Cases reported "Carcinoma, Squamous Cell"

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11/20. Attempt at local administration of anticancer agents in the form of fat emulsion.

    A fat emulsion when injected into tissue is scarcely taken up by the blood vascular system but is retained within the tissue over a relatively extended period, and is distributed slowly into the surrounding tissues and to the regional lymph nodes. Attempts were made to use this property of the emulsion in the local administration of anticancer agents in emulsion, both in experimental animals and in man. The concentrations of bleomycin in the tumor tissue of rats were significantly higher after the intratumoral injection of the emulsion form than when the drug was administered in the aqueous solution, either systemically or intratumorally. Experimental antitumor activity against this tumor was superior after the bleomycin emulsion, as well. In the clinical trials six of eight patients with either squamous cell carcinoma of skin or local recurrence of adenocarcinoma of the breast responded favorably to this treatment.
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12/20. association of squamous carcinoma of the esophagus with a synchronous primary hepatocellular carcinoma.

    We have seen a patient with a squamous carcinoma of the esophagus along with hepatocellular carcinoma. Though the simultaneous occurrence of these tumors is rare, we propose that their development may be more than a chance occurrence. Since many chemical carcinogens which promote esophageal cancers in experimental animals also promote hepatic malignancies, it is possible that dietary nitrosamines in man, causally implicated in esophageal carcinoma, may also sometimes induce hepatic carcinoma in the same patient.
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13/20. radiation induced cancer: a report of 10 cases.

    Ionizing radiations have been shown to be carcinogenic to man as well as experimental animals. Malignancies following therapeutic radiation occur rarely. Over the past 10 years the authors recorded 10 cases of tumours in irradiated tissues. 3 occurred in patients irradiated for nasopharyngeal carcinoma, 3 were irradiated for tuberculosis adenitis, 2 for carcinoma of the cervix, 1 for carcinoma of the breast and 1 for basal cell carcinoma. The latent period for tumour induction following the irradiation varied from 5 years to 31 years. All these cases showed no evidence of recurrence or metastases of the original primary lesion; and the histology of the second primary differed from the first. Evidence of radiation damage was seen in all cases except for 2 patients who were treated for tuberculosis adenitis. The doses received varied from 900r to about, 9000r. Among the tumours produced, there were 3 cases of squamous cell carcinoma of the oral & postcricoid region, 2 cases of papillary carcinoma of the thyroid, 2 cases of adenocarcinoma of the rectum, 1 case of adenocarcinoma of the ethmoid, 1 case of osteosarcoma of the mandible and 1 case of extraskeletal osteosarcoma. The clinical features of these cases are discussed and other cases reported in the literature are reviewed.
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14/20. Effect of trigeminal tractotomy on dental sensation in humans.

    Two patients with intractable pain of the head and neck due to cancer underwent trigeminal tractotomy and rhizotomy of the ninth and 10th cranial nerves, as well as an upper cervical dorsal rhizotomy. Postoperatively, cutaneous analgesia ws present ipsilaterally in peripheral portions of the face and the neck, but paramedian facial regions and the oral mucosa were hypalgesic. The procedures had no significant effect on dental pain perception in these patients, as tested electrically and thermally. These results are similar to those in recent reports of dental sensation after trigeminal tractotomy in animals. The results raise questions about the validity of the commonly espoused hypothesis that trigeminal nucleus caudalis is the exclusive locus for processing of orofacial nociceptive information. The findings are consistent with the idea that the entire spinal trigeminal nucleus serves as a site for integration of pain-related information from orofacial structures that are supplied by afferent fibers in the fifth, seventh, ninth, and 10th cranial nerves and the upper cervical nerve roots.
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keywords = animal
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15/20. Regression of head and neck carcinoma with a prostaglandin-synthesis inhibitor.

    The in vivo administration of a prostaglandin-synthetase inhibitor inhibited or reduced tumor growth in cancer patients and experimental animals. indomethacin, a prostaglandin-synthetase inhibitor and nonsteroidal anti-inflammatory agent commonly used in the management of arthritic patients, acted as an immune adjuvant by decreasing the production of prostaglandins. Seven cases demonstrated that indomethacin taken in the usually recommended dosages causes regression and stabilization of head and neck cancer. The following factors were also considered in this study: prostaglandin production, a survey of other reports of solid neoplasm response to prostaglandin-synthetase inhibitor administration, drug toxicity, irradiation therapy and metastases, the need for tumor biopsy, and the role that reduction in inflammation plays in tumor shrinkage.
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16/20. Ablation of neoplasia by direct current.

