Evans, C A MEN 2B syndrome should be part of the working diagnosis of constipation of the newborn. [electronic resource] - Histopathology Apr 2008 - 646-8 p. digital Publication Type: Case Reports; Letter ISSN: 1365-2559 Standard No.: 10.1111/j.1365-2559.2008.02984.x doi Subjects--Topical Terms: Acetylcholinesterase--metabolismBiopsyCarcinoma, Medullary--pathologyConstipation--diagnosisHeterozygoteHumansInfant, NewbornInfant, PrematureMultiple Endocrine Neoplasia Type 2b--diagnosisPoint MutationRectum--enzymologyThyroid Neoplasms--pathologyThyroidectomy