Popliteal artery entrapment syndrome treated by a posterior approach in a 15-year-old athlete.

Popliteal artery entrapment syndrome is a rare source of claudication in young people. We present the case of a 15-year-old male athlete who presented with intermittent numbness of his right foot with exertion. Imaging revealed classic compression from a right type III popliteal artery entrapment. The left popliteal artery was chronically occluded with a large collateral vessel. He underwent release of the accessory bands of the gastrocnemius muscle with significant arteriolysis on the right side via a posterior approach. Chronic popliteal artery entrapment can be treated from a posterior approach, resulting in arterial occlusion and will be asymptomatic if well collateralized.

Spontaneous Enterocutaneous Fistula.

Spontaneous scrotal enterocutaneous fistulas (ECFs) are rare and more common in countries with poor access to medical care. Our patients represent the first two reported adult cases of scrotal ECFs in the United States. Both patients were 83-year-old males who presented from assisted living facilities with past medical histories of prostate cancer. The first patient had an ECF from his cecum to right scrotum and the second patient had an ECF from his sigmoid colon to left scrotum. These are the first recorded cases describing spontaneous scrotal ECFs in adults in the United States. They are also the seventh and eighth reported cases worldwide. Both patients had delayed presentations of their incarcerated hernias because their scrotal ECFs decompressed their incarcerated bowels and attenuated the development of obstructive symptoms. Each patient underwent a successful orchiectomy by urology and bowel resection with ligation of their scrotal ECFs, and herniorrhaphy by general surgery.

Effects of storage duration and volume on the quality of leukoreduced apheresis-derived platelets: implications for pediatric transfusion medicine.

BACKGROUND: Platelet (PLT) storage adversely affects PLT structure and function in vitro and is associated with decreased PLT recovery and function in vivo. In pediatric transfusion medicine, it is not uncommon for small residual volumes to remain in parent units after aliquot preparation of leukoreduced apheresis-derived PLTs (LR-ADP). However, limited data exist regarding the impact of storage on residual small-volume LR-ADP. STUDY DESIGN AND METHODS: Standard metabolic testing was performed on residual volumes of LR-ADP after aliquot removal and PLT aggregometry using a dual agonist of ADP and collagen was performed on stored, small-volume aliquots (10-80mL) created from an in vitro model of PLT storage. RESULTS: Seventy-seven LR-ADP underwent metabolic (n=67) or metabolic and aggregation (n=10) studies. All products maintained a pH value of more than 6.89 throughout storage. Lactate and pCO(2) increased proportionally with longer storage time. Regardless of acceptable metabolism during storage, aggregation in 10- to 20-mL aliquots was impaired by Day 4 and aliquots less than 40 mL demonstrated the most dramatic decrease in aggregation from baseline. CONCLUSIONS: Despite maintenance of acceptable metabolic conditions, residual volumes of LR-ADP develop impaired aggregation in vitro that may adversely affect PLT survival and function in vivo. At volumes below 40mL, LR-ADP revealed reduced aggregation. As a result, it is recommended to monitor and record volumes of LR-ADP used for pediatric transfusion. Moreover, once LR-ADP attain a volume of 50mL or less on Day 4 or Day 5 of storage, consider discarding these products until their in vivo efficacy can be studied.