RESUMO
Granular cell tumors (GCTs) are uncommon tumors. They are believed to be neuronal in origin and are usually found in the head and/or neck area of the body. They have also been reported in various locations of the gastrointestinal (GI) system, usually discovered during routine screening colonoscopy. We report a case of GCT in a 58-year-old asymptomatic African American female as a metachronous tumor of a well-differentiated adenocarcinoma of the sigmoid colon, which was an incidental finding in screening colonoscopy. To our knowledge, this is the first case with GCT identified as a metachronous tumor following an adenocarcinoma of the colon.
RESUMO
Desmoid tumors are rare neoplasms. They occur mostly in females in their reproductive age and may present with pelvic pain and intestinal obstruction. These connective tissue neoplasms are because of uncontrolled proliferation of differentiated myofibroblasts. The cells may synthesize vast amounts of collagen fibers in response to various stimuli. We describe a case of a pelvic desmoid tumor simulating a uterine leiomyoma recurrence. We review the literature on the epidemiology and the treatment options for desmoid tumors and suggest a strong index of suspicion when a new pelvic mass arises in an adult with previous pelvic surgery. We advise a planned multidisciplinary treatment approach at the first hint of the diagnosis of desmoid tumor.
