Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0024523 (malabsorption)
 7,319 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Roux-en-y-gastric bypass (RYGB) is the most commonly performed bariatric procedure worldwide which is taking the lead in resolving of comorbid conditions. Short- and long-term complications of RYGB procedure have been recognized, including osteopenia, osteomalacia and more rarely neurological disorders. Oxalate nephropathy is a complication of RYGB that has been described earlier in the literature and may end with renal failure and dialysis if not recognized and treated early. The etiology of this phenomenon is still unclear, but the length of common limb remains the theory that mostly contributed to its development. We believe that this limb should be more than 100 cm to prevent severe malabsorption. Here, we report a reversible case of oxalate nephropathy 3 months after RYGB in a 51-year-old patient.
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PMID:A case of reversible hyperoxaluria nephropathy early after roux-en-y-gastric bypass induced by vitamin C intake. 2949 51

Enteric hyperoxaluria is a distinct entity that can occur as a result of a diverse set of gastrointestinal disorders that promote fat malabsorption. This, in turn, leads to excess absorption of dietary oxalate and increased urinary oxalate excretion. Hyperoxaluria increases the risk of kidney stones and, in more severe cases, CKD and even kidney failure. The prevalence of enteric hyperoxaluria has increased over recent decades, largely because of the increased use of malabsorptive bariatric surgical procedures for medically complicated obesity. This systematic review of enteric hyperoxaluria was completed as part of a Kidney Health Initiative-sponsored project to describe enteric hyperoxaluria pathophysiology, causes, outcomes, and therapies. Current therapeutic options are limited to correcting the underlying gastrointestinal disorder, intensive dietary modifications, and use of calcium salts to bind oxalate in the gut. Evidence for the effect of these treatments on clinically significant outcomes, including kidney stone events or CKD, is currently lacking. Thus, further research is needed to better define the precise factors that influence risk of adverse outcomes, the long-term efficacy of available treatment strategies, and to develop new therapeutic approaches.
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PMID:Pathophysiology and Treatment of Enteric Hyperoxaluria. 3290 Jun 91

Purpose: Radioactive iodine therapy with 131I is standard of care for treatment for many patients with differentiated thyroid cancer. Typically, 131I is administered as a pill, and much of its radioactivity gets excreted via the urine. This can present challenges in patients who are unable to swallow pills, absorb iodine via the gastrointestinal tract, or eliminate radioiodine via the urine (i.e. dialysis patients and patients with renal failure). In this case series, we present three cases in which the standard 131I treatment protocol for thyroid cancer could not be executed due to these challenges, and discuss the strategies to overcome these challenges. Results: Case 1 was a 4-year-old male with Noonan syndrome, dysphagia, and metastatic papillary thyroid cancer. He was unable to swallow the standard 131I pill due to the dysphagia. After a multi-disciplinary discussion between healthcare staff, a joint decision was made to proceed with liquid 131I therapy. The system, which was used to orally administer 75 mCi (2775 MBq) of Na131I in a liquid form, involved a vial provided to allow for mixing in grape juice. Case 2 was a 45 year-old male patient with significant scleroderma, severe gastric motility disorder, and papillary thyroid carcinoma. His severe gastric motility and malabsorption disorder precluded oral treatment due to risks of vomiting. Per discussions and collaborations with the patient's gastroenterologist, the decision was made to proceed with intravenous 131I therapy, which was successfully performed after approval from the Radiological Health Branch of California. Case 3 was a 59 year-old male patient on hemodialysis with diabetes, hypertension, and follicular thyroid cancer. The challenge, in addition to waste disposal and dosimetry, was ensuring radiation protection for everyone present, given the risks of occupational exposures from radioactive iodine contaminating the dialysis machine. The radiation safety team monitored all healthcare workers and equipment involved, as per a joint decision by healthcare providers. Additionally, the planned dose was reduced from 50 mCi (1850 MBq) to 30 mCi (1110 MBq). None of the cases reported further disease progression since 131I treatment. Conclusion: These cases highlight unique challenges that can be encountered during radioactive iodine administration and approaches that can overcome these challenges. We conclude that provider collaboration and treatment customization are critical to overcome patient-specific challenges.
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PMID:Management of challenging radioiodine treatment protocols: a case series and review of the literature. 3321 59


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