The first case of osteoma in the false vocal fold

Arthroscopic treatment of intra-articular osteoid osteoma in the bicipital groove. A case report

INTRODUCTION AND IMPORTANCE

Rare presence of intra-articular osteoid osteoma may be difficult to diagnose due to the lack of typical radiographic features and clinical appearance similar to other articular pathologies. Additionally traditional treatment choices for osteoid osteoma may not suit the given environment of the shoulder joint area.

CASE PRESENTATION

We presented a 50-year-old male with a prolonged history of anterior shoulder pain and shoulder stiffness after physical activity. Intra-articular joint pathology was suspected after initial clinical and radiographic assessment. Magnetic resonance imaging revealed an osteoid osteoma in the humeral bicipital groove.

CLINICAL DISCUSSION

The surgical goal is to resect the benign bony tumour. Though the established treatment by open surgery or radiological minimally invasive techniques may not be optimal since pathologies in the shoulder joint cannot be addressed without the risk of damage to articular structures and increased complications. In this case to avoid joint incision site morbidity and address adjacent pathology arthroscopic removal of the tumour with refixation of the biceps longus tendon was carried out. At follow up of 12 months post-surgery physical activity did not provoke stiffness and resting pain has subsided.

CONCLUSION

Arthroscopic intra-articular osteoma resection in shoulder joint was optimal to address adjacent osteoma induced pathology, achieve great visualization, reduce incision site complication rates and achieve good results. Additional synovectomy during arthroscopic treatment can be performed, due to concomitant synovitis causing joint stiffness in most reported intra-articular OO cases.

Ectopic Laryngeal Ossification after Bone Morphogenetic Protein-2

We report two cases of ectopic bone formation in the head and neck following treatment with recombinant human bone morphogenetic protein-2 (rhBMP-2). Surgical pathologic data, laryngoscopy imaging, CT imaging, and patient medical history were obtained. First, we report osseous metaplasia in the vocal fold in a 67-year-old male following mandibular dental implants with rhBMP-2; second, a case of severe bony overgrowth of the larynx and fusion to the anterior cervical spine (ACS) in a 73-year-old male following multiple anterior cervical discectomies and fusions with rhBMP-2. Ectopic bone formation following rhBMP-2 has been previously reported. Adverse events like local swelling and edema leading to dysphagia and even airway obstruction after cervical spine application of rhBMP-2 have also been widely reported. Due to the uncommon nature of abnormal bony growth in soft tissue areas of the head and neck and the previously documented adverse effects of rhBMP-2 use, especially in the cervical spine, we consider the two unusual case presentations of ectopic bony formation highly likely to be linked with rhBMP-2. We urge awareness of the adverse effects caused by rhBMP-2, and urge caution in dosing.

Osteoma of the pharynx that developed from the hyoid bone

This paper reports on apparently the first case of a pharyngeal osteoma that developed from the hyoid bone. An 84-year-old man's, presenting symptom was a slight throat pain. Endoscopic examination revealed a huge mass occluding the pharyngeal space. CT scan of the neck showed a large osseous mass adjacent to the hyoid bone. Transoral resection with tracheostomy was performed. Histopathologically, the tumor consisted of mature lamellar bone without a fibrous component. For two years postoperatively, the patient has been free from throat symptoms and signs of recurrence. Osteomas are benign, slow-growing tumors. They rarely develop symptoms or cause functional disturbance. We performed total resection to avoid further functional disturbance as the osteoma was huge. To the best of our knowledge, this is the first report on an osteoma that occupied the pharyngeal space and developed from the hyoid bone.

Bone marrow osteoma of the tibia: A case report

In this study, an unusual case of osteoma is presented, whereby a bone marrow osteoma was identified in the tibia. No previous cases of bone marrow osteoma have been reported. In this case, an eight-year-old male presented with discontinuous discomfort in the right distal calf for six months. Radiological examination and computed tomography revealed a radiopaque lesion within the affected bone. A technetium-99m bone scan revealed focally increased uptake in the same region. Together, these observations prior to surgery indicated that the patient may suffer from bone disease. Subsequently, a surgical excision was performed and the biopsy specimen was identified as bone marrow osteoma. Following surgery, the symptoms were eradicated and the prognosis was positive during the 24-month follow-up period. Bone marrow osteoma should be considered when a patient suffers from discontinuous and unexplained limb discomfort.

Acute airway obstruction secondary to vocal fold heterotopic ossification

A 29-year old man of Eritrean origin presented with acute stridor and respiratory distress on a background 1 year history of progressive breathing difficulty and worsening inspiratory stridor. Fibreoptic laryngoscopy revealed an indeterminate swelling of the left vocal fold leaving no clear airway visible. The patient refused surgical tracheostomy. Microlaryngoscopy revealed a hard, calcified mass arising from the left cord preventing intubation. Histological analysis after excision revealed features consistent with heterotopic ossification. At 4 months repeat microlaryngoscopy was performed revealing normal appearance of the larynx and subglottis. Heterotopic ossification in the larynx is a very rare condition that presents a diagnostic and therapeutic challenge. In the first documented case in the larynx, we describe how the disease caused life threatening airway obstruction, but was managed in a way that led to preservation of laryngeal function and complete resolution of the condition.