Publications by authors named "Raymond Traweek"

Introduction: Soft tissue sarcomas (STSs) are rare and diverse primary malignant tumors that comprise approximately 1% of all malignancies. Misdiagnoses and unplanned excisions of STSs are common due to the tumor's rarity, leading to secondary tumor bed excisions (TBEs). Reconstructive outcomes for TBEs remain poorly understood, prompting this study to address the knowledge gap and inform preoperative discussions.

View Article and Find Full Text PDF

Background: The reconstructive ladder relies mostly on defect size and depth to determine reconstructive technique, however, in actuality, many more variables ultimately inform reconstructive decision making, especially regarding extremity soft tissue sarcoma (eSTS) defects. The purpose of this study was to describe eSTS patients who will most optimally benefit from an advanced method of reconstruction (defined as a pedicled regional flap or free flap) and to create a simple risk assessment scale that can be employed in clinical practice.

Study Design: A single-institution retrospective cohort study examined patients undergoing resection of soft tissue sarcoma affecting the upper or lower extremities between 2016 and 2021.

View Article and Find Full Text PDF

Background: Limb-sparing resections of thigh soft tissue sarcomas (STSs) can result in adverse outcomes. Identifying preoperative predictors for wound healing complications, tumor recurrence, and mortality is crucial for informed reconstructive decision-making. We hypothesized that preoperative measurements of thigh and tumor dimensions could serve as reliable indicators for postoperative complications, recurrence, and death.

View Article and Find Full Text PDF

Background: Although social vulnerability has been associated with worse postoperative and oncologic outcomes in other cancer types, these effects have not been characterized in patients with soft tissue sarcoma. This study evaluated the association of social vulnerability and oncologic outcomes.

Methods: The authors conducted a single-institution cohort study of adult patients with primary and locally recurrent extremity or truncal soft tissue sarcoma undergoing resection between January 2016 and December 2021.

View Article and Find Full Text PDF
Article Synopsis
  • A randomized phase 2 trial was conducted to evaluate the effectiveness of neoadjuvant immune checkpoint blockade (ICB) therapies (nivolumab and nivolumab/ipilimumab) in patients with resectable retroperitoneal DDLPS and extremity/truncal UPS.
  • The primary endpoint of pathologic response showed a median hyalinization of 8.8% in DDLPS and 89% in UPS, with secondary endpoints focusing on immune changes and survival rates over time.
  • Results indicated that lower pre-treatment regulatory T cell densities correlated with better pathological outcomes, and that neoadjuvant ICB led to significant immune changes and benefits, particularly in patients with UPS when combined with radiation therapy
View Article and Find Full Text PDF

Purpose: Reconstructing defects after resecting soft-tissue sarcoma (STS) can be challenging. The aim of this retrospective study was to analyze the reconstructive outcomes and identify the potential risk factors in patients undergoing reconstruction after excision of lower-extremity STS.

Methods: Patients with lower-extremity STS were included.

View Article and Find Full Text PDF

Nonobstetrical surgical emergencies can occur throughout pregnancy but are often difficult to diagnose due to the physiologic and anatomical changes that occur during pregnancy. Medical providers should have insight into these changes and be familiar with options for the diagnosis and management of common nonobstetrical surgical emergencies, such as appendicitis, cholecystitis, and small bowel obstruction. Surgeons should also be aware of obstetrical emergencies, such as ectopic pregnancy and severe vaginal bleeding, which may be life threatening to mother and the fetus.

View Article and Find Full Text PDF
Article Synopsis
  • - Leiomyosarcoma (LMS) is a rare but aggressive soft tissue sarcoma commonly found in the extremities, retroperitoneum, or uterus, with a high risk of metastasis and poor prognosis, especially in uterine cases.
  • - Genetically, LMS is complex with low mutational burden and specific alterations that can lead to resistance against current immunotherapy treatments.
  • - The tumor microenvironment in LMS is rich in immune cells, which may serve as potential biomarkers for developing new, effective immune therapies targeted at this cancer type.
View Article and Find Full Text PDF

Dedifferentiated liposarcoma (DDLPS) is an aggressive adipogenic cancer with poor prognosis. DDLPS tumors are only modestly sensitive to chemotherapy and radiation, and there is a need for more effective therapies. Genetically, DDLPS is characterized by a low tumor mutational burden and frequent chromosomal structural abnormalities including amplification of the 12q13-15 chromosomal region and the gene, which are defining features of DDLPS.

View Article and Find Full Text PDF
Article Synopsis
  • Undifferentiated pleomorphic sarcoma (UPS) shows significant immune infiltration, with immune checkpoint inhibitors benefiting around 20% of patients, leading to an investigation of the tumor's immune microenvironment and its impact on patient outcomes.
  • Researchers performed immunohistochemistry on 105 surgically removed UPS samples, assessing various immune markers and correlations related to overall and disease-free survival using statistical methods.
  • Key findings revealed that certain immune markers (like CD39 and CD73) were linked to treatment responsiveness and survival rates, with significant variations seen in primary vs. recurrent and metastatic tumors, highlighting the complexity of immune interactions in UPS.
View Article and Find Full Text PDF

Background: Patients with unplanned excision (UPE) of trunk and extremity soft tissue sarcoma (STS) present a significant management challenge for sarcoma specialists. Oncologic re-resection has been considered standard practice after UPE with positive or uncertain margins. A strategy of active surveillance or "watch and wait" has been suggested as a safe alternative to routine re-excision.

View Article and Find Full Text PDF

Palbociclib has been evaluated in early phase trials for well-differentiated liposarcoma (WDLPS) and dedifferentiated liposarcoma (DDLPS) patients, with reported median progression-free survival (PFS) of 18 weeks. Here, we report on real-world use and surgical outcomes associated with palbociclib treatment. We retrospectively reviewed 61 consecutive patients with retroperitoneal WDLPS (n = 14) or DDLPS (n = 47) treated with palbociclib monotherapy between 1 March 2016 and 28 February 2021 at The University of Texas MD Anderson Cancer Center.

View Article and Find Full Text PDF

Cancer immunotherapy can result in lasting tumor regression, but predictive biomarkers of treatment response remain ill-defined. Here, we performed single-cell proteomics, transcriptomics, and genomics on matched untreated and IL2 injected metastases from patients with melanoma. Lesions that completely regressed following intralesional IL2 harbored increased fractions and densities of nonproliferating CD8+ T cells lacking expression of PD-1, LAG-3, and TIM-3 (PD-1-LAG-3-TIM-3-).

View Article and Find Full Text PDF

Purpose: Alternative or ectopic reservoir placement has recently gained popularity among prosthetic surgeons to avoid injury to pelvic structures during inflatable penile prosthesis implantation. However, the true incidence of complications associated with these new techniques remains under studied. We performed a 5-year multicenter, retrospective study with the aim of evaluating complications related to alternative reservoir placement.

View Article and Find Full Text PDF