Schwannoma in the porta hepatis - laparoscopic excision under laparoscopic ultrasound guidance.

Abstract

Schwannomas are usually benign tumors attached to peripheral nerves and are rarely found in the gastrointestinal tract. Schwannomas in the porta hepatis are extremely rare, with only 15 cases described in the literature to date. A 22-year-old female patient presented with colicky upper abdominal pain lasting 3 months. Magnetic resonance imaging of the abdominal cavity revealed a tumor in the porta hepatis. The patient was qualified for laparoscopy. The tumor was totally excised laparoscopically under guidance of laparoscopic ultrasound without intra- or postoperative complications. Postoperative histopathological examination confirmed the porta hepatic schwannoma. The patient recovered uneventfully with very good cosmetic results. In the follow-up period of 5 months we have not observed any abdominal or general health problems. The present case is the first report in the world of laparoscopic ultrasound guided laparoscopic excision of a porta hepatic schwannoma.

Schwannoma in the hepatoduodenal ligament with portal vein invasion

“…[ 8 ] Immunohistochemically, schwannomas are usually positive for S-100 protein and negative for desmin, smooth muscle actin (SMA), CD34, and CD117. [ 21 ] In our case, immunohistochemistry showed strong positivity for S-100 protein, which supported the benign nature of the tumor.…”

Innovations in dedicated PET instrumentation: from the operating room to specimen imaging

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