Rhabdomyosarcoma or Fibrosarcoma? A Case of Large Ulcerated and Necrotic Lesion on the Forearm of a Newborn.

Congenital infantile fibrosarcoma (CIFS) is a rare malignant soft tissue tumor. The incidence of fibrosarcoma is estimated to be 0.3 per 100 000 population per year, and it accounts for less than 1% of all soft tissue sarcomas. We present a case of a 7-day-old newborn with a large ulcerated and necrotic lesion on the left forearm, which was initially misdiagnosed as rhabdomyosarcoma. Magnetic resonance imaging (MRI) revealed a soft tissue mass with cystic components affecting the forearm and distal humerus muscles. Fine-needle biopsy was performed and initially diagnosed as rhabdomyosarcoma but later confirmed as low-grade fibrosarcoma with positive immunostaining for vimentin. The patient underwent a transhumeral amputation with follow-up chemotherapy at a specialized oncology center. This case underscores the importance of interdisciplinary collaboration and specialized care in managing complex medical conditions in infants. Early detection and appropriate management of these tumors are essential for improving outcomes and reducing morbidity and mortality. Despite the rarity of this case, it serves as a reminder of the importance of considering neoplastic lesions in the differential diagnosis of soft tissue masses in newborns.

Collodion baby with ectropion in a Syrian newborn: a case report study.

Collodion baby is a rare congenital disorder and a very intense disorder in which the baby suffers from several complications, such as trans-epidermal water loss. Only ∼270 cases of collodion babies have been reported in the literature since 1892. This disease may later develop one of a spectrum of diseases including lamellar ichthyosis, which the patient may had Congenital lamellar ichthyosis with ectropion, which was clinically distinguished by the collodion baby phenotype at birth. Case presentation: The authors are reporting the first case in Syria, a 20-day-old white Syrian male newborn, vaginally delivered at 38 weeks of pregnancy, with normal conditions, and congenital lamellar ichthyosis was shown by physical examination, as parchment-like scales were covering the newborn's skin, which was starting to detach and showing the "collodion baby" appearance. Ophthalmologic examination revealed a bilateral ectropion of the upper eyelids with tarsal eversion. A treatment of Tobramycin 0.3% eye ointment was prescribed four times a day, with a viscotears liquid gel eye drops 4 times a day, and vaseline petroleum jelly to be applied three times daily. At 2-month follow-up, a significant improvement was noted. Conclusion: Ichthyosis have a wide range of disorders that involve the skin and have inherited and acquired forms. As a result, keratolytic and systemic retinoids can have significant benefits in restoring skin function.