Angiomyxoma is a myxoid tumor involving the blood vessels. It can affect the vulva and other parts of the pelvis. The characteristic feature of this tumor is its frequent local recurrence and it is currently regarded as a non-metastasizing benign tumor. Genetics
HMGA2 rearrangement
by translocation t(12;21)(q15;q21.1)
by translocation t(11;12)(q23;q15)
by translocation t(8;12)(p12;q15)
t(5;8)(p15;q22)

Pathology
Microscopy
Vascular appearance of tumor
Hypocellular mesenchymal lesion
Spindled and stellate cells with an ill-defined cytoplasm
Cells loosely scattered in a myxoid stroma
No evidence of nuclear atypia and mitosis
Numerous, thin-to-thick wall vessels of different sizes
Myxoid, hypocellular background
Bland cytological appearance of spindle cells

Microscopical views
Immunochemistry
Immunohistochemical studies show strong staining for desmin, estrogen receptors, and progesterone receptors. Staining for actin, CD34 and smooth muscle actin are  intermediate. Staining for S-100 protein is negative. Diagnosis
Differential diagnosis
Myxoid tumors
Angiomyofibroblastoma

Treatment
Prognosis
Although it is a benign tumour and does not invade neighbouring tissues, it has a tendency to recur after surgical excision so it is termed  "aggressive". Recurrence can occur as early as six months from initial resection. Patients frequently present at tertiary medical centers with a history of labial mass (sometimes misdiagnosed as Gartners cyst), with multiple surgical excisions from several surgeons. There is no standard medical therapy; agents reported to be effective in case reports include systemic hormonal therapy with SERMs such as tamoxifen or LHRH agonists (leuprolide), and cytotoxic ("traditional") chemotherapy, as well as radiation therapy especially for recurrent disease. History
Aggressive angiomyxoma was originally described in 1983, but the term "angiomyxoma" dates back to at least 1952. See also
Myxoma
Cutaneous myxoma (Superficial angiomyxoma)

References


== External links ==
jejuni can also cause a latent autoimmune effect on the nerves of the legs, which is usually seen several weeks after a surgical procedure of the abdomen. The effect is known as an acute idiopathic demyelinating polyneuropathy (AIDP), i.e. Guillain–Barré syndrome, in which one sees symptoms of ascending paralysis, dysaesthesias usually below the waist, and, in the later stages, respiratory failure.Some strains of C jejuni produce a cholera-like enterotoxin, which is important in watery diarrhea observed in infections. The organism produces diffuse, bloody, edematous, and exudative enteritis. In a small number of cases, the infection may be associated with hemolytic uremic syndrome and thrombotic thrombocytopenic purpura through a poorly understood mechanism. Transmission
The common routes of transmission for the disease-causing bacteria are fecal-oral, person-to-person sexual contact, ingestion of contaminated food (generally unpasteurized (raw) milk and undercooked or poorly handled poultry), and waterborne (i.e., through contaminated drinking water). Contact with contaminated poultry, livestock, or household pets, especially puppies, can also cause disease.Animals farmed for meat are the main source of campylobacteriosis. A study published in PLoS Genetics (26 September 2008) by researchers from Lancashire, England, and Chicago, Illinois, found that 97 percent of campylobacteriosis cases sampled in Lancashire were caused by bacteria typically found in chicken and livestock. In 57 percent of cases, the bacteria could be traced to chicken, and in 35 percent to cattle. Wild animal and environmental sources were accountable for just three percent of disease.The infectious dose is 1000–10,000 bacteria (although ten to five hundred bacteria can be enough to infect humans).