title: Primary subcutaneous hydatid cyst with palisading granulomatous reaction.
abstract: Palisading granulomatous reactions are prominent microscopic characteristics that are seen in many diseases. Isolated subcutaneous cystic echinococcosis is rarely documented. Palisading granuloma as a host immune reaction to Echinococcus granulosus in an isolated primary subcutaneous hydatid cyst has been reported only once before. In this report, we are describing a 53-year-old male who developed a slowly growing subcutaneous thigh mass. Light microscopy confirmed the presence of hydatid cyst. Further radiological workup for liver and lung has not shown any visceral hydatid focus.
authors.affiliation: Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City, P.O. Box 22490, Riyadh 11426, Saudi Arabia.
authors.forename: Noorah
authors.initials: N
authors.lastname: Almadani
authors.affiliation: Department of Medical Imaging, King Abdulaziz Medical City, P.O. Box 22490, Riyadh 11426, Saudi Arabia.
authors.forename: Bader
authors.initials: B
authors.lastname: Almutairi
authors.affiliation: Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City, P.O. Box 22490, Riyadh 11426, Saudi Arabia.
authors.forename: Ali H
authors.initials: AH
authors.lastname: Alassiri