title: Medullary sponge kidney and isolated hemihyperplasia.
abstract: The term hemihyperplasia refers to an enlargement of body parts beyond the normal asymmetry. Hemihyperplasia can be isolated or associated with various well-described malformation syndromes. Medullary sponge kidney (MSK) has been described with isolated and syndromic hemihyperplasia; the actual prevalence is not known The hemi hypertrophy can be so subtle that it may be easily overlooked. MSK need not be limited to the side of hemihyperplasia - most often it is bilateral. Around 33 cases has been reported from different parts of the world of which 15 cases are isolated hemi hyperplasia (IHH), the remaining occurring in the context of various malformation syndromes So far only one case has been reported from India. We report a case of IHH involving right side of the body, recurrent renal stones, incomplete distal renal tubular acidosis hypercalciuria and imaging showing bilateral MSKs.
authors.affiliation: Department of Nephrology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: P S
authors.initials: PS
authors.lastname: Priyamvada
authors.affiliation: Department of Nephrology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: S
authors.initials: S
authors.lastname: Parameswaran
authors.affiliation: Department of Nephrology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: M
authors.initials: M
authors.lastname: Sandeep
authors.affiliation: Department of Nephrology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: V
authors.initials: V
authors.lastname: Shankar
authors.affiliation: Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: R P
authors.initials: RP
authors.lastname: Swaminathan
keywords: Hemihyperplasia; medullary sponge kidney; nephrolithiasis
references.citation: Br J Radiol. 1988 Sep;61(729):851-3
references.pmid: 3052686
references.citation: BMC Med Genet. 2004 Feb 02;5:1
references.pmid: 15040809
references.citation: J Am Soc Nephrol. 1996 Aug;7(8):1123-30
references.pmid: 8866402
references.citation: Kidney Int. 2013 Feb;83(2):272-7
references.pmid: 23223172
references.citation: Am J Kidney Dis. 2007 Jul;50(1):146-50
references.pmid: 17591535
references.citation: Am J Roentgenol Radium Ther Nucl Med. 1972 Dec;116(4):773-7
references.pmid: 4643273
references.citation: Eur J Radiol. 1991 Mar-Apr;12(2):104-7
references.pmid: 2036995
references.citation: Kidney Int. 2006 Feb;69(4):663-70
references.pmid: 16395272
references.citation: Kidney Int. 1984 Feb;25(2):453-9
references.pmid: 6727141
references.citation: Nephrol Dial Transplant. 2009 Sep;24(9):2734-8
references.pmid: 19364879
references.citation: J Med Genet. 2006 Sep;43(9):705-15
references.pmid: 16690728