Rebecca Richardson1, Cara E Morin2, Charles A Wheeler3, Yian Guo4, Yimei Li4, Sima Jeha5, Hiroto Inaba6, Ching-Hon Pui6, Seth E Karol6, M Beth McCarville2. 1. Department of Radiology, Johns Hopkins School of Medicine, Baltimore, Maryland. 2. Department of Diagnostic Imaging, St Jude Children's Research Hospital, Memphis, Tennessee. 3. Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee. 4. Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee. 5. Department of Global Pediatric Medicine, St Jude Children's Research Hospital, Memphis, Tennessee. 6. Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee.
Abstract
PURPOSE: Acute pancreatitis (AP) due to chemotherapy-induced pancreatic injury is a common side effect of treatment for acute lymphoblastic leukemia (ALL), the most common childhood malignancy. The American College of Radiology recommends ultrasound (US) for initial imaging of AP in all populations to assess for ductal obstruction. However, US may be insensitive to diagnose and assess chemotherapy-associated AP. METHODS AND MATERIALS: The institutional review board approved this retrospective study. Patients with ALL and AP were identified from protocol databases, using Common Terminology Criteria for Adverse Events (CTCAE) version 3. Chemotherapy dosing, amylase/lipase levels, clinical symptoms, and US/computed tomography (CT) reports within 10 days of diagnosis were recorded. All CT images were reviewed for revised Atlanta classification and CT severity index (CTSI). RESULTS: Sixty-nine patients, aged 2-21 years, experienced 88 episodes of AP, undergoing 98 US and 44 CT. Seventy-two events (82%) occurred within 30 days of asparaginase administration. Sixty-nine episodes (78%) were initially diagnosed by the presence of abdominal pain and pancreatic enzyme elevation. Overall sensitivities for AP detection were 47% using US and 98% for CT. US sensitivity was greatest in CTCAE grade 4 (86%) and necrotizing pancreatitis (67%). CONCLUSIONS: Most cases of AP in children with ALL can be diagnosed with clinical history and labs. US has limited sensitivity in detecting pancreatitis in this population. Imaging to diagnose AP in this patient population could be limited to clinically equivocal cases.
PURPOSE: Acute pancreatitis (AP) due to chemotherapy-induced pancreatic injury is a common side effect of treatment for acute lymphoblastic leukemia (ALL), the most common childhood malignancy. The American College of Radiology recommends ultrasound (US) for initial imaging of AP in all populations to assess for ductal obstruction. However, US may be insensitive to diagnose and assess chemotherapy-associated AP. METHODS AND MATERIALS: The institutional review board approved this retrospective study. Patients with ALL and AP were identified from protocol databases, using Common Terminology Criteria for Adverse Events (CTCAE) version 3. Chemotherapy dosing, amylase/lipase levels, clinical symptoms, and US/computed tomography (CT) reports within 10 days of diagnosis were recorded. All CT images were reviewed for revised Atlanta classification and CT severity index (CTSI). RESULTS: Sixty-nine patients, aged 2-21 years, experienced 88 episodes of AP, undergoing 98 US and 44 CT. Seventy-two events (82%) occurred within 30 days of asparaginase administration. Sixty-nine episodes (78%) were initially diagnosed by the presence of abdominal pain and pancreatic enzyme elevation. Overall sensitivities for AP detection were 47% using US and 98% for CT. US sensitivity was greatest in CTCAE grade 4 (86%) and necrotizing pancreatitis (67%). CONCLUSIONS: Most cases of AP in children with ALL can be diagnosed with clinical history and labs. US has limited sensitivity in detecting pancreatitis in this population. Imaging to diagnose AP in this patient population could be limited to clinically equivocal cases.
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