PubMed · 2006428
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D A Driscoll. 1991. Fetal limbs: normal and abnormal.. https://doi.org/10.1016/0037-198x(91)90036-n
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The aetiology of non-iatrogenic causes of peripheral ischaemia and gangrene presenting either at birth or within a few hours of delivery is unknown in the majority of 56 confirmed cases. In this review of 47 cases occurring since 1941 the aetiology was clear in only 6, four due to compression by the encircling umbilical cord. There was no clear association with gestational age, birth weight, maternal age or type of delivery. Seven were infants of poorly controlled diabetic mothers and these may constitute a subgroup due to altered haemostatic mechanisms. Pregnancy hypertension was an association in 7 cases, oligohydramnios in 6. There is only limited support for birth trauma, sepsis, and thrombo-emboli from the ductus arteriosus as causes. There is indirect evidence that thrombo-emboli can migrate from the placental bed to the fetus. In recent years death from this condition has been rare with surgical thrombectomy increasingly successful in late presenting cases. When gangrene is established at birth surgical amputation, autoamputation, or some loss of function is usual. Peripheral ischaemic insults presenting at birth may be part of a wider spectrum of disorders, both prenatal and perinatal, attributable to occlusive vascular disruption.
The treatment of extremity soft-tissue sarcoma has evolved considerably over the years. Previously, the preferred treatment was radical resection or amputation. Recently, radiation therapy combined with conservative resection has been shown to provide adequate tumor control while preserving a functional limb. Often, a large volume of tissue is irradiated in a manner that requires the patient to be in a reproducible position. Minimizing patient movement is imperative to ensure that the prescribed dose is delivered to the designated target volume. At our institution, Alpha Cradles have been routinely used for eight years to aid in positioning extremity sarcoma patients. The positioning of the patient for tumors at different locations in the extremity and the Alpha Cradle fabrication is described. The positioning device is comfortable for the patient and the accuracy is verified by comparison of simulation films with weekly port films.
Authors emphasize the primary role of surgery in the treatment of soft tissue sarcoma, confirming the recent acquisition that conservative surgery and adjuvant therapy yield results comparable to those of more extensive surgery. Subsequently, the authors delineate the general guidelines in the surgical treatment of soft tissue sarcoma, depending on the anatomic location of the tumor, and point out the main goals: first to provide local control of the tumor, and second to preserve as much function as possible without jeopardizing the adequacy of the procedure.