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Biomedical subjects

I Cohn

Publications and source records attributed to I Cohn.

136 records · Page 8Linked to original sources
PubMedDate not supplied

Adenocarcinoma of the stomach: a review of 35 years and 1,710 cases.

The records of 1,710 patients with adenocarcinoma of the stomach treated at Charity Hospital over a 35-year period were reviewed to note any trends which might help in understanding the decreasing incidence and poor prognosis of the disease. The yearly number of gastric cancer patients has dropped from 234/100,000 in the 1950's to 195/100,000 in the 1960's to 108/100,000 patients in the last decade. The percentage of affected white males is decreasing at a rate equal to the increasing frequency of black female patients, while the ratios for black males and white females remain constant. The median age rose from 61.5 years to 66 years over the study period. The operability rate decreased from 82.4% to 72.8% and the resectability rate was 49%. Subtotal gastrectomy was the most common procedure, but radical subtotal gastrectomy gave the best 5-year survival. There are fewer lesions of the antrum today, but the highest number of 5-year survivors had antral lesions. Long-term survival of patients with lesions of the cardia improved from zero in the first 25 years to 14% in the last decade. For the last 2 decades, patients with stage III and IV lesions comprised one-half of the 5-year survivors. Our overall 5-year survival was 7.9%, but in the last decade it was 8.9%. Our 5-year survival for all patients who underwent a resection was 17.9%, but increased to 24.8% for the last decade. These improvements, in combination with a decrease in incidence, have dropped the overall mortality from gastric cancer.

Adenocarcinoma↗
PubMedDate not supplied

Overview of pancreatic cancer, 1989.

Pancreatic cancer remains a leading cause of death from cancer. Its incidence is rising throughout the world, not solely because of improved diagnostic techniques. Diagnosis is followed relatively rapidly by the demise of the patient, and reasons for this rapid course have been sought. Both patient and physician delay play roles in this course. In addition, spread of the lesion outside the confines of the pancreas is usually present at the time of diagnosis. Symptoms, age and sex distribution, pathologic types, location within the pancreas, and physical findings are discussed. The various diagnostic techniques are evaluated and compared. Choices of operations are discussed, including risks associated with each, survival results, and the recent decrease in operative mortality reported from several institutions. Some of the newer approaches to therapy are discussed--combinations of radiotherapy, operation, and palliative procedures. The importance of a diagnostic method that will detect the lesion at an earlier stage is stressed.

Humans↗
PubMedDate not supplied

Electron paramagnetic resonance investigation of high-spin iron (III) in cancer.

The concentration of iron (III)-transferrin (IT) in whole blood and serum, along with another high-spin (five unpaired electrons) iron complex (probably IT) accumulated by tumor tissue, was investigated by electron paramagnetic resonance (EPR) spectroscopy during the development of Murphy-Sturm rat lymphosarcoma. The observed changes in concentration (microgram/ml) of IT in sera/blood were generally complementary to those from tissue and the character of the modifications suggested the existence of three distinct phases of systemic response to the implantation: (1) an initial response, evidenced by a sharp reduction in serum IT and somewhat high tissue-IT concentration (microgram/g); (2) a period in which the tumor is (2) a period in which the tumor is becoming established, indicated by relatively constant tissue IT levels and near normal serum IT; and (3) the onset of rapid cell multiplication, characterized by increased total tissue-IT accumulation that rises to above 200% of normal available serum iron, increasing tissue-IT concentration, and rapidly declining serum-IT concentration. The results suggest that, in the face of an implanted tumor there are two detectable abnormal serum-IT responses: (1) an initial change, probably due to systemic blockage of iron reutilization; and (2) extraction of IT from serum by multiplying tumor cells, which is probably a major contributor to reduced serum-IT levels and ultimately anemia.

Animals↗
PubMedDate not supplied

Pancreatic cancer.

As a result of increased funding in the past few years, carcinoma of the pancreas has received increased investigative attention. A substantial body of epidemiologic data has been recorded, which may ultimately provide leads that identify an "at risk" population. Current diagnostic techniques enable clinicians to diagnose pancreatic lesions of relatively small size. Combined with further developments in the tumor marker field, it should be feasible to screen the at-risk population for early disease. Until then, only the early pancreatic lesion permits the slightest hope of cure.

Adult↗
PubMedDate not supplied

Functional limitation of motion of the first metatarsophalangeal joint.

The primary conditions characterized by functional limitation of motion of the first metatarsal are hallux limitus and hallux rigidus. The authors discuss the etiology, clinical manifestations, biomechanical compensatory mechanisms, and radiographic findings. Because only temporary relief is provided by conservative treatment, the various surgical approaches to treatment are discussed.

Arthrodesis↗