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Beumer M, Hölzen P, Vogels J, Hennig-Pauka I, Grosse Beilage E, Kammeyer P, Kleinschmidt S, Hewicker-Trautwein M. Congenital Myofibroblastic Skin Tumours in a Newborn Piglet Resembling the Multicentric Form of Infantile Myofibromatosis. J Comp Pathol 2021; 186:13-17. [PMID: 34340799 DOI: 10.1016/j.jcpa.2021.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/01/2021] [Accepted: 04/28/2021] [Indexed: 11/17/2022]
Abstract
A 2-day-old female piglet was submitted with multiple congenital, nodular skin masses located on the head, neck, trunk and legs. Histopathological examination revealed the presence of nodular, cutaneous tumours with a biphasic growth pattern and comprising a population of undifferentiated, oval or slightly polygonal, frequently perivascularly located cells and a population of spindle-shaped, fibroblast-like cells arranged in bundles. Multifocally, tumour cells infiltrated subcutaneous adipose and muscular tissue. Immunohistochemically, the undifferentiated tumour cells expressed vimentin and calponin, whereas the spindle-shaped tumour cells were positive for vimentin, α-smooth muscle actin and calponin. Based on these findings, the diagnosis was myofibroblastic tumours closely resembling the multicentric form of human infantile myofibromatosis.
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Affiliation(s)
- Marius Beumer
- Field Station for Epidemiology, Bakum, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Peter Hölzen
- Field Station for Epidemiology, Bakum, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Johanna Vogels
- Field Station for Epidemiology, Bakum, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Isabel Hennig-Pauka
- Field Station for Epidemiology, Bakum, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Elisabeth Grosse Beilage
- Field Station for Epidemiology, Bakum, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Patricia Kammeyer
- Lower Saxony State Office for Consumer Protection and Food Safety, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Sven Kleinschmidt
- Lower Saxony State Office for Consumer Protection and Food Safety, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
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