Foreign-body reaction to absorbable fixation devices.

While it is evident that poly-p-dioxanon is less reactive than polyglycolide, recent studies, including the case above, have shown that Orthosorb pins are not exempt from the same type of foreign-body reaction as the Biofix products.

Bizarre parosteal osteochondromatous proliferation. An unusual bone tumor.

Bizarre parosteal osteochondromatous proliferation of bone is a rare, benign bone tumor. The authors discuss two cases involving the bones of the feet, and review clinical, radiographic, and histopathologic characteristics. Awareness of this lesion is essential as bizarre parosteal osteochondromatous proliferation of bone can be mistaken for a malignancy.

Development and optimization of tissue preparative methodology for DNA content analysis of soft tissue neoplasms.

Data regarding DNA content parameters in soft tissue sarcoma is limited. Development and optimization of tissue specific preparative techniques for DNA flow cytometry was undertaken prior to routine DNA content analysis of soft tissue neoplasms; 154 soft tissue tumors were studied. Dissociation dependent differences in cellular yields, viabilities, maintenance of DNA aneuploid populations, coefficients of variation, and DNA index supported the need for these developmental studies. Fifty-six of eighty-nine patients had DNA aneuploid soft tissue sarcomas. A relationship between DNA aneuploidy and grade was seen in this series with 38% with low grade, 59% with moderate grade, and 69% with high grade tumors demonstrating DNA aneuploid populations (P < 0.005). The mean S-phase fraction for DNA diploid and aneuploid sarcomas was 7.2% and 13.3%, respectively (P < 0.001). When classified by histologic grade of the primary tumor, a greater percentage of metastatic lesions were DNA aneuploid (4 of 7 grade 2 lesions, and 15 of 16 grade 3 lesions). Decreases in cellular yields and rate of DNA aneuploidy were observed in a subgroup of patients with localized high grade sarcoma treated preoperatively, as compared to patients treated with initial surgery. Prospective correlation of DNA content parameters to prognosis and response to cytotoxic therapy are now possible and are ongoing.

DNA content parameters of paraffin-embedded soft tissue sarcomas: optimization of retrieval technique and comparison to fresh tissue.

DNA content analysis of formalin fixed paraffin embedded (FFPE) tissue permits determination of the influence of DNA content on the prognosis in cohorts of patients for whom the clinical outcome is known. Of key importance in such an analysis is the accuracy of DNA content determination. Variations in the quality of DNA histograms from FFPE tissues of different types prompted a comparative evaluation of the preparative methodology of FFPE soft tissue sarcomas for DNA flow cytometry. Following deparaffination and rehydration of fixed tissue, and prior to fluorochrome staining, tissue blocks of 15 DNA aneuploid soft tissue sarcomas were subjected to repeated experimental (time x concentration) enzyme exposures. The goal of these studies was to define the optimal tissue specific retrieval technique with the coefficient of variation, maintenance of DNA aneuploidy, and DNA index as endpoints. After optimizing the technique, the DNA content of 50 soft tissue neoplasms derived from FFPE specimens was compared to the corresponding fresh surgical tissue. The observed 14 percent error rate in the determination of DNA ploidy status suggest limited utility for FFPE tissue in prospective therapeutic trials of soft tissue sarcoma.

Fulminant hepatic failure possibly related to ciprofloxacin.

OBJECTIVE: To report a case of hepatic failure in a patient who was receiving oral ciprofloxacin. DATA SOURCES: Case reports, review articles, and relevant laboratory studies identified by MEDLINE. DATA EXTRACTION: Data were abstracted from pertinent published sources by one author and reviewed by the remaining authors. DATA SYNTHESIS: A 66-year-old man was admitted for hip arthroplasty and developed fulminant hepatic failure during oral ciprofloxacin therapy. Ciprofloxacin was started on postoperative day 13 for treatment of a urinary tract infection. Over the next three days he became confused and hypoglycemic. His prothrombin time increased to greater than 90 s. Serum aspartate aminotransferase and alanine aminotransferase concentrations were markedly elevated. The patient died on postoperative day 20. Postmortem examination of the liver revealed extensive centrilobular necrosis. A skin biopsy was consistent with a drug reaction. It is unknown whether the patient had received a quinolone compound in the past or had a history of exposure to hepatotoxins. CONCLUSIONS: It cannot be concluded that ciprofloxacin directly caused hepatic failure in this patient. It is possible that the drug evoked a hypersensitivity reaction or exacerbated a preexisting hepatotoxicity. A detailed patient history and evaluation of hepatic function should be obtained prior to initiating ciprofloxacin therapy. A nonquinolone antimicrobial may be a safer alternative for patients with hepatic dysfunction.

Spontaneous Achilles tendon rupture in a patient with systemic lupus erythematosus.

