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6.
Gastrointest Radiol ; 12(1): 53-8, 1987.
Article in English | MEDLINE | ID: mdl-3792759

ABSTRACT

True annular malignancies of the small bowel with mucosal destruction and shelflike margins are generally thought to be caused by primary adenocarcinoma. At our institution, 18 annular malignancies were diagnosed radiographically in the small bowel by enteroclysis (16 cases) and conventional small bowel follow-through studies (2 cases) between 1977 and 1984. However, pathologic data revealed only 4 primary adenocarcinomas with 10 metastatic lesions (6 colon cancers, 2 malignant melanomas, 1 lung cancer, and 1 cervical cancer), 2 leiomyosarcomas, 1 non-Hodgkin's lymphoma, and 1 malignant carcinoid tumor. While these lesions may be indistinguishable radiographically, annular carcinomas tended to be short, relatively nonobstructing lesions; annular metastases (except those from malignant melanoma) tended to be highly obstructing lesions with significant narrowing and/or angulation of the bowel. Leiomyosarcomas, lymphoma, and metastases from malignant melanoma tended to be longer lesions with extensive ulceration, wider channels, and little or no evidence of obstruction. Nevertheless, surgical resection or biopsy of the lesion is ultimately required for a definitive diagnosis.


Subject(s)
Intestinal Neoplasms/diagnostic imaging , Intestine, Small , Adenocarcinoma/diagnostic imaging , Adenocarcinoma/pathology , Adult , Aged , Aged, 80 and over , Female , Humans , Intestinal Neoplasms/pathology , Intestine, Small/diagnostic imaging , Intestine, Small/pathology , Male , Middle Aged , Radiography , Retrospective Studies
7.
Science ; 197(4301): 390-1, 1977 Jul 22.
Article in English | MEDLINE | ID: mdl-877562

ABSTRACT

Telenomus alsophilae, a parasite of the eggs of the geometrid Alsophila pometaria in North America, was introduced into Columbia, South America, for the biological control of a pest host in another genus, Oxydia trychiata. Successful results were obtained with this unorthodox procedure to control a forest insect.


Subject(s)
Insect Control/methods , Pest Control, Biological/methods , Animals , Hymenoptera/growth & development , Lepidoptera/parasitology , Species Specificity
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