Sarcoma (Ewing/Rhabdo)
Patients requiring surgical intervention for circumcision include infants over 3 months of age or weighing more than 13 pounds, who cannot safely undergo office circumcision. Additionally, patients with isolated chordee without hypospadias benefit from operative circumcision to release adhesions and straighten the penis. Conversely, elective circumcision in infants under 3 months should not require general anesthesia due to anesthetic safety concerns.
Diagnosis of soft tissue sarcomas (rhabdo and non-rhabdo) involves imaging and tissue sampling. The workup includes MRI and either incisional or core biopsy. Histological grade is critical in non-rhabdomyosarcoma soft tissue sarcomas for treatment decisions. For regional disease assessment, sentinel node biopsy is performed because clinically negative nodes may harbor occult disease; 40–50% of biopsied nodes are positive, and positive nodes carry worse prognosis and require radiation therapy.
Todd Ponsky discussed surgical decision-making for non-rhabdomyosarcoma soft tissue sarcomas. He presented a study comparing outcomes between patients who had unplanned excision of lesions later found to be non-rhabdomyosarcoma followed by re-excision versus those with planned workup and excision. The study involved 40 patients referred after innocuous lesion removal that returned as non-rhabdomyosarcoma. Ponsky concluded that since there is no outcome difference between planned and unplanned excision, it may be acceptable with low index of suspicion to excise the lesion and perform re-excision if it returns as non-rhabdomyosarcoma.
- Sentinel node biopsy is required for trunk/extremity rhabdo; 40–50% are positive, managed with radiation not completion dissection.
- Unplanned sarcoma excision yields 45.7% residual tumor but no survival difference versus planned resection; re-excise rather than accept primary morbidity.
- Ewing stage is paramount: localized 80% survival, metastatic 20%. Circulating tumor DNA at diagnosis predicts ~50% event-free survival in localized disease.
- Surgical resection preferred for Ewing local control when feasible; definitive RT doubles local failure risk but appropriate for high-morbidity sites.
- Solitary pulmonary Ewing relapse: 73% three-year survival with metastasectomy ± whole-lung RT versus 40% for multiple nodules—aggressive local control warranted.
When doctors find a lump or mass in a child, they need to figure out what it is. Sometimes these turn out to be sarcomas—cancers that grow in soft tissues (like muscle) or bones. Two types that affect children are Ewing sarcoma and rhabdomyosarcoma . Ewing sarcoma usually starts in bones but can also appear in soft tissue, and it's quite rare in children of East Asian or African ancestry . Rhabdomyosarcoma is the most common soft tissue cancer in children, and where it grows matters a lot—tumors in the belly, pelvis, or behind the belly have worse outcomes than those near the eye . If your child needs a biopsy, doctors can often use a needle guided by imaging rather than surgery, which works well and is safer . Treatment usually includes chemotherapy, and sometimes surgery or radiation to remove or shrink the tumor . The doctors will check whether cancer has spread to lymph nodes or lungs, because that affects the treatment plan and what to expect .