Micromachined Accelerometers with Sub-µg/√Hz Noise Floor: A Review.

This paper reviews the research and development of micromachined accelerometers with a noise floor lower than 1 µg/√Hz. Firstly, the basic working principle of micromachined accelerometers is introduced. Then, different methods of reducing the noise floor of micromachined accelerometers are analyzed.

[Esophageal cancer: surgical strategies].

Introduction: Oesophagectomy for cancer is associated to a significant morbidity and mortality. The superiority of transthoracic vs transhiatal is still a matter of controversy. The aim of this paper is to discuss the results of a series of patients submitted to either a transthoracic or a transhiatal according to the anatomic location regarding the carina.

An unusual fat-containing presacral tumor in an elderly patient.

The authors present a case of a presacral myelolipoma diagnosed in an 84-year-old male patient with longstanding pelvic pain and past medical history of bladder cancer. Pelvic computed tomography (CT) revealed a well-encapsulated and lobulated presacral mass, with mixed fat and soft-tissue attenuation. Magnetic resonance (MR) imaging provided further confirmation of macroscopic intralesional fat and excluded either adjacent bone invasion or bladder cancer recurrence.

Rare and severe complications of congenital adrenal hyperplasia due to 21-hydroxylase deficiency: a case report.

Introduction: We report the case of a patient with classical congenital adrenal hyperplasia due to 21-hydroxylase deficiency who presented with unusual anatomical and biochemical features, namely massively enlarged adrenal glands, adrenogenital rest tissue and an unexpected endocrine profile. The contribution of the adrenocortical cells in the adrenals and testicles was determined by a cosyntropin stimulation test before and after adrenalectomy. To the best of our knowledge this is the first report of such a case in the literature.

Alpha blockade with doxazosin in pheochromocytoma--report of three cases.

Pheochromocytoma is a catecholamine-secreting tumor, for which the treatment of choice is complete surgical resection, when possible. Some form of preoperative pharmacological preparation is indicated. Most centers use alpha blockade, phenoxybenzamine being the preferred drug.