Osteoid osteoma with cartilage formation of the distal phalanx in the toe

[Difficulties in diagnosing an osteoid osteoma of the big toe : A case report with review of the literature]

BACKGROUND

Osteoid osteomas belong to the benign osseous neoplasia and can occur on the entire skeleton. The prolonged diagnosis of an osteoid osteoma of the great toe prompted us to prepare a case report with a literature review to identify possible sources of error and to contribute to a more expeditious diagnosis and therapy.

LITERATURE

Currently, only two case reports on osteoid osteomas of the toes are known in the German literature. Internationally, however, a large number of cases have been described, which, when viewed as a whole, present a homogeneous picture. A very clear accumulation of osteoid osteomas at the distal phalanx of the great toe suggests a possible post-traumatic aetiology. The typical NSAID-sensitive night pain is clinically unambiguous and should make one think of an osteoid osteoma at any site on the body. The symptom of macrodactyly, which is unique to the toes, is striking and may provide a helpful clue to establishing the diagnosis. The median time from symptom onset to correct diagnosis was 12 months. One possible reason for this prolonged diagnosis is the often atypical and ambiguous imaging. Surgical therapy is the method of choice for osteoid osteomas of the toes and should always be supplemented by histopathologic examination.

Osteoid osteoma of the proximal phalanx of the hallux: a case report of a challenging diagnosis

Osteoid osteoma is a benign bone lesion that accounts for approximately 10% to 12% of all benign bone tumors. More than 80% of lesions occur in patients between 5 to 25 years old; males are more commonly affected with a ratio of 3:1. The foot is rarely involved: its involvement is less than 4% in the foot and of 1.7% in the metatarsals. In this paper we discuss the case of a 27-years-old woman with a 12 months follow-up, presented with an osteoid osteoma of the proximal phalanx of the great toe that underwent an en-bloc excision of the lesion and subsequent filling with cancellous autograft from the ipsilateral calcaneus. (www.actabiomedica.it)

Osteoid osteoma of the great toe mimicking osteomyelitis: a case report and review of the literature

Osteoid osteomas are well-known benign tumors, seen generally in long bones. When seen in phalanxes or toes, they can cause a diagnostic dilemma. A young male presented to us with complaints of enlargement of the great toe and severe pain. He had had an ingrown toe-nail operation before, and this situation caused a diagnostic dilemma. In this case report, we emphasize that osteoid osteomas can cause diagnostic dilemmas and it should be kept in mind as a differential diagnosis.

Osteoid osteoma of the great toe

Osteoid osteoma is a relatively common osteoblastic lesion of benign skeletal neoplasms and occurs most commonly in the cortex of long bones, especially the femur and the tibia. Radiological characteristics are a nidus that appears as a small, relatively radiolucent zone within an area of extensive reactive sclerosis. Clinically, the lesion presents with increasing pain, is worse at night, and is relived by nonsteroidal anti-inflammatory drugs (NSAIDs). Osteoid osteomas involving the phalanges of the toes are uncommon, and its accurate preoperative diagnosis is difficult due to the unique clinical and radiological features. The features in the phalanx of the toe are soft tissue swelling and a nidus frequently located in the cancellous without osteosclerosis. This article presents a case of a 22-year-old man with osteoid osteoma in his distal phalanx of the hallux. A needle biopsy of his great toe revealed a small number of bacteria, so he was initially treated for osteomyelitis but with unsatisfactory results. The particular characteristics of clinical and imaging findings supported a diagnosis of osteoid osteoma in the distal phalanx of the hallux. After surgical removal of the tumor, his symptoms resolved. The pathological examination confirmed the suspected diagnosis. In a patient with chronic foot pain that changes to become nocturnal and disappears with NSAID administration, it is important to include osteoid osteoma as a differential diagnosis. A detailed assessment of both clinical and radiological features can lead to the correct diagnosis, which must be confirmed with histopathological examination to ensure adequate excision.

Osteoid osteoma of the great toe: A case report

Osteoid osteoma of the great toe is an uncommon finding and usually treated with radiofrequency ablation. We present a case that is more appropriately treated with surgical excision.