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Biomedical subjects

V N Ortiz

Publications and source records attributed to V N Ortiz.

At least 19 recordsLinked to original sources
PubMed1989

Surgical significance of persistent cholecystohepatic ducts.

Anatomical variations of the biliary tract occur frequently enough so as to worry the general surgeon dealing with this problem. Generally speaking, these anatomical variations are not identified prior to surgery. Anomalous drainage of the common hepatic duct into the gall bladder was identified while performing a cholecystectomy. The common bile duct proximal to the cystic duct was atretic. The problem described above was successfully managed by hepatico-jejunostomy.

Adolescent↗
PubMed1978

The value of radionuclide scanning in early diagnosis of intestinal infarction.

Small focal areas of intestinal infarction were produced experimentally in mice by two techniques: (1) intussusception and (2) suture strangulation of a loop of jejunum. The radionuclide technetium 99m diphosphonate (99mTc-diphosphonate) was subsequently administered intravenously, and abdominal scans were obtained. The scans demonstrated focal infarcted lesions accurately, and every positive scan was associated with an area of infarction, as demonstrated by pathologic examination. However, negative scans did not definitely exclude an area of infarction: in the intussusception study there were five false negative scans in 25 animals, and in the loop ligation study there were two false negative scans in 28 animals. The technique may have clinical application in such intestinal diseases as necrotizing enterocolitis in infancy in which early diagnosis of small areas of necrosis is currently difficult by clinical and radiologic methods.

Animals↗
PubMed1978

Reimplantation of the ampulla of Vater after total pancreatectomy for nesidioblastosis.

Total pancreatectomy is often required to control hypoglycemic seizures in infants with nesidioblastosis. If duodenal devascularization results, reconstruction is difficult because standard biliary-intestinal anastomoses may reflux, or, in infants, become strictured. Therefore, surgeons are loath to perform such procedures. To avoid these complications, the common bile duct and the ampulla of Vater were implanted into the reconstructed duodenum.

Adenoma, Islet Cell↗
PubMed1977

Vascular compression of the duodenum.

A successfully treated case of vascular compression of the duodenum is presented. The associated factors that might have been involved in predisposing this patient to the development of an acute intermittent, yet worsening clinical picture, are discussed, as well as the possible precipitating factor. Diagnosis and management of this disease entity are discussed.

Adult↗
PubMedDate not supplied

Total colectomy and "J" pouch ileo-anal pull through without temporary diverting ileostomy in the management of ulcerative colitis.

Anal sphincter saving operations are currently the procedures of choice for most patients with ulcerative colitis. In this study we review the experience of The Mayagüez Medical Center, Department of Surgery with 18 patients who underwent a total abdominal colectomy, rectal mucosectomy and "J" pouch ileoanal pull through without a temporary diverting ileostomy in the management of ulcerative colitis. The complications that are associated with this procedure in our patients are: wound infection, postoperative leak, early stricture and intestinal obstruction. Only one patient died and it was due to a massive pulmonary embolism. Finally, we conclude that this procedure should be reserved for well nourished, psycho-logically stable young patients who are willing to tolerate the complications associated with it.

Adolescent↗
PubMedDate not supplied

Transduodenal sphincteroplasty--how we do it.

Transduodenal Sphincteroplasty can be performed in a simple reproducible and low morbidity fashion. The surgical technique used by the Department of Surgery of the Mayagüez Medical Center is presented.

Cholecystectomy↗
PubMedDate not supplied

Rectosigmoid lipoma an unusual colonic lipoma. Case report and review of the literature.

This is a case report of a male patient admitted with a huge rectosigmoid mass that had eroded into the lumen, causing persistent rectal bleeding. Special procedures such as double contrast Barium Enema, abdomino-pelvic CT-Scan and proctosigmoidoscopy addressed us to identify it as an intramural lipoma. Rectosigmoid lipoma with its differential diagnosis and surgical approach is reviewed together with the most pertinent literature.

Diagnosis, Differential↗
PubMedDate not supplied

Anorectal sigmoid myotomy with ileal anastomosis after subtotal colectomy due to Hirschsprung's enterocolitis: case report and review of the literature.

