Bilateral choanal atresia is a rare disorder characterized by bilateral obstruction of the posterior end of the nasal cavity. It can be present in isolation or associated with multiple disorders such as coloboma, heart defect, choanal atresia, retarded growth, genital hypoplasia, ear abnormalities (CHARGE) syndrome. Because congenital bilateral choanal atresia presents as respiratory distress at birth, immediate diagnosis and adequate treatment is required. Traditionally, using stents was a part of the postoperative treatment to provide a low rate of restenosis but recently it is controversial. Currently nasal endoscopic approach is mainly used with or without stenting. We report a case of CHARGE syndrome with bilateral choanal atresia treated by transnasal endoscopic approach without stenting.
CHARGE Syndrome ; Choanal Atresia* ; Coloboma ; Diagnosis ; Ear ; Heart ; Nasal Cavity ; Parturition ; Stents*

Treatment-related myelodysplastic syndrome (t-MDS) and acute myelogenous leukemia (t-AML) are now well established as complications of cytotoxic chemotherapy. We experienced a 28-yr-old female patient who developed t-MDS/t-AML with characteristic chromosomal abnormalities including 11q23 chromosomal rearrangement following high-dose chemotherapy with autologous stem cell transplantation (ASCT) for non-Hodgkin's lymphoma. The patient was admitted with bulky abdominal masses of B cell lineage non-Hodgkin's lymphoma. After 2 cycles of systemic chemotherapy of the Vanderbilt regimen, the patient underwent ASCT with high dose chemotherapy of the BEAC regimen. She also received radiation of 48 Gy for the residual periportal lymphadenopathy. The initial cytogenetic analysis of the infused mononuclear cells revealed a normal karyotype. Twenty two months after the ASCT, pancytopenia was noted and her bone marrow aspirate showed dysplastic hemopoiesis with myeloblasts up to 12% of nonerythroid nucleated cells. The patient was diagnosed as t-MDS (refractory anemia with an excess of blasts). Cytogenetic analysis showed complex chromosomal abnormalities including 11q23 rearrangement, which is frequently found in topoisomerase II inhibitor-related hematologic malignancies. Four months later, it was noted that the t-MDS had evolved into an overt t-AML. Cytogenetic analysis showed an evolving pattern with more complex abnormalities. The patient was treated with combination che-motherapy, but her leukemic cells were resistant to the therapy.
Adult ; Antineoplastic Agents, Phytogenic/adverse effects ; Antineoplastic Combined Chemotherapy Protocols/*adverse effects ; B-Lymphocytes/cytology ; Bone Marrow Cells/pathology ; Carmustine/*adverse effects ; Chromosome Aberrations ; Chromosomes, Human, Pair 11 ; Combined Modality Therapy/adverse effects ; Cyclophosphamide/*adverse effects ; Cytarabine/*adverse effects ; Etoposide/*adverse effects ; Female ; Gene Rearrangement ; Hematopoietic Stem Cell Transplantation/*adverse effects ; Humans ; Leukemia, Myeloid, Acute/*etiology/genetics ; Lymphoma, Non-Hodgkin/*therapy ; Myelodysplastic Syndromes/*etiology/genetics ; Neoplasms, Second Primary/*etiology ; Pelvis ; Pregnancy ; Pregnancy Complications, Neoplastic/*therapy ; Transplantation, Autologous