Hydatid cyst of the pancreas: Report of an undiagnosed case of pancreatic hydatid cyst and brief literature review

Figure 1 Magnetic resonance cholangiopancreatography shows a hydropic gall bladder and dilated intrahepatic bile ducts and common bile duct. The distal portion of the common bile duct is narrowed due to external compression. A: A pancreatic cyst compressing the lower tip of the common bile duct is also seen in this section; B: A coronal T2-weighed MR cross-section shows a pancreatic cyst and a dilated common bile duct; C: Intravenous T1-weighed axial cross-section with contrast enhancement shows a pancreatic cyst; D: An axial computerized tomography cross-section with contrast enhancement shows a pancreatic cyst with a thick wall and without central contrast uptake. MR: Magnetic resonance.

Figure 2 Patient’s mass has characteristics consistent with a hydatid cyst. The cyst wall is surrounded by fibrous capsule (also called the pericyst layer). The adjacent parenchyma demonstrates pressure atrophy (hematoxylin-Eosin stain ×100).

Figure 3 Cyst wall of the patient’s mass consists of a laminated faintly stained chitinous membrane (outer layer). Multiple protoscolices are present within the daughter cyst (inner germinal layer, hematoxylin-Eosin stain × 100).