Abstract. Gliomatosis peritonei (GP) is characterized by the presence of benign, mature neuroglial implants throughout the peritoneum and is typically accompanied by mature or immature ovarian teratomas. GP is a condition that has only been described relatively recently, with ~100 cases reported in the English literature. The majority of reported cases have focused on the pathology and clinical treatment of the disease; radiological findings are distinct, but the discussion of this is scarce in the literature. The current study presents two cases of GP with bilateral ovarian teratomas and provides a review of the relevant literature, with particular emphasis on the radiological differential diagnosis. The present study reinforces previously reported observations from imaging analysis and suggests that radiological investigation alone cannot sufficiently aid the differentiation of benign glial deposits from diffuse peritoneal malignant seeding. However, radiologists should be familiar with this rare condition in order to provide an accurate diagnosis, particularly in ovarian tumor staging, which may markedly impact the administered treatment. It is recommended that doctors undertake long-term follow-ups in patients presenting with GP due to the potential for malignant transformation.
IntroductionGliomatosis peritonei (GP) is a rare condition that is typically associated with immature and, less commonly, mature teratomas and ventriculoperitoneal shunting. GP occurs commonly in young girls and, in rare cases, can be found in males. GP is characterized as a myriad of peritoneal nodular or miliary implants composed of benign, mature glia (1). As GP has an extremely low incidence rate, there is no widely accepted guidance as to the method by which these patients should be treated. Approximately 100 cases of GP have been described in the literature. Since the disease was first described by Neuhaüser in 1906 (2), it has been well-documented that GP, when benign, does not adversely affect patient prognosis. Glial implants associated with the disease may remain stable for long periods of time, or may completely disappear. The repeated measurement of tumor markers and imaging are usually undertaken throughout follow-up. To the best of our knowledge, only a few cases have been reported that describe the findings of a radiological analysis (3-5). The current study presents two cases of GP with bilateral ovarian teratomas, describing the diagnosis, associated radiological observations and complete clinical course of each patient.
Case reportCase 1. A 19-year-old woman was referred to The Second Affiliated Hospital, Zhejiang University School of Medicine (Hangzhou, China) on January 16, 2011, presenting with a 15-day history of lower abdominal distension. During a physical examination of the pelvis and abdomen, a large firm mass was identified and was palpable extending up to 20 cm to the xiphoid process. Analysis of serum tumor markers demonstrated an increase in carcinoembryonic antigen (13.4 ng/ml; normal range, <5 ng/ml), ...