Sof tissue tumor

Articles

• kaposiform hemangioendothelioma
  27 April 2004

  Definition : Kaposiform hemangioendothelioma is a rare tumor of childhood often associated with Kasabach-Merritt phenomenon (50%) and occasionally lymphangiomatosis.
  Images
  kaposiform hemangioendothelioma
  https://twitter.com/GeronimoJrLapac/status/631614884321624064
  A vascular tumor of kaposiform hemangioendothelioma / tufted angioma spectrum in an infant. Note the characteristic podoplanin / D2-40 stain
  https://twitter.com/ikletskaya/status/822082053814493184
  Hybrid cystic (...)

• myxofibrosarcoma
  11 October 2005

  Definition: Myxofibrosarcoma (MFS) is one of the most common soft tissue sarcomas of elderly patients and has a predilection for the limbs.
  Myxofibrosarcoma is the most common sarcoma of elderly patients is treated by complete surgical excision with negative margins.
  Frequently elderly, extremities & superficial; progression from low-to-higher grade.
  Images
  FNA of Myxofibrosarcoma (MFS)
  https://twitter.com/RoseannIWu/status/748958396292927490
  Myxofibrosarcoma (MFS) : (...)

• Ewing sarcoma
  21 May 2004

  Ewing tumor, Ewing tumour
  Images
  Ewing’s sarcoma https://twitter.com/MArnold_PedPath/status/740720267647942656 https://twitter.com/histiocytosisX/status/779419664120152064 https://twitter.com/histiocytosisX/status/880130635909799936
  Digital cases (Digital slides)
  HPC:31 : Ewing sarcoma
  HPC:132 : Ewing sarcoma
  HPC:182 : Ewing sarcoma
  HPC:376 : EWSR1-FLI1+ bone-forming Ewing sarcoma (EWSR1-FLI1+ small cell osteosarcoma)
  Variants
  epithelioid Ewing sarcoma
  spindle cell Ewing (...)

• juxta-articular myxoma
  27 April 2009

  Definition : Juxta-articular myxoma is essentially morphologically identical to cellular myxoma but involves subsynovial tissue, usually of larger joints, and may quite often recur locally.
  See also
  juxta-articular anomalies
  myxoma / myxomas
  myxoid tumors
  myxoid background
  References
  The evolving classification of soft tissue tumours: an update based on the new WHO classification. Fletcher CD. Histopathology. 2006 Jan;48(1):3-12. PMID: (...)

• sclerosing epithelioid fibrosarcoma
  27 April 2009

  Digital slides
  Case 38 : Sclerosing epithelioid fibrosarcoma
  Definition: Sclerosing epithelioid fibrosarcoma is a rare variant of fibrosarcoma. It is a mesenchymal neoplasm composed of round to oval cells dispersed in a nestlike or cordlike distribution on a highly collagenous tissue background and is now recognized as a distinct clinical entity.
  Sclerosing epithelioid fibrosarcoma is a rare and poorly recognized but distinct variant of fibrosarcoma (ICD-O code 88 10/3).
  Clinical (...)

• myxoinflammatory fibroblastic sarcoma
  14 July 2004

  acral myxoinflammatory fibroblastic sarcoma, inflammatory myxohyaline tumour; MIFS
  Definition: Acral myxoinflammatory fibroblastic sarcoma is a rare tumor of the distal extremities. It is a rare, low-grade sarcoma characterized by distinctive, large, and bizarre Reed—Sternberg—like cells associated with an intense inflammatory infiltrate. The biology of MIFS is still poorly understood.
  Images
  myxoinflammatory fibroblastic sarcoma
  https://twitter.com/ARP_Press/status/847207432711540736 (...)

• aggressive angiomyxoma
  7 February 2006

  AAMs, ’aggressive’ angiomyxoma; deep aggressive angiomyxoma
  Definition: Aggressive angiomyxoma (AA) is a distinctive, locally aggressive, fibromyxoid tumor of the pelvic and genital soft tissues.
  Digital case
  JRC:1443 : Aggresive angiomyxoma of pelvic soft tissues.
  JRC:14570 : Aggresive angiomyxoma of peritoneum (ischiorectal fossa).
  Images
  Deep (agressive) angiomyxoma. Young women vulvar tumor
  https://twitter.com/luishcruzc/status/758685476341415936 (...)

• nuchal-type fibroma
  23 November 2004

  nuchal fibroma
  Nuchal-type fibroma (NTF ) is a paucicellular, CD34+ fibrous tumor with fat entrapment, which may occur in both nuchal and extranuchal locations and in association with Gardner syndrome.
  Nuchal-type fibroma most often occurs in the posterior neck or upper trunk of younger adult males.
  It may be associated with diabetes mellitus
  It is characterized by a poorly marginated proliferation of hypocellular collagenous tissue showing entrapment of mature adipose tissue and (...)

• desmoplastic fibroblastoma
  11 October 2005

  collagenous fibroma

• malignant mesenchymoma
  27 April 2009

  Malignant mesenchymoma has now virtually fallen into disuse, since the majority of sarcomas showing two or more lines of differentiation would nowadays be recognized, in most cases, as examples of tumours such as dedifferentiated liposarcoma or malignant peripheral nerve sheath tumour with heterologous elements.
  There do exist exceedingly rare sarcomas showing two lines of differentiation which would not fit into the above categories, but these do not seem to form a clearly definable or (...)

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