A total of 42 cases undifferentiated large cell tumors were stained by immunoperoxidase techniques using antibodies against leukocyte common antigen (LCA) and epithelial membrane antigen (EMA). In 18 of the 21 cases studied, initially diagnosed as malignant lymphoma or Hodgkin's disease, reactivity with monoclonal anti-LCA (and noreactivity with monoclonal anti-EMA)indicated that the tumor was a lymphomas. The remaining 3 cases gave the reverse reaction pattern and therefore were classified as carcinoma. One out of 16 cases diagnosed as undifferentiated carcinoma proved to be a case of mialignant lymphoma in 5 patients in whom the original diagnosis was uncertain, a definite diagnosis was possible in all cases and 3 of these proved to be large cell lymphoma; the remainders, undifferentiated carcinoma. It is suggested that the staining of undifferentiated human neoplasms using combinations of antibodies reactive with epithelial and lymphoid cells may result in much greater diagnostic accuracy.
Humans

A total of 42 cases undifferentiated large cell tumors were stained by immunoperoxidase techniques using antibodies against leukocyte common antigen (LCA) and epithelial membrane antigen (EMA). In 18 of the 21 cases studied, initially diagnosed as malignant lymphoma or Hodgkin's disease, reactivity with monoclonal anti-LCA (and noreactivity with monoclonal anti-EMA)indicated that the tumor was a lymphomas. The remaining 3 cases gave the reverse reaction pattern and therefore were classified as carcinoma. One out of 16 cases diagnosed as undifferentiated carcinoma proved to be a case of mialignant lymphoma in 5 patients in whom the original diagnosis was uncertain, a definite diagnosis was possible in all cases and 3 of these proved to be large cell lymphoma; the remainders, undifferentiated carcinoma. It is suggested that the staining of undifferentiated human neoplasms using combinations of antibodies reactive with epithelial and lymphoid cells may result in much greater diagnostic accuracy.
Humans

Two cases of adenocarcinoma of the urinary bladder with clinical and pathological features, and brief review of the literatureare presented. Case 1: The patient, a 52 year-old man, was admitted to this hospital because of intermittent painless total gross hematuria for 15 years. Cystoscopy was done, and showing a cauliflower mass with broad based diffuse infiltrating lesion at the right anten or portion of bladder. TUR-B was performed. Microscopically, the lesion consisted of colonic metaplastic epithelium with atypical glands and cystic dilatation and adenocarcinoma. Case 2: The patient, a 52-year-old woman, was admitted to this hospital because of total painless gorss hematuria for 1 year. Cystoscopy was done showing a sessile diffuse mass with ulceration on the dome area. Total cystectomy was performed. Grossly, the tumor showed an ulcerative tumor mass with elevated nodular margin at the dome of the bladder. Microscopically, the lesion consisted of anaplastic glands with back to back arrangement and branching glands through the entire thickness of the bladder wall.
Female ; Humans ; Adenocarcinoma

No abstract available.
Colostomy* ; Humans

Thirty three cases of metastatic ovarian carcinoma were analysed cilincopathologically. The patient's age ranged from 20 to 68 years, the average being 44.3. Most ovarian tumors were bilateral and asymmertically enlarged, firm and occsaionally multicystic. Histologic examination revealed adenocarcinoma in 31 cases, of which Krukenberg tumors in 14; squamous cell carcinoma in 2. The most common primary site was gasrtointestinal(75.8%), followed by genital, breast and gallbaldder. Most Krukenberg tumors were originated from poorly differentiated adenocarcinoma of stomach. The ovarian and primary carcinomas were synchronously diagnosed in 15 cases, while in 3 cases the primary carcinoma was not round until the ovarian tumor had been removed.
Adenocarcinoma ; Neoplasm Metastasis

