A 4-year-old child was transferred to the paediatric intensive care unit with acute respiratory failure following 4 days of fever, nausea and vomiting. Chest X-ray on admission had an enlarged cardiac silhouette and transthoracic echo confirmed a large pericardial effusion. An emergent pericardiocentesis was performed at bedside which drained nearly 1000 mL of purulent fluid. Postdrainage course was complicated by acute systolic and diastolic heart failure, thrombocytopenia and acute renal failure. A chest CT and MRI were concerning for a diffuse mediastinal soft-tissue density, so the patient underwent interventional radiology-guided biopsy complicated by haemorrhage requiring mediastinal exploration and subtotal thymectomy. Histopathology revealed changes consistent with kaposiform lymphangiomatosis and MRI demonstrated involvement of the lumbar spine and right hip. Following a course of intravenous antibiotics, the patient was started on sirolimus and prednisolone and ultimately discharged home.
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http://dx.doi.org/10.1136/bcr-2021-246250 | DOI Listing |
J Pediatr Hematol Oncol
January 2025
Cook Children's Medical Center, Fort Worth, TX.
Kaposiform lymphangiomatosis (KLA) is a rare and aggressive subtype of complex lymphatic anomalies (CLA), characterized by abnormal lymphatic proliferation leading to distinct clinical manifestations. Despite the complexity of this condition, there is no established standard therapy, and treatment options such as sclerotherapy, laser therapy, and surgery remain variably effective and are limited to symptom management rather than curative. Sirolimus, an mTOR pathway inhibitor, has shown promise as a primary therapy, particularly in patients without a driver mutation.
View Article and Find Full Text PDFPediatr Blood Cancer
December 2024
Division of Pulmonary Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
Background: Kaposiform lymphangiomatosis (KLA) is a complex lymphatic anomaly associated with a somatic activating NRAS p.Q61R (NRAS) mutation. KLA is characterized by malformed lymphatic vessels that can lead to effusions and coagulopathy.
View Article and Find Full Text PDFHistopathology
December 2024
Department of Pathology, Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts, USA.
J Pediatr Adolesc Gynecol
December 2024
Department of Pediatric and Adolescent Gynecology, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), Bethesda, Maryland; Children's National Hospital, Pediatric and Adolescent Gynecology Program, Washington.
Background: Prepubertal vaginal bleeding is a common presentation for pediatric adolescent gynecologists with a broad differential diagnosis that historically may not have included complex lymphatic anomalies. However, given recent consensus criteria and imaging capabilities, this may be a condition that pediatric adolescent gynecologists see more frequently in the future.
Case: We present a case of a 5-year-old pre-pubertal girl whose only presenting symptoms of a rare complex lymphatic anomaly was copious vaginal bleeding.
Pediatr Dermatol
September 2024
Division of General Pediatrics, Section of Pediatric Dermatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
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