Gorham syndrome is a rare disorder that is characterized by local osseous invasion and
surrounding soft tissues by an angiomatous mass, eventually causing lysis of the affected bone. …

Erdheim-Chester disease (ECD) is a rare form of histiocytosis of unknown origin characterized
by tissue infiltration by lipid-laden histiocytes. Typically, the diaphyseal and metaphyseal …

• Microscopic fingers of epidermoid cancer can extend submucosally 1 to 3 cm from grossly
discernible borders of upper aerodigestive tract cancers. These fingers are best detected by …

Discussion Condensing osteitis of the clavicle seems to represent a hypenostotic response
to mechanical stress at the sternoclavicular articulation[i]. Six previous cases of this entity …

A previously healthy 45-year-old man presented with a painful, enlarging mass along the
medial aspect of the left knee associated with dysesthesia in the distribution of the infrapatellar …

A 21-year old Mexican woman complained of a 2-year history of intermittent pain in her left
hindfoot that was exacerbated by weight bearing. Conservative therapy prescribed by a local …

Epithelioid angiomatosis, originally described as a cutaneous vascular disorder in patients
with the acquired immunodeficiency syndrome (AIDS), is believed to be a manifestation of …

Many significant benign and malignant nonepithelial tumors and stromal tumor-like lesions
arise in the prostate gland. Although such lesions are rare, their recognition by the …

Spinal enostoses are regarded as rare; they have been reported as present in approximately
1% of all spines. We have identified several patients with spinal enostoses in the thoracic …

Although linear bands of increased radiodensity have been described in the tubular bones
of children, similar but less often reported structures are frequent in the osteopenic skeleton …