Thirty nine cases of multiple primary malignant tumors examined at the Department of Pathology, Keimyung University School of Medicine during the period from November 1974 through March 1986 were analysed clinicopathologically. The findings are as follows: 1) Thirty nine cases had synchronous lesion and six cases metachronous lesion. The second primary malignancy occurred mean 4.7 years after the first malignancy in patients with metachronous lesion. 2) The age at diagnosis of the first malignancy ranged from 26 to 76 years, the average being 51.8 years. The male-female ratio was slightly less than 1:1.2. 3) The most commonly involved site in multicentric origin was gastrointestinal tract (44.4%) with all adenocarcinoma and the second urogenital system (29.6%). In cases of different tissues or organs (11 cases), ovary was the most frequent site (5 cases), followed by cervix (4 cases). 4) Multiple primary malignant tumors of urogenital system were all eight cases and six cases among them (75%) had smoking and drinking habits. 5) The detailed informations about possible environmental, familial and host factors necessary for the investigation of multiple primary tumors were lacking in most cases. Therefore, the history taking with special attention to these factors must be carefully recorded. And also, we suggest that in the high-risk individuals, careful follow-up and thorough search for early cancer detection or prevention should be taken.
Female ; Male ; Humans ; Adenocarcinoma

The authors examined 9 condylomas, 26 cervical intraepithelial neoplasms(CIN) and 22 invasive squamous cell carcinomas for the presence of human papillomavirus(HPV) DNA sequences by DNA-DNA in situ hybridization. In situ hybridization revealed target HPV DNA sequences mostly in the nuclei of the superficial cells from epithelium which contained either maturation or koilocytotic atypias. With the use of biotinylated HPV DNA probes 6/11, 16/18 and 31/33/35, 42 of the 57(73.7%) were positive with HPV-6/11, 23 with HPV-16/18, 32 with HPV-31/33/35 and 18 with two or more mixed probes. HPV-31/33/35 was wht most prevalent in CIN and invasive squamous cell carcinomas, follwed by HPV-16/18. The incidence of HPV DNA increased from 66.7% to 86.4% with increasing severity of the lesions from condylomas to invasive squamous cell carcinomas. Flat condyloma was most freuently accompanied by CIN.
Humans ; Incidence

This study was carried out to investigate the mechanisms of acinar cell deletion, leading to the pancreatic atrophy of rat pancreas after experimental duct ligation. Fifty-seven male Sprague-Dawley rats, maintained on a stock diet, weighing 200 gm, in average, were divided into 2 experimental groups. Group 1. Control group. Six rats. Abdominal cavity was opened and closed without further treatment. Group 2. Fifty-one rats. Animals were treated with partial ligation of the pancratic ducts according to the procedure developed by Hultquist followed by sequential sacrifices at: 1 hour (3 rats), 3 hours (3 rats), 6 hours (6 rast), 12 hours (3 rats) and 24 hours (8 rats); 2 days (8 rats), 3 days (3 rats), 4 days (3 rats) and 5 days (5 rats); 1 week (3 rats), 2 weeks (3 rats) and 8 weeks (3 rats); after partial ligation was extirpated and examined by both light and electron microscopy. The results obtained were as follows: Light microscopically, noted were an interstitial edema and focal necrosis of the pancreatic tissue along with fine vacuolization and depletion of the zymogen granules in the acinar cell cytoplasms and condensation of the acinar cell nucleus. These changes were observed by 2 days after ligation. At about the same time, one can observe the dense body, identified to be apoptotic body, in the acinar cell which were found to be decreased in quantity. By 5 days after ligation, no recognizable acinar cells left in the collagenous stroma except intercalated ducts. Conspicuous stroma except intercalated ducts. Conspicuous stromal hyalinization, thereafter. Electron microscopically (TEM and SEM), nuclear condensation and margination toward the nuclear membrane was noted by 6 hours after duct ligation. By 24 hors sporadic membrane-bounded apoptotic bodies appeared in the acinar cells, the number of which reaching to the peak by 3 days after ligation. These apoptotic bodies were found to be phagocytosed by either intraepithelial mononuclear phagocytes or adjoining acinar cells. It can be concluded, therefore: That orderly remodeling of pancreatic exocrine tissue during atrophy is effected by rapid deletion of acinar cells by apoptosis.
Male ; Humans ; Rats ; Animals

Carcinosarcoma, often referred to as "malignant mixed tumor" is a rare neoplasm, but this tumor occurs in various organs, including the gallbladder. We report herein a carcinosarcoma of the gallbladder which consisted of adenocarcinomatous and undifferentiated sarcomatous ares, the latter differentiating towards abundant osteoid and calcified but nonlamellated bony trabeculae formation. There are 18 reported cases of this type tumor of the gallbladder in the literature.

No abstract available.
Lupus Erythematosus, Systemic*