RESUMEN

We report the clinical and computed tomography (CT) features of seven patients with osteomyelitis of the symphysis pubis following radiotherapy for bladder (n=4) or cervical (n=3) carcinoma. The patients presented with fistulae (n=5), pain (n=1) or small bowel obstruction (n=1) between 6 and 19 years after radiotherapy. The diagnosis was confirmed by surgery with histology or bacteriology of the symphysis pubis and/or associated abscess in all patients. In addition to bone destruction, other features identified on CT included abscesses, bowel loops adherent to the symphysis pubis and/or communicating with an abscess cavity, a soft tissue mass enveloping the residual bone, and fistulae. The combination of clinical and radiological features suggests osteomyelitis and, for patients who have had pelvic radiotherapy, this treatable condition should be included in the differential diagnosis of solitary symphysis pubis destruction.

Asunto(s)

Osteomielitis/diagnóstico por imagen , Sínfisis Pubiana/diagnóstico por imagen , Traumatismos por Radiación/diagnóstico por imagen , Neoplasias de la Vejiga Urinaria/radioterapia , Neoplasias del Cuello Uterino/radioterapia , Adulto , Diagnóstico Diferencial , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Osteomielitis/etiología , Sínfisis Pubiana/efectos de la radiación , Traumatismos por Radiación/etiología , Radioterapia/efectos adversos , Tomografía Computarizada por Rayos X

RESUMEN

A technique is described for the rapid purification of indole-3-acetic acid (IAA) and abscisic acid (ABA) from small quantities of the basal trunk cambial region tissues of 34-year-old trees of Quercus robur L. Mass spectra of IAA and ABA obtained from the purified extracts provide the first reported unequivocal identification of endogenous IAA and ABA in the cambial region of a hardwood species. By use of the combined gas chromatography-mass spectrometry technique of multiple ion monitoring, with deuterated analogs as internal standards, it was shown that the levels of IAA in the cambial region tissues varied from ~1 to ~20 microg g(-1) and those of ABA from ~1 to ~5 microg g(-1) dry weight during the growing season. The high levels of IAA are similar to those found in the newly differentiating xylem tissues of softwoods.