We presented a one year old seven months old patients that had undergone a double barreled proximal ileostomy-sigmoidostomy after resection of most of the ileum, ascending, transverse and descending colon due to Hirschsprung's enterocolitis; that was admitted for anorectal-sigmoid myotomy and ileosigmoidostomy. The advantages of Kasai's procedure (anorectal myotomy with coloanal anastomosis) over the pull-through procedures to treat Hirschsprung's disease are discussed along with the more pertinent literature.

Anal Canal↗
PubMedDate not supplied

Squamous cell carcinoma of the prostate: case report and review of literature.

Carcinoma of the prostate, that is adenocarcinoma, is one of the most common malignancies in the male with an estimated incidence for 1991 of 122,000 new cases. On the other hand, squamous cell carcinoma of the prostate, with a median incidence of .5%-1% of all prostatic malignancies, has a similar clinical presentation but differs in treatment response and prognosis. We herein present one case of this histological pattern and review the literature pertaining to it.

Aged↗
PubMedDate not supplied

Acute appendicitis: as a predisposing factor for acute glomerulonephritis--report of two cases.

This is a review of two children who developed acute glomerulonephritis (AGN) following acute gangrenous appendicitis (AGA) with periappendicular collections. The first patient presented with AGN during the course of appendicitis. The second patient developed AGN after appendectomy. Both patients did not have any other predisposing factors. AGN resolved in both patients after massive intravenous antibiotics. This is the first report of acute appendicitis as a predisposing factor for AGN.

Acute Disease↗
PubMedDate not supplied

Unusual case of Meckel's diverticulum: a case report and review of an atypical form of presentation.

This is a review of a child who developed symptomatic anemia secondary to a huge Meckel's Diverticulum (MD). The patient presented with multiple complications, such as: neoplasia, occult chronic bleeding, giant size MD, partial intestinal obstruction and severe symptomatic anemia. There was complete resolution of the condition after resection and ileo-ileal anastomosis. After revision of the literature, this case is the first report of MD occurring concomitantly with such a myriad of signs and symptoms.

Adolescent↗
PubMedDate not supplied

Gastroschisis: a ten year review.

From 1983 to 1993, 30 cases of gastroschisis were managed at the Mayaguez Medical Center. Ninety percent of these patients underwent primary closure of their abdominal wall defect. Three of 30 patients (10%) required silastic or goretex silos with final closure in an average of 8 days. There was no sex predilection, the average birth weight was 2.4 kg and the mean gestational age was 36 weeks. Thirty percent had associated anomalies, the majority were intestinal atresia, and/or undescended testicles. Twenty one (70%) of infants were delivered vaginally. Nine children (30%) were delivered via cesarean section. Four cesarean sections were done solely after prenatal ultrasonic identification of gastroschisis. There was no improvement in hospital stay, complications, or days until enteral feeds were tolerated when vaginally delivered patients were compared to those born by c-sections. In seven patients mesh sheeting (Marlex) was used for closure of late hernia defects. The mean hospital stay was 50 days and the mean time to enteral feedings 20 days. All patients required postoperative mechanical ventilation for an average of 4 days. There was no mortality. Our data and review of the literature do not support gastroschisis prenatal diagnosis as a sole indication for cesarean section. Our data showed favorable prognosis for most babies. Primary fascial closure can be accomplished safely in the majority of patients. No single operative strategy is ideal for all patients, and treatment of individual defects should be tailored to the degree of visceroabdominal disproportion.

Abnormalities, Multiple↗
PubMedDate not supplied

Primitive peripheral neuroectodermal tumors Mayagüez Medical Center experience.

Primitive neuroectodermal or neuroepithelial tumors are names used to describe neoplasias composed of undifferentiated cells resembling germinal cells of the embryonic neural tube. These tumors are small round cell malignancies of the neural crest origin arising outside the central and sympathetic nervous system. They are described as peripheral and central neuroectodermal tumors related to the original malignant cell. A great number of tumors are described under this classification in spite of the fact that there is no an universal acceptance that these small-cell neoplasms, regardless of their primary site, are derived from immature neuroectoderm tissue. Because one tumor resembles others in terms of its phenotypic expression, multiple specific studies such as clinical profile, ultrastructural, immunocytochemical, and cytogenetic features should be studied, since no single clinical or laboratory marker is by itself diagnostic. However, there is a chromosomal reciprocal translocation, t(11;22)(q24;q12), which is unique to Primitive Neuroectodermal Tumor (PNET).

Adolescent↗