Dermatology Book

http://www.fpnotebook.com/

DermatofibromaAka: Solitary histiocytoma, Sclerosing Hemangioma, Nodulus Cutaneous, Fitzpatrick's Sign

Advertisement

  1. Causes
    1. Idiopathic benign skin tumor
    2. Fibrous reaction to local irritation
      1. Local trauma
      2. Insect Bite
      3. Viral infection
      4. Folliculitis
    3. Underlying condition (>15 dermatofibromas)
      1. Immunocompromised patient
      2. Autoimmune condition
  2. Signs
    1. Characteristics
      1. Small firm Papule, Plaque or Nodule (<1cm)
      2. Completely symmetric and regular
      3. Tan or light brown surface (may be red or yellow)
        1. Color gradually fades into normal skin color
      4. Fitzpatrick's Sign
        1. Skin dimples downward with lateral compression
    2. Distribution
      1. Most common: Anterior thighs and Legs
      2. Moderately common: Arms and Trunk
      3. Uncommon: Head, Palms, and Soles
  3. Differential Diagnosis
    1. Primary Malignant Melanoma
    2. Scar
    3. Blue Nevus
    4. Pilar Cyst
    5. Metastatic Carcinoma
    6. Kaposi's Sarcoma
  4. Management
    1. Excision Indications
      1. Repeated trauma
      2. Unacceptable cosmetic appearance
      3. Uncertain diagnosis
    2. Techniques
      1. Eliptical excision or Punch Biopsy
        1. Risk of scarring
      2. Other methods (incomplete removal)
        1. Shave Biopsy
        2. Cryotherapy
  5. References
    1. Fitzpatrick (1999) Color Atlas Dermatology

Cutaneous Fibrous Histiocytoma (C0002991)

Definition (NCI)A solitary, slowly growing nodular mass, most often affecting the extremities. It is composed of fibrous and histiocytic cells which infiltrate the dermis and occasionally the underlying subcutaneous tissue. Usually local excision is curative. Recurrences are reported only in a small minority of cases.
Definition (MSH)A slowly growing benign skin nodule consisting of poorly demarcated cellular fibrous tissue enclosing collapsed CAPILLARIES with scattered HEMOSIDERIN-pigmented and lipid MACROPHAGES. They are common, usually about 1 cm in diameter and occur in the DERMIS. (From Stedman, 25th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1356)
ConceptsNeoplastic Process (T191)
MSHD018219
EnglishBenign Cutaneous Fibrous Histiocytoma, Benign Fibrous Cutaneous Histiocytoma, Benign fibrous histiocytoma of skin, Benign Fibrous Histiocytoma of the Skin, Benign Skin Fibrous Histiocytoma, Cutaneous Fibrous Histiocytoma, Cutaneous histiocytoma, Cutaneous Histiocytomas, Dermatofibroma, Dermatofibroma lenticulare, Dermatofibromas, Fibrous histiocytoma of skin, Fibrous Histiocytoma of the Skin, Fibrous xanthoma of skin, Pleomorphic fibroma, Sclerosing Angioma, Sclerosing angioma of skin, Sclerosing Angiomas, Sclerosing Hemangioma, Sclerosing Hemangiomas
Spanishangioma esclerosante, angioma esclerosante de la piel, dermatofibroma, dermatofibroma lenticular, histiocitoma cutaneo, histiocitoma fibroso cutaneo, xantoma fibroso cutaneo
Parent ConceptsHistiocytoma, Benign Fibrous (C0206644), Benign fibrohistiocytic neoplasm of skin (C1274305), Common Connective and Soft Tissue Neoplasm (C1333129), Neoplasms, Fibrous Tissue (C0206643), Cutaneous Fibrous Histiocytoma (C0002991), Duplicate concept (C1274013), Benign fibrohistiocytic neoplasm - category (C1302871), Benign neoplasm of skin (C0004998)
SourcesCOSTAR, CSP, MSH, MTH, NCI, NDFRT, SCTSPA, SNOMEDCT
Derived from the NIH UMLS (Unified Medical Language System)



Navigation Tree