    The application of low-voltage direct electrical current (DEC) has been studied in animals and humans for the ablation of anal condylomata, oesophageal cancer and Kaposi's sarcoma. Twenty milliamps of DEC passed through multiple 6 cm x 1 cm, flat-plate longitudinal electrodes into the squamous mucosa of the oesophagus of healthy dogs for periods ranging from 10 min to 2 h resulted in denudation and necrosis of the oesophageal mucosa at the site of application of the current. In humans, the application of DEC to two patients with benign anal condyloma acuminata, three patients with inoperable obstructing oesophageal cancer and one patient with disseminated Kaposi sarcoma resulted in striking necrosis of tumour tissue that was confirmed by macroscopic and microscopic studies. These initial findings imply promising therapeutic potential for the use of DEC as a simple, effective, safe, low-cost alternative for ablation of neoplasia.
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17/20. doxorubicin hydrochloride-associated renal failure.

    doxorubicin hydrochloride (Adriamycin) therapy was associated with renal failure in a 78-year-old man. The pathophysiologic findings in this patient were similar to those seen following administration of structural analogues of doxorubicin. daunorubicin hydrochloride, particularly, is known to cause renal failure in experimental animals. Renal function should be monitored in patients receiving doxorubicin.
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18/20. Exposure to domestic cats: risk factor for pasteurella multocida peritonitis in liver cirrhosis?

    pasteurella multocida is most commonly associated with acute skin and soft tissue infections following an animal bite or scratch. peritonitis caused by P. multocida in patients with cirrhosis is rarely reported. We present a case of spontaneous bacterial peritonitis with P. multocida in a patient with cirrhosis, squamous cell cancer of the head and neck, and nontraumatic domestic cat exposure. Nasopharyngeal colonization with P. multocida, with subsequent transient bacteremia and seeding of the peritoneum in immunocompromised (particularly cirrhotic) cat-owners, could play an important pathogenetic role in the development of spontaneous bacterial peritonitis. A review of the literature showed that in nine of 13 patients with cirrhosis and P. multocida peritonitis, exposure to domestic animals was reported. The mortality rate is high in this setting, even with prompt antibiotic treatment. Preventive strategies for immuno-compromised patients should include minimization of animal contact, especially cats, which have a high carriage rate (70-90%) of P. multocida.
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ranking = 3
keywords = animal
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19/20. Effects of bisphosphonate (pamidronate) on bone resorption resulting from metastasis of a squamous cell carcinoma: report of an autopsy case and evaluation of bone resorbing activity in an experimental animal model.

    PURPOSE: This study evaluated the ability of bisphosphonate to prevent bone resorption induced by metastatic tumor cells. MATERIALS AND methods: autopsy specimens of a bone metastasis from a woman with a primary squamous cell carcinoma of the tongue who developed multiple osteolytic lesions and hypercalcemia and was treated with pamidronate were studied histologically, histochemically, and ultrastructurally. In an animal experiment, cultured tumor cells (1 x 10(5)) obtained from a metastatic submandibular lymph node in the same patient were injected in the left ventricle of nude mice, and a resulting metastatic bone lesion was studied histologically and histochemically. RESULTS: In the autopsy specimens, despite the presence of many resorption lacunae on bone surface, only a few small tartrate-resistant acid phosphatase (TRAPase)-positive cells were observed, and most of them were stained weakly and detached from the bone surface. In the animal experiment, 1 of 10 animals (10%) formed osteolytic bone metastasis, and many TRAPase-positive cells were observed histochemically. CONCLUSIONS: Biphosphonate inhibits bone resorption induced by tumor, possibly by decreasing the number of osteoclasts and inhibiting their function.
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keywords = animal
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20/20. Histological identification of carcinoma in 21 gauge needle tracks after fine needle aspiration biopsy of head and neck carcinoma.

    Six cancer resection specimens were thoroughly sectioned and microscopically examined at areas known to have been around 21 gauge fine needle aspiration (FNA) biopsy sites, in an attempt to identify needle tracks. All cases had an interval of not less than 10 days between FNA biopsy and surgery. Foci of tumour were identified histologically in needle tracks from two patients with carcinoma. This is the first instance, outside of experimental animal models, of histologically confirmed, viable tumour spread in FNA biopsy tracks. Although this complication is not common and is of unknown clinical significance, it is one that all clinicians who undertake FNA of malignant neoplasms should be aware of.
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