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Purpose of this retrospective study was (1) to evaluate overall survival and survival to local recurrence of patients with unifocal and multifocal tumor and (2) to evaluate survival to local recurrence after intralesional or wide surgery.We reviewed 62 patients with epithelioid hemangioendothelioma of bone, treated from 1985 to 2010. Histological sections and immunohistochemistry were evaluated. Tumor presented as unifocal in 49 patients and as multifocal in 13.Mean follow‐up was 9 years. Five patients (10%) with unifocal tumor progressed to multifocal. Overall survival was 92% at 10 years. Survival with unifocal tumor was significantly higher than survival with multifocal tumor. Survival to local recurrence was 76% at 10 years, significantly higher after wide resection than after intralesional surgery, while there was no statistical difference comparing unifocal and multifocal tumor. At multivariate analysis both variables showed no statistically significance.Wide surgical excision reduces the risk of local recurrence, but functional results and morbidity need to be considered individually when defining surgical indications. Due to the risk of radiation‐induced sarcomas, radiation therapy should be reserved to those cases not amenable to wide surgery or when lesions are seated locations difficult to treat.

Retrospective case series.(1) To analyze clinical and radiographical characteristics, treatment, and outcome in patients with sacral osteoblastoma, (2) to evaluate progression-free survival and local recurrence rate, and (3) to identify prognostic factors.Osteoblastoma is a rare tumor that has been reported to affect the sacrum from 7% to 17%. Symptoms are various and the diagnosis is often delayed.From 1980 to 2010, 18 patients with sacral osteoblastoma (16 males and 2 females) were treated at Rizzoli Institute. Lesion involved S1 (2 cases), S1–S2 (3 cases), S2 (1 case), S2–S3 (1 case), S2–S4 (1 case), S3 (2 cases), S3–S4 (5 cases), S4 (1 case), and almost the entire sacrum in 2 cases. According to Enneking classifi cation for benign bone tumors, 13 (72%) were diagnosed at stage 2 and 5 (28%) at stage 3. Mean tumor volume was 64 cm 3 (range, 2–441 cm 3 ). Nine patients had preoperative magnetic resonance imaging. Five patients had a previous inadequate intralesional surgery elsewhere. Treatment consisted in intralesional surgery (16 cases), intralesional surgery and radiotherapy (1 case), and wide resection (1 case). Local adjuvants used were phenol (7 patients), cryocoagulation with “iceball” technique (1 case). Embolizations were performed in 7 patients.At a mean of 8.4 years (range, 1-28 yr), 15 patients (83%) remained continuously disease free, whereas 3 patients had local recurrence (17%). Progression-free survival was 87% at 5 years and 74% at 10 years. No statistical difference was found between patients who received or not local adjuvants (P = 1.254), older or younger than 20 years (P = 0.970), at stage 2 or 3 (P = 0.826), evaluated preoperatively with or without magnetic resonance imaging (P = 0.160), primarily treated versus patients with previous intralesional surgery elsewhere (P = 0.131).In our series, curettage was successful in most of the patients. Local adjuvants did not seem to reduce the risk of local recurrence when combined with intralesional s

Studies for patients with pelvic chondrosarcomas are limited. This study determines the outcome of patients with pelvic chondrosarcomas, and whether there is any association with tumors' grade, type, stage, margins and pelvic location.