Agressive inflammatory myofibroblastic tumor of the liver with underlying schistosomiasis: a case report.
World J Gastroenterol
; 16(33): 4233-6, 2010 Sep 07.
Article
in En
| MEDLINE
| ID: mdl-20806444
ABSTRACT
Inflammatory myofibroblastic tumor (IMT) occurs infrequently in the liver. It is controversial whether it represents a low grade mesenchymal neoplasm or a reactive inflammatory lesion. Local recurrence and metastasis are rare and some tumors are associated with infectious agents. We report on a case of a large and partially resected IMT with local recurrence and diaphragm and kidney infiltration detected on routine surveillance two years later. Histologically, the tumor showed spindle cells without atypia, mitosis or necrotic areas in a myxoid and collagenized background with inflammatory cells. In the liver portal tracts, granulomatous lesions with viable eggs of Schistosoma mansoni were identified. Immunohistochemistry demonstrated spindle cells which were smooth-muscle actin and vimentin positive. In conclusion, this case points out that these histological patterns do not predict the aggressive biological behavior of the lesion. A reason for the recurrence and the infiltration may be incomplete tumor resection. Further investigation is necessary in order to better clarify an infectious cause in some IMTs.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Schistosomiasis
/
Liver Neoplasms
/
Neoplasms, Muscle Tissue
Type of study:
Diagnostic_studies
/
Prognostic_studies
Limits:
Adult
/
Animals
/
Female
/
Humans
Language:
En
Journal:
World J Gastroenterol
Journal subject:
GASTROENTEROLOGIA
Year:
2010
Document type:
Article
Affiliation country:
Brazil