IJGII Inernational Journal of Gastrointestinal Intervention

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Case Report

Int J Gastrointest Interv 2021; 10(2): 81-83

Published online April 30, 2021 https://doi.org/10.18528/ijgii200040

Copyright © International Journal of Gastrointestinal Intervention.

Ampulla of Vater metastasis from squamous cell carcinoma of the esophagus

Jun Hyuk Son1 , Jung Su Lee1 , Jong Wook Kim1 , Nam-Hoon Kim1 , Han-Seong Kim2 , and Yoon Suk Lee1,*

1Division of Gastroenterology and Hepatology, Department of Internal Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
2Department of Pathology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea

Correspondence to:*Division of Gastroenterology and Hepatology, Department of Internal Medicine, Ilsan Paik Hospital, Inje University College of Medicine, 170 Juhwaro, Ilsanseo-gu, Goyang 10380, Korea.
E-mail address: lys0326@paik.ac.kr (Y.S. Lee).

Received: August 28, 2020; Revised: October 9, 2020; Accepted: October 9, 2020

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Esophageal cancer is one of the lethal malignant tumors because it is often diagnosed in the advanced stage with lymph node or distant metastasis. The recurrence rate of esophageal cancer is known to be about 40% to 50% even in the patients who underwent curative esophageal resection. Most frequent sites of metastases are known to be the liver. Furthermore, other distant metastases also could be developed in lung, bone, brain, kidney, adrenal, abdominal cavity, and skin. However, ampulla of Vater (AoV) metastasis rarely occurs from esophageal cancer. Therefore, we report herein a case of AoV metastasis from squamous cell carcinoma of the esophagus.

Keywords: Ampulla of Vater, Esophageal neoplasms, Liver function tests, Neoplasm metastasis

Esophageal cancer is a lethal malignant tumor because most patients are diagnosed at a late stage with distant lymph nodes or organ metastases.1 The prognosis of esophageal cancer is very poor and the five-year survival rate is about 20% according to the Surveillance, Epidemiology, and End Results (SEER) database of the National Cancer Institute, in the United States. Surgical resection remains the primary and the most important treatment modality for esophageal cancer as it provides the best chance of cure.2 However, it has been reported that about 45% to 50% of patients develop recurrences within 2 years even after radical surgery and the prognosis is very poor once the recurrence occurs.2,3 The recurrence may be local or it may be in distant organs. Usual sites of distant metastases are lung, liver, bones, adrenal glands and brain. Distant metastasis of esophageal cancer to ampulla of Vater (AoV) is very rare and only one case has been reported according to the literature review.4 Herein we report a case of ampullary metastasis in a patient with a locally advanced esophageal cancer who had undergone radial esophagectomy after neoadjuvant concurrent chemoradiotherapy.

A 48-year-old male was referred to gastroenterology department due to abnormal result of liver function tests. This patient had been diagnosed with locally advanced esophageal squamous cell carcinoma 10 months ago (Fig. 1). He received radical esophagectomy and regional lymph nodes dissection after neoadjuvant concurrent chemoradiotherapy and the pathologic stage turned out to be T1bN3M0. During the follow-up after the surgery, cervical lymph node enlargement was identified and biopsy was taken. Excisional biopsy revealed that it was metastatic lymph nodes from the esophageal squamous cell carcinoma. Therefore, the patient had been treated with palliative chemotherapy for 3 months.

Figure 1. (A) Upper endoscopy showed depressed mucosal lesion on middle esophagus. (B) Moderately differentiated squamous cell carcinoma is found in the esophageal biopsy (H&E, ×100).

