PubMed Health⌕ Search

Biomedical subjects

J Kiesler

Publications and source records attributed to J Kiesler.

16 recordsLinked to original sources
PubMed1993

Epithelial misplacement after biopsy of colorectal adenomas.

The question has been raised as to whether the removal of biopsy material from colorectal adenomas can lead to misplacement of tumour fragments into the deeper layers of the bowel wall. We carried out an analysis of histological sections obtained from 21 patients in whom, between 2 and 21 days before removal of their adenoma, forceps biopsy (n = 18), or polypectomy (n = 3) had been performed. The initial histological picture a few days after biopsy is of an ulcer covered by a suppurative exudate and abundant mucus-containing small, free-lying groups of tumour cells. After an average of 7 days, we found misplacement of these groups of cells into the submucosa where, during the course of reparative processes, they became embedded within a capillary-rich granulation tissue. Subsequently, fibrosis of the submucosa develops with persistent mucus pools. Our results thus show that removal of biopsy material from adenomas can result in misplacement of tumour particles into the submucosa. These changes were observed in flat or broad-based tumours, and epithelial misplacement appears to be detectable within only a short period after biopsy. For the differential diagnosis, it is important to distinguish these changes from invasive carcinoma.

Adenoma↗
PubMed1986

[Diagnosis of (intra)-cystic breast cancer].

Besides the known intracystic carcinoma of the breast there are also other cystic tumour types such as, for example, the cystically necrotized carcinoma of the mamma. Preoperative diagnosis of these tumours is effected via pneumocystography and aspiration cytology if mammography alone does not yet permit a definitive assessment of the tumour status. If sonography is used as the only additional examination, diagnostic errors are likely to happen. The well-known recommendation according to which sonographically identified ("simple") cysts can be left as they are, deserves further discussion under this aspect. The problems associated with histological classification and preoperative diagnosis are discussed taking five cystic carcinomas of the breast as basis.

Adult↗
PubMed1984

Morphology and incidence of testicular tumors in western Austria (1945-1980).

During the years 1945-1980 260 testicular tumors were registered in the two western provinces of Austria ( Tyrol and Vorarlberg ). The histological slices of these tumors were revised and classified according to the revised "British Classification" ( Pugh 1976). 91.9% of investigated testicular tumors were of germinal cell origin: 43.8% of them were seminomas and 38.1% teratomas. Combined tumors first appeared regularly when the surgical material was completely processed. The right side was more common affected than the left, in the ratio 7:5. The age of orchidectomy showed the typical peaks for seminomas, teratomas and combined tumors. 60% of germinal cell tumors were operated in stage pT3 (UICC). The average incidence of all testicular tumors in the years 1945-1980 was 1.9/100,000 males, but in the last decennium (1971-1980) the average incidence was 4.0, with a maximum of 6.9 in 1978. Districts with a high percentage of employed in agriculture and forestry showed lower incidences than industrialized areas.

Adolescent↗
PubMed1980

[Morphology of the liver in anthracosilicosis (author's transl)].

Histological sections of the liver taken at the autopsy of 26 patients with anthracosilicosis of different degrees of severity were investigated retrospectively. Single macrophages containing dust were found in the portal fields, as well as dust storing Kupfer cells proliferating centroacinarity. Granuloma of the walls of central and sublobular veins could be observed, containing infiltrates of lymphocytes and plasma cells, proliferating fibroblasts including histiocytes, and fibrosis and hyalinisation in later stages. It may be assumed, that dust pigments are being transported by blood and taken up by Kupler cells in the first line, to be transmitted directly to the central vein and to a lesser degree by way of lymph drainage into the portal mesenchyma in a later stage. These morphological changes of the liver apparently did not cause any clinical symptoms; they could be found in a high percentage of all patients, which did not have cirrhosis of the liver, and they could be found in all degrees of severity of anthracosilicosis. Thus liver biopsy will yield valuable diagnostic results in this granulomatous disease of the liver as well.

Anthracosilicosis↗
PubMed1979

[Lipoma and pseudolipoma of the liver (author's transl)].

Tumors and tumorlike lesions of fatty tissue arise only rarely in the liver. Those solitary nodules usually do not extend 2 cm in size and therefore remain clinically asymptomatic. Their gross appearance demands differential diagnosis from other tumorous or granulomatous lesions by means of biopsy and histological examination. Two characteristic cases with review of the literature are presented.

Aged↗
PubMed1976

[Inverted urothelial papilloma (author's transl)].

Casuistic report dealing with the observation of an inverted papilloma arising from the pars prostatica urethrae. By means of the literature, clinical and pathologic problems of this scarcely known neoplasm, which was not delimitated in the German literature before 1963, are discussed.

Adult↗