PubMed Health⌕ Search

Biomedical subjects

E Arad

Publications and source records attributed to E Arad.

11 recordsLinked to original sources
PubMed1998

Cutaneous larva migrans, sacroileitis, and optic neuritis caused by an unidentified organism acquired in Thailand.

We report the case of a 32-year-old pregnant woman with an unidentified intraocular parasite. The parasite, which had been acquired in Thailand, caused cutaneous larva migrans, sacroileitis, and 2 years later optic neuritis and panuveitis. The patient was successfully treated with ivermectin and albendazole. The diagnostic possibilities of this peculiar presentation are discussed. Parasitic infections are a leading cause of medical problems in travelers to tropical countries.1 While most parasites cause gastrointestinal problems, some may migrate throughout the body and lodge in critical organs. Ocular parasitic infections may occur by direct inoculation onto the eye,2 or incidentally during systemic migration. Subconjunctival parasites are easily diagnosed by removal and careful microscopic examination.3 Parasites, which lodge within the eye, are more difficult to diagnose, especially if not removed. In this report we describe a patient who presented with an intraocular parasite causing optic neuritis and panuveitis, 2 years after travel to Thailand.

Adult↗
PubMed1998

Is there a role for low doses of mitotane (o,p'-DDD) as adjuvant therapy in adrenocortical carcinoma?

Four patients suffering from adrenocortical carcinoma were treated with low doses (1.5-2.0 g) of mitotane (o,p'-DDD) for the complete follow-up time following surgery (21-68 months). Treatment with mitotane was started shortly after surgical removal of the tumor (three patients) or the tumor and multiple lung metastasis (one patient). No significant side effects or complications from the medication were noted. Two patients remain disease free after 57 and 21 months on treatment. A third patient died of an unrelated reason (varicose vein bleeding) after 68 months on mitotane without evidence of tumor recurrence or metastasis. In the fourth patient, two lung metastasis were successfully removed after 48 months of follow-up. The patient is doing well and is disease free 6 months later. Though our series is too small to draw final conclusions, we suggest that low doses of mitotane, which are well tolerated, might offer prolonged disease-free survival in adrenocortical carcinoma. To be beneficial treatment has to be started early after surgical removal of the tumor and metastasis, and be continued for long periods of time.

Adrenal Cortex Neoplasms↗
PubMed1997

Late complications in remission from Cushing disease. Recurrence of tumor with reinfarction or transformation into a silent adenoma.

Two of 4 patients who underwent spontaneous remission from Cushing disease (CD) demonstrated regrowth of the pituitary adenoma 2 and 5 years later. In the first patient, the recurrent tumor also secreted corticotropin, with subsequent relapse of fulminant cushingoid features. However, after 14 more months, it again became infarcted, and the patient underwent complete clinical remission, which has persisted for about 3 years. In the second patient, the regrowth of the tumor occurred silently, as no clinical cushingoid features or rise in cortisol levels were noticed. Because of its size, the tumor was resected and found to have immunoreactivity for corticotropin (silent corticotroph adenoma). About 4 years after the first operation, a second surgical procedure was performed because of massive regrowth of the tumor. Again, there was no concomitant elevation of cortisol levels or endocrinologic symptoms. This time, the tumor did not even stain for corticotropin. While spontaneous remission in CD is rare, recurrence is even rarer. Reremission of CD and the change from a corticotropin-secreting adenoma to a silent one are described herein for the first time (to our knowledge). These cases demonstrate that patients with CD have to receive careful follow-up, even if they undergo remission, and that the long-term outcome of such remission is unpredictable.

Adenoma↗
PubMed1997

One microgram is the lowest ACTH dose to cause a maximal cortisol response. There is no diurnal variation of cortisol response to submaximal ACTH stimulation.