The patient complained of abdominal discomfort and loss of appetite. He did not complain of fever and chills. On physical examination, the abdomen was soft with mild epigastric tenderness, however rebound tenderness was not present. His vital sign was stable. The results of laboratory tests were as follows: white blood cell count 5,290/mm3 (range, 4.0–10.0/mm3); hemoglobin 11.7 g/dL (range, 13.0–17.0 g/dL); platelet count 272,000/mm3 (range, 150,000–400,000/mm3); total bilirubin 0.68 mg/dL (range, 0–1.20 mg/dL); direct bilirubin 0.57 mg/dL (range, 0–0.30 mg/dL); alkaline phosphatase 1,042 U/L (range, 35–105 U/L); gamma glutamyltransferase 2,106 U/L (range, 6–42 U/L); aspartate aminotransferase 219 U/L (range, 0–40 U/L); alanine aminotransferase 254 U/L (range, 0–40 U/L).

Abdominal computed tomography (CT) scan and magnetic resonance cholangiopancreatography (MRCP) showed mild extrahepatic bile duct and main pancreatic duct dilatation, however no demonstrable lesion that could cause biliary and pancreatic duct obstruction was observed (Fig. 2). Therefore, endoscopic retrograde cholangiopancreatography (ERCP) was performed for making differential diagnosis. During ERCP, irregular shaped mass with mucosal nodularity on AoV was noticed (Fig. 3). Multiple biopsies were taken from the mass and endoscopic retrograde biliary drainage with 7 Fr plastic stent was conducted. Endoscopic biopsy revealed squamous cell nests and immunohistochemical staining of the cell-block material showed strong positivity for p63 (Fig. 4). Therefore, AoV metastasis as a manifestation of distant metastasis could be diagnosed in the patient with esophageal squamous cell carcinoma.

Figure 2. Abdominal computed tomography (A) and magnetic resonance cholangiopancreatography (B) showed mild extrahepatic bile duct and main pancreatic duct dilatation without demonstrable obstructive lesion.

Figure 3. (A) Irregular shaped mass was noticed on ampulla of Vater. (B) Endoscopic retrograde biliary drainage with 7 Fr plastic stent was conducted.

Figure 4. Metastatic squamous cell nests are found in the ampulla of Vater biopsy. Invasive tumor cells are noted in the lymphatics of mucosa (H&E, ×100).

Metastatic tumor of AoV is very rare. According to the Sarocchi et al’s case report and literature review,5 only 32 cases were reported until 2018. Renal cell carcinoma (34%) was the most common corresponding primary tumor, followed by malignant melanoma (31%) and breast cancer (13%). Other less common locations were uterine cervix, esophagus, ovary, femur, bladder, and larynx.5-7 Metastatic tumor of AoV from esophageal cancer is very rare and only one case has been reported.4

The presenting symptoms of metastatic tumor of AoV are similar to those of primary ampullary tumors. Jaundice, pruritus, or alterations in stool and urine can occur as a result of biliary obstruction. Abdominal discomfort and upper gastrointestinal bleeding also can occur. Endoscopic finding is important for the diagnosis of metastatic tumor of AoV, however it is usually indistinguishable from that of primary ampullary tumors. The typical endoscopic finding of ampullary tumor is discolored lobular/pine cone-like tumor.8 Tumors are generally soft and friable with irregular margin and can be ulcerated so that can cause easy bleeding.5

For the evaluation of metastatic tumors of AoV, imaging studies such as CT and magnetic resonance imaging are required to presume the primary origin of tumor. Biopsies and pathologic examination including immunohistochemistry are also required for the definitive diagnosis. The prognosis of patients with metastatic tumor of AoV is known to be very poor because it is a manifestation of distant metastasis from the primary site of cancer. Therefore, AoV metastasis is usually treated with palliative chemotherapy combined with endoscopic drainage for obstructive jaundice. However, surgical treatment such as Whipple resection could be considered when it occurs in patients with renal cell carcinoma, because time interval until the development of metastatic tumor is quite long and metastasis is usually confined to a single site.9,10

Renal cell carcinoma, breast cancer and malignant melanoma account for the most cases of metastatic tumor of AoV. However, ampullary metastases can occur in other various malignant tumors including esophageal cancer as seen in our case. Therefore, ampullary metastasis should be considered as one of the differential diagnosis for unexplained abnormality of liver function test in cancer patients even including esophageal squamous cell carcinoma.

No potential conflict of interest relevant to this article was reported.

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