Zur Kenntis der akuten Ern?hrungsst?rungen im S?uglingsalter, II

Ohne Zusammenfassung     

Zur Entwicklungsgeschichte des Gebisses von Tarsius spectrum

Ohne ZusammenfassungHerrn Professor TANDLER zum 60. Geburtstage gewidmet.Mit 16 Textabbildungen.     

Lymphatic Drainage Patterns from the Treated Breast

Introduction

Lymphatic drainage patterns from the breast have been described in the past. Drainage may change after treatment of a breast or axilla, and this may have implications for lymphatic mapping. The aim of this study was to determine the lymphatic drainage patterns in breast cancer patients with a previously treated ipsilateral breast.

Methods

Between January 1999 and November 2008, 115 sentinel node procedures were performed in breast cancer patients who had undergone treatment of the ipsilateral breast in the past. Lymphatic drainage patterns were analyzed based on preoperative lymphoscintigraphy and sentinel lymph node biopsy. Patients were divided into subgroups according to their previous treatment.

Results

Sentinel nodes were found in 84% of the patients: in 81 patients (70%) in the axilla, 43 patients (37%) had drainage to more than one site, and in 18 patients (16%) no drainage was detected. The percentage of drainage outside the axilla was higher than in a series of untreated breast cancer patients from our institution (51% versus 33%, P = 0.01). The 16% nonidentification rate was also higher than the 3.1% in patients without previous treatment (P = 0.003). Four patients (3.5%) had lymphatic drainage to the contralateral axilla. Twelve patients (10%) had involved sentinel nodes; these were harvested from the contralateral axilla in two of them. No lymph node recurrences were observed during a median follow-up time of 39 months.

Conclusion

Lymphatic mapping yields a lymph node in 84% of breast cancer patients who have undergone previous treatment of the breast. Nonidentification and extra-axillary nodes are more frequently encountered than in patients without treatment of the breast in the past. The finding of involved nodes suggests that sentinel node biopsy improves staging. Long-term follow-up will determine the sensitivity of the procedure in this specific situation.     

Evidence for involvement of a tumor suppressor gene on 1p in malignant peripheral nerve sheath tumors

Malignant peripheral nerve sheath tumors (MPNST) are rare soft-tissue malignancies. The genetic basis of these tumors is still poorly understood. Cytogenetic analyses predominantly revealed complex karyotypes, precluding the identification of recurrent chromosomal changes. We report loss of 1p material in a near-diploid karyotype with few or no additional structural chromosome changes in two sporadic cases of MPNST, indicating an important role of 1p loss in MPNST development. In one of these two tumors, a distal 1p deletion (1p31.2 approximately pter) was detected suggesting involvement of a tumor suppressor gene located within this distal region of 1p. Further evidence for recurrent 1p loss in MPNST was obtained by interphase fluorescence in situ hybridization, which showed loss of 1p material in 3 out of 13 tumors. These findings together with data from the literature suggest that loss of a tumor suppressor gene located within distal 1p is implicated in the pathogenesis of MPNST.     

Lethal encephalitis in myeloid differentiation factor 88-deficient mice infected with herpes simplex virus 1

Herpes simplex virus 1 (HSV-1), a large DNA virus from the Herpesviridae family, is the major cause of sporadic lethal encephalitis and blindness in humans. Recent studies have shown the importance of Toll-like receptors (TLRs) in the immune response to HSV-1 infection. Myeloid differentiation factor 88 (MyD88) is a critical adaptor protein that is downstream to mediated TLR activation and is essential for the production of inflammatory cytokines. Here, we studied the relationship between MyD88 and HSV-1 using a purified HSV-1 isolated from a natural oral recurrent human infection. We observed the activation of TLR-2 by HSV-1 in vitro using Chinese hamster ovary cells stably transfected with a reporter gene. Interestingly, we found that only peritoneal macrophages from MyD88-/- mice, but not macrophages from TRL2-/- or from wild-type mice, were unable to produce tumor necrosis factor-alpha in response to HSV-1 exposure. Additionally, although TLR2-/- mice showed no enhanced susceptibility to intranasal infection with HSV-1, MyD88-/- mice were highly susceptible to infection and displayed viral migration to the brain, severe neuropathological signs of encephalitis, and 100% mortality by day 10 after infection. Together, our results suggest that innate resistance to HSV-1 is mediated by MyD88 and may rely on activation of multiple TLRs.     

Fast-track hysterectomy: a randomised, controlled study

Objective

To investigate if intrathecally administered morphine combined with a low-dose mode of total intravenous anaesthesia (TIVA) accelerates recovery after abdominal surgery as compared, to patient-controlled analgesia (PCA) combined with anaesthesia, based on volatile anaesthetics.

Study design

Fifty-three patients who were hysterectomised abdominally were randomised to TIVA or PCA. Their per- and post-operative course was strictly monitored and their pain score was evaluated with a visual analogue scale at repeated time intervals.

Results

Patients with TIVA had a significantly shorter stay on the post-operative ward, 180 (105-330) min, compared with the PCA group, 237 (120-1140) min (p < 0.01). The start of peroral fluid also differed significantly between groups, 4 h (2-6) for TIVA versus 5 h (2-24) for the PCA group (p < 0.01). The removal of the indwelling catheter took place significantly earlier in the TIVA group, 9 h (5-23) versus 22 h (17-24) in the PCA group (p < 0.0001). There was significantly less post-operative nausea in the TIVA group compared with the PCA group on the first post-operative day (p < 0.01). The length of stay was shorter, 2 days (1-3) compared with 3 days (1-6) for the TIVA group versus PCA (p < 0.001). There was no difference in complications between groups. One patient in each group was re-admitted to hospital because of a vaginal cuff infection.

Conclusion

The TIVA per- and post-operative care was an advantage over PCA in most respects.