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Kasabach–Merritt syndrome (KMS) is a potentially life-threatening coagulopathy characterized by enlarging hemangioma with severe thrombocytopenia.[1] KMS. Kasabach-Merritt syndrome is characterised by the combination of rapidly growing vascular tumour, thrombocytopenia, microangiopathic haemolytic anaemia. [2] Thereafter, the association of a capillary hemangioma and thrombocytopenia was labeled Kasabach-Merritt syndrome (the name was later changed to KMP).

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It is named after Haig Haigouni Kasabach and Katharine Krom Merrittthe two pediatricians who first described the condition in Examination of the chest, cardiovascular, abdomen and central nervous systems swere normal.

Kasabach–Merritt syndrome

There are few reports of kaposiform haemangioendotheliomas without Kasabach-Merritt syndrome. A number of specialists may be involved in the care of a child with Kasabach-Merritt syndromeincluding paediatricians, dermatologists, haematologists, surgeons and radiologists.

Vincristine, interferon alpha, antifibrinolytics, radiation, embolization, and surgery are subsequent treatment options in steroid non-responders based on affordability, syndroe, and feasibility of a particular modality. Neonatal sepsis screen was positive and coagulation profile was deranged with prolonged prothrombin international normalized ratio [INR] 2. Residual lesions after Kasabach-Merritt phenomenon in 41 patients.

Last Edited November 27, Syndrpme Journal of Haematology. They usually present in young infants, less than three months of age, but have rarely been reported in kasbach children. Low platelets can be associated with other vascular tumors and malformations and this should not be classified at Kasabach-Merritt phenomenon.


Blood gas result was normal and there was no bacterial growth from blood and urine cultures. There was no history of fever, trauma, bleeding from any site, seizures, ear or eye discharge.

If the vital signs and glucose levels remain normal, the dose is incrementally doubled to a maximum of 0. These tumors are made up of abnormal endothelial cells spindle cells and also lymphatic malformation.

Treatment is administered at standard doses 1—1. Views Read Edit View history. The platelet count improved and the steroids were continued for 3 months. No past or family history of significance. Kaposiform Hemangioendothelioma with Kasabach—Merritt Syndrome — right arm treated with steroids and propranolol.

Central nervous system examination revealed lethargic child with depressed neonatal reflexes and upgoing plantars. Kaposiform haemangioendotheliomas usually regress with time but do not completely disappear. She was delivered at term following normal spontaneous vaginal delivery to non consanguineous parents. Hemangiomas are not associated with any coagulopathy or thrombocytopenia.

Kasabach-Merritt syndrome KMS is a rare disorder that can affect infants from the time of birth, or may appear later in infancy as the vascular malformation grows.

Kasabach – Merritt syndrome: A case report

A radiograph of the right arm showed no bony abnormality. Capillary hemangioma with extensive purpura: Support Center Support Center. This coagulopathy is not Kasabach-Merritt phenomenon. Kasabach-Merritt phenomenon KMP is a life-threatening consumptive coagulopathy in the presence of a rapidly enlarging vascular tumor.


J Pediatr Hematol Oncol.

Kasabach-merritt syndrome.

When these tumors with KMP are internal such as in the pleural or retroperitoneum, they can cause significant morbidity and mortality. Kaposiform hemangioendothelioma with Kasabach-Merritt syndrome: Bruising and spontaneous bleeding can also occur.

In other projects Wikimedia Commons. The antenatal scans were normal. Please review our privacy policy. If a response is achieved, the dose is reduced slowly; too rapid a reduction in dose, particularly during the proliferative phase, is often associated with a recrudescence of symptoms.

A newborn girl child was born with a large shiny swelling sybdrome the left thigh. Neurological examination revealed features of hydrocephalous and global developmental delay.

Parents also noticed progressively increasing yellowish discoloration of skin and sclera for 2 days and lethargy and decreased kasaabch acceptance for one day. He was passing urine and stools normally. If you have any concerns with your skin or its treatment, see a dermatologist for advice.

Recently, oral sirolimus which has anti-angiogenic activity has been reported to be remarkably effective in a few cases.