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Radiation recall gastritis secondary to combination of gemcitabine and erlotinib in pancreatic cancer and response to PPI - a case report
© The Author(s). 2016
Received: 22 January 2016
Accepted: 25 July 2016
Published: 2 August 2016
Radiation recall gastritis is rare but can be induced after concurrent chemoradiation for pancreatic cancer. We report a patient with pancreatic cancer who developed radiation-recall gastritis related to a combination of gemcitabine and erlotinib.
A 54-year-old female with unresectable pancreatic cancer received gemcitabine in combination with radiation therapy followed by chemotherapy with gemcitabine and erlotinib. After completing 2 cycles of chemotherapy, the patient had epigastric pain, nausea, and vomiting. Abdominal computed tomography (CT) scan revealed diffuse wall thickening of the stomach, and esophagogastroduodenoscopy (EGD) showed multiple gastric ulcers. The patient was treated with proton pump inhibitors (PPI) and was continued on maintenance chemotherapy. Two months later, the patient presented with the similar symptoms and persistent gastric ulcers were observed during subsequent EGD. Nevertheless, the patient’s symptom had resolved with PPI therapy. Thus, the patient underwent maintenance chemotherapy with gemcitabine and erlotinib for additional 4 cycles. Eventually, follow-up abdominal CT Scan and EGD at 6 months demonstrated resolution of the gastric ulcers.
Physicians should be aware of the possibility of radiation recall gastritis associated with a combination of gemcitabine and erlotinib. Administration of PPIs may mitigate the adverse effects of gemcitabine and erlotinib in the presence of radiation recall gastritis; however further studies are warranted.
Radiation recall is known as chemotherapy-triggered inflammatory reaction in previously exposed areas to irradiation but the mechanism is poorly understood . Radiation recall gastritis can be occurred in pancreatic cancer . Radiation recall gastritis due to combination of gemcitabine and erlotinib has not been reported in the literature. There are only two case reports, one is gemcitabine-related and the other is erlotinib-associated radiation recall gastritis [2, 3].
We experienced a case of pancreatic cancer with radiation recall gastritis after combination therapy of gemcitabine and erlotinib, but exhibited gradual improvement along with proper maintenance the combination chemotherapy and PPI (proton pump inhibitor).
A 54-year-old woman with no medical history presented with a complaint of periumbilical pain and weight loss. Physical examination indicated tenderness in the epigastrium. Her initial blood tests showed hemoglobin level, 13.4 g/dL; white blood cell count, 5600/μL; platelet count, 281000/μL; and levels of amylase, 48 U/L; lipase, 61 U/L; CA 19-9, 605 U/mL; and CEA, 1.2 ng/mL.
Abdominal computed tomography (CT) and magnetic resonance imaging revealed a 3.5 cm, pancreatic mass abutting the celiac axis, splenic vein, and superior mesenteric artery. There was also hypermetabolic left inguinal lymphadenopathy. She was diagnosed with stage T4N1M0.
Radiation recall phenomenon is now a well-recognized phenomenon since radiation recall dermatitis was reported in 1975 . Radiation recall dermatitis has been reported most frequently with a frequency of 8.8 % and characterized by an inflammatory reaction within a previously irradiated skin after administration of antineoplatic drugs .
Antineoplastic drugs have mainly been involved in radiation recall reactions. Most common anticancer agents that cause radiation recall reactions are the anthracycline doxorubicin, the taxanes docetaxel and paclitaxel, and the antimetabolites gemcitabine and capecitabine .
Although there are several pathophysiological theories concerning radiation recall, the most accepted hypothesis is the drug hypersensitivity reaction. In this hypothesis, radiation lowers the inflammatory response threshold and induces the expression of certain cytokines, and then the drug triggers a non-immune inflammatory reaction .
Gemcitabine induced radiation recall was reported in the skin, central nervous system, musculoskeletal systems and gastrointestinal tract. The time between initiation of radiation and recall of the radiation phenomenon ranged from 3 weeks to 8 months from the initiation of gemcitabine .
Dermatitis and pneumonitis were reported as the radiation recall reactions associated with erlotinib . Recently there was a report of gastrointestinal bleeding secondary to radiation recall gastritis related to erlotinib . The mechanism of erlotinib-induced radiation recall gastritis is also unclear, but Graziani et al.  suggested the association between the pathogenesis of radiation recall and erlotinib’s up-regulation of the angiogenic growth factor thymidine phosphorylase. Erlotinib, as an orally administered epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, can cause gastrointestinal ulcer without relation with radiation because EGFR is highly expressed in the epithelium of the gastrointestinal tract. However, this case showed ulcers and prominent wall thickening only in gastric antrum and body, confined to previously irradiated area. To our knowledge, this report is the first case of radiation recall gastritis due to combination of gemcitabine and erlotinib. It could be assumed that the combination therapy could result in a higher radiation recall incidence.
Radiation recall reactions have been reported in the literature, but management remains controversial whether or not to continue the drug, especially chemotherapeutic agent. Suggested management of the recall reaction is discontinuing drug and initiating steroid therapy, supportive therapy, and/or nonsteroidal anti-inflammatory agents . There were two reports treated with discontinuing drug in radiation gastritis associated with gemcitabine and erlotinib [2, 3]. Meanwhile there is a partial support for the continuation of chemotherapy even when a recall reaction is encountered . In this case, diffuse gastritis and ulcers were treated with PPI and the patient eventually recovered from the radiation recall gastritis without discontinuation of chemotherapy. It can be assumed that recovery was partly due to reduced absorption of erlotinib because absorption of erlotinib is known to be pH dependent. However Ter Heine et al.  reported that trough concentrations of erlotinib were not diminished when PPI was administered orally. More studies are needed on the role of PPI in radiation gastritis.
This is the first case report of radiation recall gastritis due to combination of gemcitabine and erlotinib. It could be followed with proton pump inhibitor during chemotherapy without withdrawal.
CA, carbohydrate antigen; CEA, carcinoembryonic antigen; CT, computed tomography; EGD, esophagogastroduodenoscopy; EGFR, epidermal growth factor receptor; ER, emergency room; PPI, proton pump inhibitor
The authors do not have any acknowledgements.
The study was not funded.
Availability of data and materials
The figures of this article are included within the article.
HJK and Y-TB were involved with concept and design of this manuscript. SJC, and JSK (Jun Suk Kim) were involved with acquisition of subjects and data. SJC, JSK (Jae Seon Kim) and HJK were involved with writing and revision of manuscript. All authors have read and approved the manuscript.
The authors declare that they have no competing interests.
Consent for publication
Written informed consent was obtained from the patient for publication of this case report and any accompanying images.
Ethics approval and consent to participate
This study was approved by the Institutional Review Board of Korea University Guro (KUGH 15135). Patient agreed to participate and provided written consent.
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