Which specialist should be consulted for a patient with abdominal pain and a computed tomography abdomen/pelvis showing a 4.4 cm epigastric subcutaneous collection likely abscess, with a percutaneous drain inadvertently placed into the gallbladder lumen and providing poor drainage?

Immediate Multidisciplinary Consultation Required: Interventional Radiology, Surgery, and Advanced Gastroenterology

This patient requires urgent consultation with interventional radiology (IR) first to address the misplaced drain, followed by general surgery and potentially advanced therapeutic gastroenterology for definitive management. The inadvertent placement of a percutaneous drain into the gallbladder lumen represents a serious procedural complication that demands immediate multidisciplinary intervention 1.

Primary Consultation: Interventional Radiology

Contact IR immediately to assess and manage the misplaced drain. The drain terminating in the gallbladder lumen rather than the intended epigastric subcutaneous collection is a critical error that requires expert evaluation 2. IR should:

• Evaluate whether the drain can be safely repositioned or requires removal
• Assess if a new drain can be placed into the actual 4.4 cm epigastric collection using CT or ultrasound guidance 3
• Determine if the gallbladder itself requires drainage given the drain's current position

The reported "poor drainage" likely reflects that the drain is decompressing the gallbladder rather than the intended abscess, leaving the actual pathologic collection untreated 4.

Secondary Consultation: General Surgery

Surgical consultation is essential because this scenario may represent:

• A cholecystocutaneous fistula or communication between the gallbladder and abdominal wall abscess 4
• Iatrogenic gallbladder injury requiring cholecystectomy
• An abscess that may ultimately require operative management if percutaneous drainage fails

The 2023 AGA guidelines emphasize that multidisciplinary collaboration between interventional radiology and surgery is paramount in managing complex gallbladder-related pathology 1.

Tertiary Consultation: Advanced Therapeutic Gastroenterology

If the patient is a high-risk surgical candidate or if there is concern for acute cholecystitis, consider consulting a gastroenterologist with expertise in endoscopic ultrasound-guided gallbladder drainage (EUS-GBD). The 2023 AGA guidelines state that EUS-GBD is a feasible and efficacious alternative to percutaneous drainage with high technical success rates (98%) and low adverse event rates 1. However, this should only be performed by those expert in advanced therapeutic endoscopic ultrasound 1.

Critical Clinical Considerations

Immediate Priorities:

• Source control is inadequate with the current drain configuration—the epigastric abscess remains undrained
• Risk of ongoing sepsis from the untreated collection
• Potential for bile peritonitis if the gallbladder drain is removed without proper management
• Need to determine if the abscess communicates with the gallbladder (suggesting cholecystocutaneous fistula) 4

Common Pitfall to Avoid:

Do not simply remove the misplaced drain without IR guidance and a plan for draining the actual abscess. The case report literature documents that cholecystocutaneous fistulas can form after percutaneous drain placement, and premature drain removal without addressing the underlying pathology can lead to recurrent abscess formation 4.

Diagnostic Imaging Considerations:

The 2024 IDSA guidelines recommend CT as the initial imaging modality for adults with suspected intra-abdominal abscess due to its superior diagnostic accuracy and ability to maintain accuracy in the presence of drains and dressings 5. Repeat CT imaging may be warranted to:

• Better delineate the relationship between the gallbladder and the epigastric collection
• Assess for fistulous communication
• Plan optimal drainage approach

Management Algorithm

1. Immediate IR consultation → Assess drain position and plan repositioning or new drain placement
2. Concurrent surgical consultation → Evaluate need for cholecystectomy and operative management
3. If high surgical risk → Consider advanced GI consultation for EUS-GBD as alternative 1
4. Definitive treatment → Likely requires cholecystectomy after source control achieved, as seen in similar case reports 4

The evidence strongly supports that percutaneous drainage has morbidity rates of 50-75% with recurrent complications 1, making definitive surgical management often necessary after initial stabilization.