Orthopedics Book

Benign

  • Intramuscular Myxoma

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Intramuscular Myxoma

Aka: Intramuscular Myxoma, Myxoma
  1. See Also
    1. Soft Tissue Mass
  2. Definitions
    1. Myxoma
      1. Benign, lobulated tumor of connective tissue
      2. Composed of spindle and stellate cells within a mucoid matrix (myxoid stroma)
    2. Intramuscular Myxoma
      1. Myxomas involving large Muscles of thigh, buttocks, Shoulder, or upper arm
  3. Epidemiology
    1. Intramuscular Myxoma are rare (account for only 0.12% of soft tissue tumors)
    2. Intramuscular Myxoma peak Incidence is in age 40 to 70 years old
  4. Signs
    1. Intramuscular Myxoma is a palpable mass within the large Muscles of thigh, buttocks, Shoulder, or upper arm
      1. Most common in the hip
  5. Imaging
    1. MRI
      1. Intramuscular Myxoma is T1 hypointense to Muscle, and T2 high signal intensity
  6. Management
    1. Surgical excision of Intramuscular Myxomas
  7. References
    1. Achar (2022) Am Fam Physician 105(6): 602-12 [PubMed]

Myxoma (C0027149)

Definition (NCI) A benign soft tissue neoplasm characterized by the presence of spindle and stellate cells, lobulated growth pattern, and myxoid stroma formation.
Definition (NCI) A benign soft tissue neoplasm characterized by the presence of neoplastic spindle and stellate cells in a myxoid stroma.
Definition (NCI_CDISC) A benign soft tissue neoplasm with a myxoid stroma formation.
Definition (MSH) A benign neoplasm derived from connective tissue, consisting chiefly of polyhedral and stellate cells that are loosely embedded in a soft mucoid matrix, thereby resembling primitive mesenchymal tissue. It occurs frequently intramuscularly where it may be mistaken for a sarcoma. It appears also in the jaws and the skin. (From Stedman, 25th ed)
Concepts Neoplastic Process (T191)
MSH D009232
ICD10 M8841/1, M8840/0
SnomedCT 39143003, 57723004, 404082003, 404083008
English Myxoma, Myxomas, Angiomyxoma, Angiomyxomas, Myxoma NOS, [M]Angiomyxoma, [M]Myxoma NOS, Myxoma [Disease/Finding], myxoma, myxomas, angiomyxoma, neoplasm of uncertain behavior angiomyxoma, Angiomyxoma (diagnosis), MYXOMA, BENIGN, Myxoma (disorder), Myxoma (morphologic abnormality), Angiomyxoma (disorder), Angiomyxoma (morphologic abnormality), Myxoma, NOS
Swedish Myxom
Czech myxom, angiomyxom
Finnish Myksooma
Russian MIKSOMA, МИКСОМА
Spanish (M)angiomixoma, angiomixoma (anomalía morfológica), angiomixoma (trastorno), angiomixoma, mixoma (anomalía morfológica), mixoma (trastorno), mixoma, SAI, mixoma, Angiomixoma, Mixoma
Italian Angiomixoma, Mixoma
Croatian ANGIOMIKSOM, MIKSOM
Polish Śluzak
Japanese 血管粘液腫, 粘液腫, 粘液芽細胞腫, 粘液細胞腫, 粘液腫-血管
Norwegian Myksom, Angiomyksom
French Myxome, Angiomyxome
German Angiomyxom, Myxom
Dutch Angiomyxoom, Myxoom
Portuguese Angiomixoma, Mixoma
Sources
Derived from the NIH UMLS (Unified Medical Language System)


Intramuscular Myxoma (C1334260)

Definition (NCI) A myxoma arising from muscle tissues.
Concepts Neoplastic Process (T191)
English Intramuscular Myxoma
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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