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1.
Chem Commun (Camb) ; 50(14): 1658-61, 2014 Feb 18.
Article in English | MEDLINE | ID: mdl-24400323

ABSTRACT

Oxovanadium complexes are presented as new labels for the development of electrochemical immunosensors. The concept was successfully applied to the accurate detection of estradiol, an emerging environmental pollutant, at concentrations ranging from 4 ng L(-1) to 5 µg L(-1).


Subject(s)
Biosensing Techniques/methods , Environmental Pollutants/analysis , Estradiol/analysis , Ethylenediamines/chemistry , Immunoassay/methods , Organometallic Compounds/chemistry , Vanadates/chemistry , Electrochemistry , Environmental Pollutants/classification , Estradiol/chemistry
2.
J Radiol ; 89(9 Pt 1): 1077-80, 2008 Sep.
Article in French | MEDLINE | ID: mdl-18772785

ABSTRACT

PURPOSE: To assess the value of US of the mastectomy site at the time of follow-up of the contralateral residual breast. MATERIALS AND METHODS: Over a 5 year period, 251 patients with previous mastectomy underwent 505 unilateral mammographies with US of the mastectomy site. The time delay between imaging and mastectomy ranged between 1-15 years, with a mean of 7.5 years. Lesions at the mastectomy site were classified as follows: BIRADS 2 for a cyst or prominent edema, BIRADS 3 for a lymph node with preserved fatty hilum or mildly echogenic cyst, BIRADS 4 for well-defined hypoechoic lesions, and BIRADS 5 for ill-defined lesions. RESULTS: None of the lesions classified as BIRADS 1, 2 or 3 was malignant. Eleven lesions were classified as BIRADS 4: 3 benign lesions, 7 malignant lesions, and 1 non-verified lesion. No lesion was classified as BIRADS 5. CONCLUSION: Systematic US evaluation of the mastectomy site appears warranted since only 1 of 7 malignant lesions was clinically palpable prior to US whereas all were retrospectively palpable after US.


Subject(s)
Breast Neoplasms/diagnostic imaging , Breast Neoplasms/surgery , Neoplasm Recurrence, Local/diagnostic imaging , Adult , Aged , Aged, 80 and over , Female , Follow-Up Studies , Humans , Middle Aged , Retrospective Studies , Ultrasonography
3.
Eur Radiol ; 15(2): 263-6, 2005 Feb.
Article in English | MEDLINE | ID: mdl-15662478

ABSTRACT

We describe the imaging features of a tailgut cyst mistaken for an adnexal mass. A pelvic ultrasound in a 28-year-old woman showed a 10-cm hypoechoic left pelvic mass. Having not seen the left ovary, the radiologist concluded that the mass was an endometrioma. CT disclosed a retrorectal cystic lesion with wall calcifications and internal septa. MR confirmed the extra-ovarian location of the tumor, which was hyperintense on T2-weighted images and had an intermediate signal on T1-weighted images. Surgery revealed a retrorectal cystic hamartoma. Radiological diagnosis of a tailgut cyst requires first correct localization of the tumor and then differentiation from other retrorectal masses.


Subject(s)
Hamartoma/diagnosis , Rectal Diseases/diagnosis , Adnexal Diseases/diagnostic imaging , Adult , Diagnosis, Differential , Female , Hamartoma/surgery , Humans , Magnetic Resonance Imaging , Rectal Diseases/surgery , Tomography, X-Ray Computed , Ultrasonography
4.
J Mal Vasc ; 29(4): 205-9, 2004 Oct.
Article in French | MEDLINE | ID: mdl-15529084

ABSTRACT

We report a case of asymptomatic occlusion of the right internal carotid artery owing to the presence of a rare anatomic variant (occipital artery originating from the extracranial segment of the internal carotid artery). During the preoperative workup for a coronary artery bypass grafting (CABG) in a 65-year-old patient, an occlusion of the right internal carotid artery was visualized on Duplex ultrasound. Distally to the occluded site, the artery was patent thanks to a vessel parallel to it but with a reverse blood flow. MRA and angiography of the brachiocephalic trunk confirmed the occlusion of the internal carotid artery and its opacification distally via an aberrant occipital artery arising at the supra-bulbar level and communicating with the right vertebral artery. Therapeutic abstention was decided and the patient was operated of CABG without any neurological complication. Occipital artery arising from the internal carotid artery is a rare anomaly. Its association with internal carotid artery occlusion may be beneficial because it makes surgery possible, even in a chronic stage, if the patient is symptomatic. If the patient is asymptomatic, therapeutic abstention could be considered.


Subject(s)
Carotid Artery, Internal/abnormalities , Aged , Carotid Artery, Internal/diagnostic imaging , Humans , Magnetic Resonance Angiography , Male , Ultrasonography, Doppler, Color
5.
J Mal Vasc ; 26(4): 262-4, 2001 Oct.
Article in French | MEDLINE | ID: mdl-11679857

ABSTRACT

Iodine-induced renal failure is a major concern when considering angiography in patients with renal insufficiency. Previous studies have shown that gadolinium can perform well as a radiographic contrast agent and is not nephrotoxic at doses < or = 0.4 mmol/kg. We report high-quality images of the inferior vena cava, obtained by digital subtracted venography using power-injected gadodiamide through the common femoral vein. This technique, in combination with ultrasound, appears as a good alternative for insertion of vena cava filters in patients with renal failure or those with prior episodes of contrast induced renal failure or allergy.


Subject(s)
Contrast Media , Gadolinium DTPA , Renal Insufficiency/complications , Renal Veins/diagnostic imaging , Thrombophlebitis/complications , Thrombophlebitis/therapy , Vena Cava, Inferior/diagnostic imaging , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Radiography , Ultrasonography
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