and most of the times it presents with nonspecific symptoms. The classic triad of loin pain, hematuria and abdominal mass is found only in 4-17 % of cases. The incidence of RCC is 2.2% and mortality rate is 1.8% worldwide, in 2018. In India, its incidence is around 1.3% and mortality is 1.3% in 2018. It occurs predominantly in the 6th to 8th decade of life with median age at diagnosis around 64 years. Due to earlier detection of these tumors, the incidence has increased threefold than the mortality. One of the established risk factor for RCC is cigarette smoking. As the use of cigarette smoking increases the stage of RCC advances further.