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- Pathology Outlines - Fibroma
19 year old woman with large ovarian fibroma presenting with spontaneous abdominal bleeding (Case Rep Obstet Gynecol 2019;2019:9834915) 34 year old woman with mitotically active cellular fibroma that recurred 16 years later (Int J Gynecol Pathol 2020 [Epub ahead of print])
- Pathology Outlines - Odontogenic fibroma
Central odontogenic fibroma Ameloblastic fibroma Composed of odontogenic epithelial component strands, cords and islands that may exhibit peripheral palisading, reverse polarization and stellate reticulum Primitive appearing stroma that is delicate and lobular in appearance Desmoplastic fibroma
- Pathology Outlines - Desmoplastic fibroblastoma
Answer D is incorrect because USP6 gene rearrangement is associated with fibroma of tendon sheath Answer C is incorrect because t(17;22) is associated with dermatofibrosarcoma protuberans Answer B is incorrect because t(7;16)(q32-34;p11) FUS::CREB3L2 fusion is associated with low grade fibromyxoid sarcoma Comment Here Reference: Collagenous
- Pathology Outlines - Peripheral ossifying fibroma
Other terms include peripheral cementifying fibroma, peripheral cemento-ossifying fibroma, ossifying fibrous epulis, calcifying fibrous epulis (J Indian Soc Periodontol 2014;18:527) Should not be confused with odontogenic central bone tumors, such as ossifying fibroma and cemento-ossifying fibroma
- Pathology Outlines - Gardner fibroma
Gardner fibroma is associated with concurrent or subsequent development of desmoid fibromatosis in ~20% of cases Answers A, C and D are incorrect because patients with Gardner fibroma do not have an increased risk of developing dermatofibrosarcoma protuberans, juvenile xanthogranuloma or malignant peripheral neural sheath tumor Comment Here
- Pathology Outlines - Renomedullary interstitial cell tumor
Kidney tumor - Renomedullary interstitial cell tumor: benign kidney tumor; asymptomatic, commonly found incidentally
- Pathology Outlines - Fibromatosis-palmar plantar
Calcifying aponeurotic fibroma: Plump or epithelioid fibroblasts palisading around cartilage and spotty calcification Desmoid type fibromatosis: Rare in feet Infiltrates skeletal muscle > 3 cm Often beta catenin+ Spindle cell sarcomas (i e , synovial sarcoma, malignant peripheral nerve sheath tumor, etc ):
- Pathology Outlines - Juvenile trabecular ossifying fibroma and . . .
Juvenile ossifying fibroma (JOF) is a rare variant of ossifying fibroma (OF), a benign fibro-osseous lesion It has aggressive behavior It has two histologic subtypes: Juvenile psammomatoid ossifying fibroma Juvenile trabecular ossifying fibroma
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