Differential diagnosis included gastrointestinal smooth muscle tumor, leiomyosarcoma, fibrosarcoma
, and malignant peripheral nerve sheath tumor.
Among malignant neoplasms, squamous cell carcinomas, extragenital transmissible veneral tumors, lymphomas and fibrosarcoma
were common and in benign tumors, papilloma, trichoblastoma, mast cell tumor, plasma cell tumor and fibroma were common.
primarily occur in the soft tissues, but intraosseous lesions have also been reported.
The young age of the macaw was unusual compared with the pattern in dogs; however, fibrosarcomas
were described in budgerigars as young as 1 year of age, (12) in a 1-year-old canary (Serinus canaria), (6) a 6-week-old chicken, (4) and a 5-year-old blue-and-gold macaw.
Posteriormente se describio un fibrosarcoma
en Gadus morhua (36) y carcinomas embrionarios en Esox lucius (12).
Radiologically, the differential diagnosis includes neurogenic tumors, minor salivary gland tumors, dermoid or epidermoid tumors, hemangiomas, sarcoidosis, aggressive fibromatosis, dermatofibromas, fibrosarcomas
, and malignant histiocytomas.
5,16) Despite the controversy over the terminology, definition and criteria used for the diagnosis of IMFT and inflammatory fibrosarcoma
, (6,16) there is growing consensus that they are an interrelated myofibroblastic continuum, typified by a spectrum of histomorphological features and potentially aggressive behaviour and shared clinicopathological features.
with multifocal osseous metaplasia at the site of equine influenza vaccination.
Bilateral subcutaneous fibrosarcomas
in a cat following feline parvo-, herpes--and calicivirus vaccination.
Long-term survival was registered in these PDT-treated groups only in animals with CR of G:5:1:13 fibrosarcomas
He added that pathologists "need to be sharp on this [diagnosis]," noting that in the past, many have overdiagnosed these as fibrosarcomas
Be aware that fibrosarcomas
and angiosarcomas are more common--not just in a Stewart Treves [syndrome] kind of picture, where you have chronic edema and then develop an angiosarcoma.