UNASSIGNED: Stenosing tenosynovitis is a condition characterized by the inflammation and constriction of the tendons within a fibro-osseous tunnel.
UNASSIGNED: We present a case of a 38-year-old man who presented with hallux saltans, a rare manifestation of this condition which was successfully treated with intralesional steroid injection. The patient experienced significant relief from pain and improved function following the procedure.
UNASSIGNED: This case highlights the importance of considering stenosing tenosynovitis as a potential cause of hallux saltans and the efficacy of non-surgical interventions in its management.

BACKGROUND: The most frequent complication after esophageal atresia repair remains anastomotic stricture formation. The initial treatment is endoscopic dilatation. Intralesional steroid injection (ISI) might be an effective adjuvant treatment in case of recurrent strictures. In this series we present our initial experience with this intervention.
METHODS: Data on primary surgery, stricture treatment, postoperative complications, outcome and growth were retrospectively collected from electronic patient records. Findings were analyzed by descriptive statistics and mixed model analysis.
RESULTS: Between 2014 and 2017, ISI was performed for severe recurrent anastomotic strictures in six patients (median age at injection 12.4 (2.1-34.7) months) after a median of 6 (2-20) dilatations. In five patients ISI was successful and the stenosis was cleared. No postoperative complications were reported, especially none related to acute adrenal suppression. Comparing the year before with the year after ISI, a significant positive change for weight (r = 0.70, p = 0.003) was calculated versus a negative change for height (r = -0.87, p = 0.003).
CONCLUSIONS: We found ISI to be an effective adjuvant treatment to recurrent anastomotic stricture dilatation after esophageal atresia repair, without postoperative complications or symptoms of adrenal suppression. It remains important, however, to monitor growth effects. Further evaluation is required in a large prospective study.
METHODS: Treatment study, Level IV (case series).

We describe a rare case of solitary bone cyst involving the vertebral body of L4.
To the best of the authors\' knowledge, only 15 cases of solitary bone cysts involving the spine have been reported previously. All the reported cases were treated surgically, including resection and curettage with or without bone grafting. In the current case, treatment was with steroid injection alone.
A cystic lesion involving the vertebral body of L4 was identified in a 16-year-old girl with persistent low back pain of 2 years\' duration. According to the radiological characteristics of the lesion, a diagnosis of solitary bone cyst was suspected. The patient underwent surgical intervention with percutaneous steroid injection alone since there was no evidence of thinned cortex or pathological fracture. The patient was discharged 2 days after this intervention with resolution of the low back pain.
At the final follow-up 7 months after treatment, the patient was asymptomatic and the beginning of bony healing was evident.
Herein, we reported an extremely rare case of solitary bone cyst involving the body of the fourth lumbar vertebra. Local steroid injection should be considered as a minimally invasive intervention for a solitary bone cyst involving the spinal column with no evidence of thinned cortex or pathological fracture.