Endometrial expression of estrogen and progesterone receptors in non-cyclic mares treated only with long-acting progesterone.

Administration of progesterone (P4) after estradiol is usually performed to prepare non-cyclic mares as embryo recipients. However, there are successful pregnancy reports after embryo transfer in non-cyclic mares treated only with progestins. The objective of this study was to evaluate endometrial gene expression and immunostaining for estrogen receptor alpha (ERα), beta (ERβ) and progesterone receptor (PR) in seasonal anestrous mares treated with long acting P4 (LA P4).

Polypectomies: colonic endoscopic resections.

The authors present their experience with 924 colonoscopic polypectomies in 549 patients. Postpolypectomy bleeding was 0.36% without perforations.

Genetics and colorectal cancer (HNPCC) in adolescence. A case report.

The authors report a case of non-polyposis colon cancer in a seventeen year old female without prior polyposis or family history. Since it was the first case in this family, HNPCC was suspected. The polymerase chain reaction (PCR) of the tumor revealed changes in four polymorphic regions.

[Penetrating trauma of the neck: prospective study of 53 cases].

The treatment of penetrating injuries of the neck is still controversial nowadays, especially when there is doubt concerning the existence of any anatomic structure lesion. The delay to indicate surgical cervical exploration may predispose the patient to have serious sequels when the esophagus or the trachea are injured. The infection which may occur in this eventuality progresses rapidly to the mediastinum, determining the patient's death.

Experimental injury to the spleen study of interaction: contamination/preservation.

Ablation of the spleen leads to a significant risk of postsplenectomy invasive sepsis. This concept has become very important in the last three decades because of awareness of the spleen's important role in immunological functions. Hence, this has led many research centers to study hemostasis of the injured spleen in order to preserve its function.