Type IV Ehlers-Danlos Syndrome: A Surgical Emergency? A Case of Massive Retroperitoneal Hemorrhage.

Retroperitoneal hemorrhagic bleeding is a known manifestation of Type-IV Ehlers-Danlos Syndrome that is caused by loss-of-function mutations of the pro-alpha-1 chains of type III pro-collagen (COL3A1) resulting in vascular fragility. A number of previous reports describe futile surgical intervention for retroperitoneal bleeding in Type-IV Ehlers-Danlos Syndrome with high post-operative mortality, although the rarity of retroperitoneal bleeding associated with Type-IV Ehlers-Danlos Syndrome precludes an evidence-based approach to clinical management. We report a 23-year-old male with history of Type-IV Ehlers-Danlos Syndrome who presented with severe abdominal pain and tachycardia following an episode of vomiting. Further work-up of his abdominal pain revealed massive retroperitoneal bleeding by CT-scan of the abdomen. Given numerous cases of catastrophic injury caused by surgical intervention in Type-IV Ehlers-Danlos Syndrome, the patient was treated non-operatively, and the patient made a full recovery. This case suggests that even in cases of large retroperitoneal hemorrhages associated with Ehlers-Danlos Syndrome, it may not truly represent a surgical emergency.

INTRODUCTION

Retroperitoneal hemorrhagic bleeding is a known manifestation of Type-IV Ehlers-Danlos Syndrome that is caused by loss-of-function mutations of the pro-alpha-1 chains of type III pro-collagen (COL3A1) resulting in vascular fragility and the hemorrhage of medium sized blood vessels. Due to the vascular frailty associated with Type IV Ehlers-Danlos Syndrome, surgical intervention carries a high risk and is associated with significant morbidity and mortality. Previously, a manuscript was published in the Postgraduate Medical Journal by Soonawalla et al. (2002) entitled “Type IV Ehlers-Danlos Syndrome: A surgical Emergency” [1]. describing a 35-year-old male with Type-IV (vascular subtype) Ehlers-Danlos Syndrome, who developed a retroperitoneal hemorrhage secondary to vomiting. The patient was taken emergently to the operating room because of tachycardia and evidence of massive retroperitoneal bleeding as visualized by an abdominal CT-scan. Adequate hemostasis was achieved intra-operatively, but the patient developed a sigmoid perforation post-operatively. A repeat exploratory laparotomy to repair the sigmoid colon was performed, but the patient unfortunately died of a myocardial infarction following the second operation. The case reported by Soonawalla et al. was similar to other cases in the literature describing catastrophic results of surgical intervention in patients with Type-IV Ehlers-Danlos Syndrome resulting in high post-operative mortality [2, 3]. In response to the manuscript by Soonawalla et al. [1] we report a very similar case of Type-IV Ehlers-Danlos associated with retroperitoneal bleeding that we successfully managed non-operatively.

CASE REPORT

A 23-year-old male with history of Type-IV Ehlers-Danlos Syndrome and hemorrhagic stroke presented with severe abdominal pain following an episode of vomiting that was precipitated by alcohol consumption. Like the case reported by Soonawalla et al. [1] the patient was tachycardic on initial presentation suggesting hypovolemia, and an abdominal CT-scan revealed a large retroperitoneal hemorrhage (Fig. ). Angiographic evaluation using interventional radiology was considered for evaluation of this patient’s hemorrhage, but was decided against due to the high risk of dissection from arterial catheters in Type IV Ehlers-Danlos Syndrome. Furthermore, based upon the catastrophic consequences of exploratory laparotomy in the case reported by Soonawalla et al. [1] we elected for a trial of conservative management. The patient’s initial Hgb was 15.9 that fell to 11.8 on his first hospital day, and then stabilized. For the first 48 hours, the patient was placed on strict bed-rest to prevent any further exacerbation of the hemorrhage, and administered anti-emetics liberally to prevent any further episodes of emesis. Throughout the rest of his hospital stay, the patient’s pain improved, Hgb remained stable, and he was discharged on his fourth hospital day. Currently, the patient continues to do well nearly one year later and has returned to his usual state of health. To our knowledge, this is the first patient with Type IV Ehlers-Danlos Syndrome to survive the development of a massive retroperitoneal hemorrhage.

DISCUSSION

Type-IV Ehlers-Danlos Syndrome is a rare connective tissue disorder caused by loss-of-function mutations of the gene COL3A1 that encodes the pro-α-1 chains of type-3 pro-collagen that causes vascular fragility especially of medium-sized blood vessels, and retroperitoneal bleeding is a known complication of this syndrome [4]. While the rarity of this syndrome precludes an evidence-based approach to management, previous cases can serve as a guide in the clinical care of patients with Type-IV Ehlers-Danlos Syndrome [1, 5]. We submit this case as a response to Soonawalla et al. [1] as our case suggests that in such patients, a trial of conservative management instead of emergent surgical intervention may represent a reasonable clinical approach on an ad hoc basis. The operative and post-operative mortality rate for surgical intervention is high in Type-IV Ehlers-Danlos Syndrome, [6-8] and invasive interventions should be considered as a last resort.