<b>To describe the most frequent imaging findings of ovarian tumors in pediatric patients through different imaging methods (ultrasound, computed tomography and magnetic resonance imaging), in order to help in the differential diagnosis between benign from malignant pathology.</b> Read More

Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020

Authors: Mackintosh Cecilia, Gonzalez Veronica, Funes Poblete Flavia, Vargas Maria

Keywords: Ovarian tumors

We report a case of 2-year-old female, twin, low birth weight (37 weeks, 1630 g - 3.59 lb), who was referred to our hospital to study an indurated nodular tumor involving her left leg, which extended from her pelvis to her left foot. Blood tests showed only an increase in alkaline phosphatase (862 mg/dl). Lower-limb X-ray was performed, which showed an extensive calcified mass with fibrillar pattern affecting dermis and deep connective tissue. MRI was also performed and showed an extensive signal alteration in muscle and dermis with hipointense signal in relation to heterotopic calcifications. The differential diagnoses were Albright hereditary osteodystrophy (AHO), fibrodysplasia ossificans progressiva (FOP), and progressive osseous heteroplasia (POH). AHO was ruled out because of the lack of compromise of muscle plane, and the absence of congenital malformations (such as brachydactyly, obesity, low height), hypocalcemia and hyperphosphatemia. Similarly, FOP was also ruled out since it is characterized by muscle ossification, with no dermal calcifications, and hallux malformation (also absent in this case). The diagnosis reached was POH, which is a rare genetic (autosomal dominant inheritance) disorder characterized by progressive periarticular ossification of dermis and deep connective tissues (muscles, tendons and ligaments), with no congenital malformations. The diagnosis is built upon the clinical symptoms, imaging findings and genetic study (GNAS mutation). There is no effective treatment, with frequent progression to ankylosis. Read More

Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020

Authors: Funes Poblete Flavia, Mackintosh Cecilia, Vargas Maria, Gonzalez Veronica

Keywords: heteroplasia, dermal calcification, calcified mass