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F C Rodrigues

Publications and source records attributed to F C Rodrigues.

5 recordsLinked to original sources
PubMed1998

Gastric inflammatory myofibroblastic proliferation in children.

Gastric inflammatory myofibroblastic proliferation (IMP) is an extremely rare entity in children, which to our knowledge has only been mentioned in case reports. We describe the ninth pediatric case and review the literature concerning the etiology, clinical and laboratory features, pathology, treatment, and outcome. There has been a predominance in preschool females. Abdominal pain, upper gastrointestinal hemorrhage, and an abdominal mass, either isolated or associated, have been the main clinical features. Iron-deficiency anemia has been a constant finding. Lesions are elevated and involve the full thickness of the gastric wall, usually with ulceration of the luminal surface; extragastric extension suggesting malignancy is frequent. Diagnosis is made by histology after surgical excision. There was no mortality directly related to gastric IMP, and only one case recurred after surgical excision. The pathogenesis is controversial, but the finding of Helicobacter pylori in our case may indicate an inflammatory origin. Awareness of this benign lesion and its mimicry of malignancy is important so that inappropriately aggressive therapy can be avoided.

Cell Division↗
PubMed1981

Photographic defocusing: a means to render recognizable line traced models of negatively stained biological specimens.

A simple method of obtaining analogue images from traced models of biological specimens is presented. It consists of the photographic defocusing of traced models and it is illustrated with negatively stained cylindrical forms of the ASFV; the black lines of the trace in the model correspond to the negative stain surrounding the viral morphological subunits as seen in the electron micrograph. The photographic defocusing is the means by which the traced model is filtered and is used to introduce grey levels on an otherwise black and white image. The right amount of defocusing is attained when the width of the trace of the model equals the width of the rim of the negative stain appearing between the morphological subunits in the electron micrograph.

African Swine Fever Virus↗
PubMedDate not supplied

Finsterer-Bancroft operation: an option for the treatment of difficult duodenal ulcers.

BACKGROUND: In the surgical management of duodenal ulcers, the most feared complications are related to the treatment of the duodenal stump after Billroth lI-type gastric resections. Such complications are more evident in so-called 'difficult duodenum' cases, whose identification is directly related to the surgeon's experience. Among available techniques to avoid those complications, one is the treatment of the antralduodenal stump by the method of pre-pyloric exclusion and removal of antral mucosa, as proposed by Finsterer in 1918 and diffused by Bancroft in 1932. This method, however, was criticized, especially because of the possibility of retaining residual antral mucosa, which would be a determinant factor for the ulcer disease recurrence. The objective of the study was to verify whether the Finsterer-Bancroft operation is a valid alternative in the treatment of unresectable duodenal ulcers, as well as to encourage its application by less experienced surgeons, by the standardization of the surgical technique. METHODS: From April, 1984 to December, 1996 two hundred and six elective partial gastrectomies for duodenal ulcers were performed with Billroth II reconstruction. Of these, in thirty-one (15%), the Finsterer-Bancroft method was used. The patients' ages, varied between 23 and 65 years, constituting 25 males and 6 females. In all cases, surgery was indicated due to the presence of stenosis. RESULTS: Three patients (9.7%) had complications. There was one death (3.2%) due to leakage of duodenal stump and peritonitis, one case of duodenal fistula (3.2%), and one case of ulcer recurrence (3.2%). All three complications were caused by inappropriate application of the method. CONCLUSIONS: We conclude that the Finsterer-Bancroft operation is a valid alternative in the surgical treatment of chronic duodenal ulcers, when considered unresectable, and is within the reach of in-training and less experienced surgeons.

Adult↗