Thiamine deficiency is known to lead to certain neurological sequelae including Wernicke- Korsakoff encephalopathy. Signs attributable to this condition include ataxia, ophthalmoplegia, nystagmus, and mental confusion. Recognised predisposing conditions include alcoholism gastric carcinoma, pyloric obstruction, hyperemesis gravidarum, and prolonged intravenous feeding. We have recently encountered two cases of Wernicke's encephalopathy after vertical banded gastroplasty for morbid obesity . Other neurological sequelae are recognised after vertical banded gastroplasty, including Guillain-Barre syndrome, psychosis, and pseudoathetosis, but the causes are multifactorial.

The well defined but rare entity of benign cystic mesothelioma is reported. The aetiology of this neoplasm remains obscure. The presenting features make a precise preoperative diagnosis difficult; information provided by computed tomography and cytology may help. A firm diagnosis can only come from electron microscopic or immunohistochemical examination of the tumour. Diagnostic accuracy and diligent follow up are essential because, although the tumour is considered benign, it does tend towards local recurrence.

BACKGROUND: Nutritional complications following surgery for morbid obesity include both vitamin and mineral deficiency. Severe cases of zinc deficiency can lead to alopecia, diarrhea, emotional disorders, weight loss, intercurrent infection, bullous-pustular dermatitis and hypogonadism in males. Hair loss may occur after vertical gastroplasty (VG). METHODS: Diffuse hair loss occurred in 47 out of 130 patients who underwent VG. All patients had been routinely advised to take a multivitamin supplement, but 47 developed hair loss despite taking the supplement. These patients were then prescribed Zinc Sulphate 200 mg three times a day. There was no alteration in the vitamin supplementation. RESULTS: Arrest of hair loss and regrowth occurred in all patients. However, five patients reported recurrence of hair loss after stopping zinc. This loss was reversed within 6 months of recommencing zinc 600 mg daily. Ten control patients had no hair loss after gastrointestinal surgery. CONCLUSION: Significant hair loss occurred in about one-third of patients after VG, and was reversed by zinc supplementation.

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