Retroperitoneal Bronchogenic Cyst Mimicking a Pancreatic Cystic Lesion with Extremely High Level of Intralesional Fluid CA-19.9 Antigen: Benign in Disguise

Bronchogenic cysts are congenital benign tumors resulting from abnormal budding of the primitive foregut. Usually presented on the posterior mediastinum, its presence on the retroperitoneum is extremely rare. We present an asymptomatic lady patient with a retroperitoneal cystic lesion that was submi...

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Bibliographic Details
Published inIndian journal of surgery Vol. 84; no. Suppl 2; pp. 556 - 561
Main Authors Clementino-Filho, Jessé, Surjan, Rodrigo Cañada Trofo, Taglieri, Eloy, Ardengh, José Celso
Format Journal Article
LanguageEnglish
Published New Delhi Springer India 01.08.2022
Springer
Springer Nature B.V
Subjects
Analysis
Antigens
Cardiac Surgery
Case Report
Gastric cancer
Medicine
Medicine & Public Health
Neurosurgery
Pediatric Surgery
Plastic Surgery
Surgery
Thoracic Surgery
Retroperitoneal neoplasms
CA-19–9 antigen
Endosonography
Bronchogenic cyst
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Summary:Bronchogenic cysts are congenital benign tumors resulting from abnormal budding of the primitive foregut. Usually presented on the posterior mediastinum, its presence on the retroperitoneum is extremely rare. We present an asymptomatic lady patient with a retroperitoneal cystic lesion that was submitted to endoscopic ultrasound–guided biopsies and intracystic fluid aspiration with histology excluding malignance despite intracystic fluid biochemical analysis that disclosed extremely high carbohydrate antigen 19–9. Definite diagnosis of bronchogenic cyst was only possible after complete surgical resection of the lesion. Furthermore, we discuss the use of this antigen as a tumor marker in this situation and its relevance to the preoperative diagnosis of such lesions.
ISSN:0972-2068
0973-9793
DOI:10.1007/s12262-021-03137-x