Spontaneous rupture of the Achilles tendon, which is associated with underlying systemic disease and concurrent oral corticosteroid therapy, is a relatively rare occurrence, with very few cases reported in the English medical literature to date. Patients with this affliction frequently present weeks to months after the rupture occurs because there is no succinct traumatic event. The neglected rupture renders surgical repair more difficult secondary to the retraction of the triceps surae muscle group and the concomitant increase in width of the defect that results. The authors present a case report of a patient with a neglected spontaneous rupture of the Achilles tendon who had been on oral corticosteroid therapy to treat the manifestations of systemic lupus erythematosus. A gastrocnemius recession was performed in a "V to Y" fashion to gain needed lengthening, and an end-to-end anastomosis was also performed. The plantaris tendon was then used to help reinforce the anastomosed site.

Reliability of frozen section examination in identifying poor prognostic indicators in stage I endometrial adenocarcinoma.

Management of Stage I adenocarcinoma of the uterus includes hysterectomy, bilateral salpingo-oophorectomy, and selective paraaortic and pelvic lymphadenectomy. Postoperative radiation therapy (RT) is selectively employed in patients with histologically defined poor prognostic indicators. We attempted to identify these poor prognostic indicators by frozen section (FS) at primary surgery in 55 patients with Stage I endometrial adenocarcinoma; we found an excellent correlation between the results obtained on gross examination of the uterus with selected FS and the results after extensive sampling and microscopic examination of permanent section (PS). The depth of myometrial invasion was accurately predicted in 96.5%, and histologic grade in 94.5% of these patients. Sixty-six percent of patients with occult invasion of the cervix on PS were identified on FS. Using the above criteria, we identified by FS all patients (15/55) who required adjuvant RT obviating the need for pelvic lymph node dissection. On the basis of our preliminary data, we recommend the use of careful gross examination and selective FS to identify patients requiring selective pelvic and paraaortic lymphadenectomy and adjuvant therapy, thereby eliminating the need for staging lymph node dissection with its associated morbidity and complications.

The effects of long-term androgen treatment on the ovary.

Ten patients with female gender dysphoria were treated with exogenous androgen (testosterone [T] enanthate USP) and underwent sex reassignment surgery. Histologic changes of the ovaries of this treated group were studied and compared with those of patients with polycystic ovarian syndrome (PCO) and a normal control group. Significant differences among groups were observed for thickness of the tunica albuginea (639.8 +/- 56.5 micron, 529.2 +/- 59.3 micron, and 170.1 +/- 29.8 micron in the exogenous androgens, PCO, and normal groups, respectively), basal membrane thickness (72.8 +/- 2.8 micron, 46.2 +/- 4.2 micron, and 25.2 micron), number of cystic follicles (2.0 +/- 0.4, 5.8 +/- 0.7, and 1.8 +/- 0.8), and T and luteinizing hormone concentrations. Theca cell hyperplasia was present only in the PCO group. It is concluded that exogenous androgen can thicken the tunica albuginea and basal membrane and that these histologic changes are similar to those seen in PCO ovaries under excess endogenous androgen production.

Pseudocorpus luteum insufficiency: a study of cytosol progesterone receptors in human endometrium.

This prospective, controlled study of 38 women was designed to compare the number of endometrial cytosol progesterone receptor (PRc) binding sites in infertile women with documented luteal phase defect with those of similar women without luteal phase defect. A 25% reduction in PRc binding sites was observed in women with luteal phase defect (P less than .05). Considerable overlap was noted between luteal phase defect and control groups; thus, no definite range of binding site numbers was predictive of luteal phase defect. The results of this study, therefore, suggest that an end-organ receptor defect may exist in some women with luteal phase abnormalities.

Analysis of adenocarcinoma in Barrett's esophagus utilizing a staging system.

Based on a retrospective review of nine patients with adenocarcinoma in a Barrett's esophagus and the reports of similar cases in the literature, a staging system for this malignancy was devised. A progression of changes could be identified that corresponded to the stages. These changes consisted of dysplasia progressing to carcinoma in situ and invasive malignancy with metastases. Stage III disease carried the same grim prognosis as a similar stage of squamous cell carcinoma of the esophagus. Earlier stages of adenocarcinoma of the esophagus appeared to have a better prognosis. White men with symptoms of reflux esophagitis, esophageal strictures, and/or hiatal hernias who have Barrett's esophagus extending proximal to the distal 10 cm of the esophagus appear to have a propensity to develop adenocarcinoma of the esophagus. Consideration should be given to antireflux surgery and close follow-up by periodic esophagoscopy and biopsy of the esophagus in these patients. If neoplasia is found, the thoracic esophagus should be totally removed with the stomach or left colon anastomosed to the cervical esophagus. Because of the poor prognosis of Stage III disease, postoperative chemotherapy should be considered.