There are many suggestions in the literature that the adrenal gland is more sensitive to ACTH in the evening than in the morning. However, all these studies in humans were conducted when the basal cortisol level was not suppressed, and were based on the observation that, after stimulation, the increases in cortisol differed, though the peak values were the same. To examine this, we established the lowest ACTH dose that caused a maximal cortisol stimulation even when the basal cortisol was suppressed, and used a smaller dose of ACTH for morning and evening stimulation. The lowest ACTH dose to achieve maximal stimulation was found to be 1.0 microgram, with which dose cortisol concentration increased to 607.2 +/- 182 nmol/l, compared with 612.7 +/- 140.8 nmol/l with the 250 micrograms test (P > 0.3). The use of smaller doses of ACTH (0.8 and 0.6 microgram) achieved significantly lower cortisol responses (312 +/- 179.4 and 323 +/- 157.3 nmol/l respectively; both P < 0.01 compared with the 1 microgram test). When a submaximal ACTH dose (0.6 microgram) was used to stimulate the adrenal at 0800 and 1600 h, after pretreatment with dexamethasone, no difference in response was noted at either 15 min (372.6 +/- 116 compared with 394.7 +/- 129.7 nmol/l) or 30 min (397.4 +/- 176.6 compared with 403 +/- 226.3 nmol/l; P > 0.3 for both times). These results show that 1.0 microgram ACTH, used latterly as a low-dose test, is very potent in stimulating the adrenal, even when baseline cortisol is suppressed; smaller doses cause reduction of this potency. Our data show that there is probably no diurnal variation in the response of the adrenal to ACTH, if one eliminates the influence of the basal cortisol level and uses physiologic rather than superphysiologic stimuli.

Adrenocorticotropic Hormone↗
PubMed1996

[Hemorrhagic cystitis as a presenting symptom of acute infection with Salmonella typhi].

Salmonellae are frequently isolated from urine during the course of typhoid fever, although cystitis in typhoid is rare. In a young man who had returned from India with severe hemorrhagic cystitis, urine and bone marrow cultures confirmed the diagnosis of typhoid. Full recovery followed treatment with chloramphenicol. This case illustrates an unusual presentation of typhoid fever and the illustrates an unusual presentation of typhoid fever and the diagnostic difficulties occasionally encountered in patients returning from developing countries.

Adult↗
PubMed1993

Ablation of remaining functioning thyroid lobe with radioiodine after hemithyroidectomy for carcinoma.

Nineteen patients who had hemithyroidectomy as a surgical procedure for thyroid cancer were given radioiodine to ablate the residual hemithyroid. Two different protocols were used, with either a larger single dose or multiple smaller doses. Ablation was achieved in 28% with the single large dose approach and in 33% of patients given split doses of similar total amount. This response to the initial attempt at eradication of the residual normal hemithyroid is considerably lower than the accepted ablation rate with comparable doses administered to patients with small thyroid residues after total thyroidectomy. It is suggested that the effect of radioiodine treatment may relate inversely to the size of the thyroid remnant. Our findings also are in support of the surgical approach advocating total thyroidectomy for patients contemplating ablation of thyroid residues after surgery for thyroid carcinoma.

Adult↗
PubMed1990

Fractionated doses of radioiodine for ablation of postsurgical thyroid tissue remnants.

Patients who have differentiated thyroid carcinoma and have undergone total thyroidectomy are treated with radioiodine for ablation of functional thyroid remnants. Administration of a single therapeutic dose in excess of 30 mCi of l-131 requires hospitalization. In an attempt to obviate the necessity for hospitalization, the prospective ablative dose was divided into two or three fractions given at weekly intervals on an ambulatory basis. To assess the effectiveness of this approach, this group of patients was compared to a cohort of hospitalized patients treated with a single dose. Ablation was achieved in 9 out of 12 patients treated in a fractionated manner (a 75% success rate), whereas in 16 out of 20 patients given a single dose the thyroid remnants were completely eradicated (an 80% success rate). That the use of split, smaller doses administered at weekly intervals on an ambulatory basis presents a reasonable alternative for ablation of postsurgical, residual-functioning thyroid tissue.

Adult↗
PubMed1987

Massive hepatic steatosis complicating adult celiac disease: report of a case and review of the literature.

Hepatomegaly, chronic diarrhea, and weight loss in a middle-aged woman were found to be due to massive hepatic steatosis and adult celiac disease. After she was on a gluten-free diet for 1 yr, improvement in clinical, laboratory, and pathological parameters was witnessed. Massive hepatic steatosis complicating adult celiac disease is an uncommon occurrence, differing from other, more frequently encountered hepatopathies in this disease, insofar as pathogenetic and prognostic aspects are concerned.

Adult↗