UNASSIGNED: Congenital Generalized Lipodystrophy (CGL) is a rare autosomal recessive disease caused by mutations in genes responsible for the formation and development of adipocytes. Bone abnormalities are described. However, there is a scarcity of data.
UNASSIGNED: To describe bone characteristics in a large CGL1 and 2 case series.
UNASSIGNED: Cross-sectional study that assessed bone radiological features of CGL patients of a reference hospital in Fortaleza (CE), Brazil. Patients underwent clinical and bone mineral metabolism evaluation, radiographs of the axial and appendicular skeleton and bone mineral density (BMD) assessment by DEXA (dual energy X-ray absorptiometry).
UNASSIGNED: Nineteen patients were included, fourteen were CGL1 and 5, CGL2. Median age was 20 years (8-42) and 58% were women. Median BMI and percentage of body fat were, respectively, 21 Kg/m² (16-24), and 10.5% (7.6-15). The median leptin concentration was 1 ng/mL (0.1-3.3). Diabetes mellitus and dyslipidemia were present in 79% and 63% of patients, respectively. Median calcium and phosphate were normal in almost all patients (95%). Median parathyroid hormone and 25-OH-vitamin D were 23 pg/mL (7-75) and 28 ng/mL (18-43). Osteolytic lesions, osteosclerosis and pseudo-osteopoikylosis, were present in 74%, 42% and 32% of patients, respectively. Lytic lesions were found predominantly in the extremities of long bones, bilaterally and symmetrically, spine was spared. Osteosclerosis was present in axial and appendicular skeleton. Pseudo-osteopoikilosis was found symmetrically in epiphyses of femur and humerus, in addition to the pelvis. BMD Z-score greater than +2.5 SD was observed in 13 patients (68.4%). BMD was higher in CGL1 compared to CGL2 in lumbar spine and total body in adults. No associations were found between high BMD and HOMA-IR (p=0.686), DM (p=0.750), osteosclerosis (p=0.127) or pseudo-osteopoikilosis (p=0.342), and, between pain and bone lesions. Fractures were found in 3 patients.
UNASSIGNED: Bone manifestations are prevalent, heterogeneous, and silent in CGL1 and CGL2. Osteolytic lesions are the most common, followed by osteosclerosis and pseudo-osteopoikilosis. Bone mass is high in most cases. There was no pain complaint related to bone lesions. Thus, systematic assessment of bone manifestations in CGL is essential. Studies are needed to better understand its pathogenesis and clinical consequences.

暂无摘要。

Aneurysmal bone cyst (ABC) is a rare and usually painful condition, representing about 1% of all bone tumors. A geographical lytic, expansile, and septated radiological pattern, with fluid-fluid levels on MRI, is classically displayed. ABC can be a primary bone lesion (70% of patients) or can arise in an underlying condition and is subsequently named \"ABC-like changes\" (30%). ABC-like changes are more frequently encountered in skeletal segments affected by chondroblastoma, fibrous dysplasia, giant cell tumor, osteoblastoma, non-ossifying fibroma, and osteosarcoma. In this article, we describe the first case of ABC-like changes developed in association with an ultra-rare sclerosing bone disease: melorheostosis. Melorheostosis is characterized by recognizable patterns on radiological studies with a pathological increased bone density and a cortical thickening within the periosteal or endosteal space, usually with a \"dripping candle wax\" appearance. More rarely, other different radiological patterns can be observed, such as \"osteopatia striata-like,\" \"osteoma-like,\" \"myositis ossificans-like,\" and mixed patterns. Pain and limb hypotrophy are the most common clinical manifestations. We report the case of a Caucasian male with a clinic-radiological diagnosis of melorheostosis (with epiphyseal osteopoikilosis) since the age of twelve. At the age of nineteen, he suffered from increased pain in the proximal right thigh, and the radiological control revealed an expansive septated lesion at the right proximal femoral bone. The diagnosis of ABC-like changes developed in melorheostosis was obtained after CT-guided bone biopsy and confirmed by open-incisional biopsy.

BACKGROUND: Osteopoikilosis, also referred to as disseminated condensing osteopathy, spotted bone disease, or osteopecilia, is a rare bone disorder. The case presented here showcases multiple disc lesions in the spine, extensive multifocal skin lesions, and positive test results for dermatomyositis and multifocal enthesopathy, accompanied by neurological symptoms. This manifestation represents a novel variant of the disease.
METHODS: Our patient is a 46-year-old mosque Kurdish servant presenting with complaints of pain in the right leg, lower back, right hand, and neck. Additionally, the patient has been experiencing redness in the right buttock and ipsilateral thigh, as well as gradually expanding and stiffening skin lesions on the left shin for the past 3 weeks. Painful neck movements and a positive Lasegue test were also observed in the right leg. The patient reports pain in the right buttock accompanied by a substantial erythematous area with induration measuring 8 × 15 cm, as well as an erythematous and maculopapular lesion measuring 6 × 18 cm on the left shin.
CONCLUSIONS: Our patient is a 46-year-old man presenting with complaints of skin lesions and pain in the lower back, pelvis, neck, and limbs. The X-ray reveals shoulder, pelvis, knee, and ankle involvement, while spinal involvement is observed in the neck and lumbar region. Furthermore, the bone scan indicates extensive enthesopathy in various regions, a unique manifestation not previously reported in similar cases.

