title: Eccrine Porocarcinoma presenting as an abdominal wall mass in a patient with ulcerative colitis-A rare case report.
abstract: BACKGROUND
  Eccrine porocarcinoma (EPC) is a rare malignancy of eccrine sweat glands. It is often seen during the sixth to eighth decades of life. We report the first case of eccrine porocarcinoma arising on the abdomen of a 21-year-old patient with ulcerative colitis.
  
  
  METHODS
  A 21-Year-old female presented to emergency department with a one month history of an enlarging mass over left lower abdomen. Abdominal examination revealed a slightly erythematous, nodular and non-mobile firm mass in left lower quadrant. There was superficial ulceration with slight serous discharge. CT scan of the abdomen and pelvis with contrast revealed a superficial cystic lesion over the anterior abdominal wall, provisionally diagnosed as sebaceous cyst. Incision and drainage were performed and on follow-up, no signs of healing were observed and the patient subsequently underwent surgical excision. Histopathological examination revealed an eccrine porocarcinoma.
  
  
  CONCLUSIONS
  EPC is a rare and aggressive tumor. It may occur de novo or as a result of malignant transformation of an eccrine poroma. A long period of clinical history is often encountered. It usually occurs on the lower extremities followed by the, trunk, head and neck, and upper extremities. The clinical picture usually consists of a painless nodule or papule. Treatment is wide local excision. No strong evidence exists for adjuvant therapy. The risk of local recurrence is about 20%.
  
  
  CONCLUSIONS
  High index of suspicion is required for diagnosis of EPC. Early diagnosis is achieved by histopathological examination and early definitive surgical excision leads to excellent results.
authors.affiliation: Hurley Medical Center, Trauma Services-7W, One Hurley Plaza, Flint, MI 48439, United States.
authors.forename: Narendrasinh
authors.initials: N
authors.lastname: Parmar
authors.affiliation: Hurley Medical Center, Trauma Services-7W, One Hurley Plaza, Flint, MI 48439, United States. Electronic address: mmohame4@hurleymc.com.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Mohamed
authors.affiliation: Hurley Medical Center, Trauma Services-7W, One Hurley Plaza, Flint, MI 48439, United States.
authors.forename: Adel
authors.initials: A
authors.lastname: Elmoghrabi
authors.affiliation: Hurley Medical Center, Trauma Services-7W, One Hurley Plaza, Flint, MI 48439, United States.
authors.forename: Michael
authors.initials: M
authors.lastname: McCann
keywords: Abdominal wall; Carcinoma; Eccrine porocarcinoma; Mass; Poroma; Sweat gland