Disabled Girl Is Found Dead, Amid Signs of Malnutrition
5-year-old girl who had cerebral palsy is found dead in her Bronx apartment, and preliminary report by chief medical examiner's office indicates that her tiny 17-pound body shows signs of acute malnutrition; law enforcement officials say that final autopsy report will be needed before they determine whether to seek criminal charges against mother, Ebony Carzan, 24, in death of her daughter Ahsianea; investigators say that woman's three other children appear healthy, but that apartment is filthy shambles, and that there is no food in refrigerator; photo of Ahsianea Carzan (M)