Buschke-Ollendorff syndrome (BOS) is a rare, usually benign, autosomal dominant genetic disease affecting about 0.005% globally. BOS commonly manifests with asymptomatic connective tissue nevi, sometimes with sclerotic bone lesions like osteopoikilosis or melorheostosis. However, BOS may develop severe, symptomatic complications that require surgical intervention. Here we report a 9-year-8-month girl presenting with multiple nonpruritic, nonpainful skin plaques scattered around the trunk, buttocks, and bilateral legs. She had a history of right varus foot with inadequate plantar flexion. Upon visiting, obvious leg length discrepancy (LLD) was noted. Lesional biopsy revealed increased fibroblasts within dermal collagen bundles. Verhoeff-van Gieson stain revealed scattered foci of thickened elastic fibers between collagen fibers, especially in the mid-dermis. Radiographic examination of the lower extremities showed multiple small, round-to-oval shaped, radiopaque spots on the pelvic bones, femurs, tibiae, and both feet. Hyperostosis along the long axis with \"dripping candle wax\" appearance was characteristic of osteopoikilosis and melorheostosis. Genetic analysis showed heterozygous point mutation in exon 1 of LEMD3 gene (c.1323C>A, p.Y441X), confirming diagnosis of BOS. Sequential and epiphyseodesis were performed to correct LLD with a favorable outcome at 2-year follow-up. BOS associated with severe bone abnormalities is rare, but orthopedic surgical intervention can provide satisfactory outcome.

Histiocytic disorders pose significant diagnostic and management challenges for the clinicians due to diverse clinical manifestations and often non-specific histopathologic findings. Herein, we report the tumor board experience from the first-of-its-kind Histiocytosis Working Group (HWG).
The HWG was established in June 2017 and consists of experts from 10 subspecialties that discuss cases in a multidisciplinary format. We present the outcome of tumor board case discussions during the first 2 years since its inception (June 2017-June 2019).
Forty cases with a suspected histiocytic disorder were reviewed at HWG during this time period. Average number of subspecialties involved in HWG case discussion was 5 (range, 2-9). Histiocytosis Working Group tumor board recommendations led to significant changes in the care of 24 (60%) patients. These included change in diagnosis (n = 11, 27%) and change in treatment (n = 13, 33%).
Our report highlights the feasibility of a multidisciplinary tumor board and its impact on outcomes of patients with histiocytic disorders.

暂无摘要。

Osteopoikilosis (OPK) is one of the rare genetic musculoskeletal, non-inflammatory disorders that we should increase awareness toward. We report a case of a patient diagnosed with psoriatic arthritis with incidental imaging findings of lesions suggestive of osteopoikilosis.

UNASSIGNED: Diagnosis of sclerosing and hyperostotic bone disorders (SHS) is challenging. The correct and early identification of SHS can have therapeutic, prognostic and, in case of genetic SHS with regard to the risk of inheritance, advisory consequences.
UNASSIGNED: For diagnosis, radiographic examinations and supplementary computed tomography (CT) and magnetic resonance imaging (MRI) are used. These are of indicative nature. Definitive diagnosis is usually made by genetic differentiation.
UNASSIGNED: In combination with the age of the affected person and the location of the osseous changes the characteristic image criteria are important. These are summarized in groups in this overview.
UNASSIGNED: Projection radiography in two planes is the imaging modality of choice. CT and MR can detect additional differential diagnostic criteria and should be indicated when needed.
UNASSIGNED: KLINISCHES/METHODISCHES PROBLEM: Die bildgebende Diagnostik von sklerosierenden hyperostotischen Skelettveränderungen (SHS) ist eine Herausforderung. Die korrekte und frühzeitige Identifizierung von SHS kann therapeutische, prognostische und, vorrangig bei genetisch bedingten SHS hinsichtlich des Vererbungsrisikos, beratende Konsequenzen haben.
UNASSIGNED: Zur Abklärung werden projektionsradiographische Untersuchungen sowie ergänzend Computertomographie (CT) und Magnetresonanztomographie (MRT) eingesetzt. Diese haben hinweisenden Charakter. Die definitive Diagnosestellung erfolgt regelhaft durch genetische Differenzierungen.
UNASSIGNED: Entscheidend sind die charakteristischen Bildkriterien. Diese sind in der vorliegenden Übersicht in Gruppen zusammengefasst und dienen in Kombination mit dem Alter der Betroffenen und der Lokalisation der ossären Veränderungen als differenzialdiagnostische Entscheidungshilfe. EMPFEHLUNG FüR DIE PRAXIS: Grundsätzlich ist die Projektionsradiographie in 2 Ebenen das bildgebende Verfahren der Wahl. CT und MRT können differenzialdiagnostische Zusatzkriterien erfassen und sollten fakultativ indiziert werden.

BACKGROUND: Osteopoikilosis (OPK) is an extremely rare benign condition with sclerosing bony dysplasia and multiple benign enostoses. OPK is usually asymptomatic and is typically an incidental finding on imaging studies for unrelated conditions.
METHODS: We presented a case of OPK in a 7-year-old female with hallux valgus, shortening and deformity of second and third metatarsals in the right foot. These abnormalities were observed on clinical findings with X-ray imaging, and osteopoikilosjs was confirmed by histopathology. The deformities were treated with surgical intervention, and the patient\'s condition was followed for 3 months until the patient walked and removed the gypsum.
CONCLUSIONS: OP is a rare, benign disease that rarely causes bony deformities. It is diagnosed clinically and radiographically, so that the deformities are treated only surgically. Follow-up is necessary to assess the movement of the limb.
CONCLUSIONS: The distinctive thing that can be added to the medical literature is that it is possible for osteopoikilosis to cause bone deformities at an early age.