title: A large vascular leiomyoma or an infected sebaceous cyst of the chest? A case report.
abstract: BACKGROUND
  Vascular leiomyoma is a rare tumour of smooth muscle origin. It has been reported in many anatomical sites, but it usually affects limbs. It's recurrence rate is slow but it's quite difficult to make diagnosis.
  
  
  METHODS
  The study describes the case of a 53-year-old man, with a subcutaneous, large vascular leiomyoma of the right clavicular region. The patient had a painful, slow-growing mass, measuring more than 20 mm. The mass had a relatively homogeneous, hypoechoic-echo texture, with a small amount of posterior acoustic enhancement. No diagnosis was made and the patient underwent surgery for a suspected leyomioma. After surgery a hard, round-shaped tumor, measuring approximately 43 x 32 mm of diameter was found with histological features of leyomioma.
  
  
  CONCLUSIONS
  The case has an unusual clinical presentation, for the uncommon localization and size of the mass. US imaging and histopathologic features are reported. The rarity of vascular leiomyoma makes diagnosis difficult and frequently delayed. Differential diagnosis includes infected sebaceous cysts, glomus tumors, hemangiomas, angiolipomas, ganglions, and traumatic neuromas.
  
  
  CONCLUSIONS
  This report highlights that leiomyoma, even of large dimension, must be included in the differential diagnosis of painful, subcutaneous masses.
authors: Department of Unit of Plastic Surgery, Policlinico Umberto I, University La Sapienza, Rome, Italy. emanuelecigna@msn.com
authors: Emanuele
authors: E
authors: Cigna
authors: Michele
authors: M
authors: Maruccia
authors: Antonietta
authors: A
authors: Troccola
authors: Pasquale
authors: P
authors: Fino
authors: Valentina
authors: V
authors: Sorvillo
authors: Nicolò
authors: N
authors: Scuderi
mesh_terms: D018229:Angiomyoma / Q000473:pathology*; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013896:Thoracic Diseases / Q000473:pathology*; D013899:Thoracic Neoplasms / Q000473:pathology*