Clinical case reportA 32-year-old male presented with hematuria. Ultrasound demonstrated multiple renal cysts and the initial diagnosis was polycystic kidney disease. However, the cysts enlarged during a surveillance period of one year, leading to computed tomography imaging demonstrating a locally advanced right renal tumor, and two tumors in the left kidney (Figure 1). Further investigation revealed capillary retinal angiomas and hemangiomas of the brain and spine typical of VHL disease, and he was diagnosed with a de novo, germline nonsense mutation in exon 3 of the VHL gene. At the age of 33, the patient underwent a radical right nephrectomy; histopathological examination confirmed a single stage 3, Fuhrman grade 3 ccRCC (pT3aN0M0). Six months later, there was progression in the left kidney and he was treated with partial left nephrectomy to remove both tumors. Both were stage 1 ccRCCs with a maximum Fuhrman grade of 2 (pT1aN0M0). At the time of this report, the patient remains in complete remission.
PatientID: None
KindredID: 1
Case: M, 32Y0M, Ethnicity Unknown
DiseaseAssertion: VHL
FamilyInfo: N/A
CasePresentingHPOs: HP:0000790, HP:0009711, HP:0000107, HP:0009713, HP:0010797, HP:0006770 (hematuria, retinal capillary hemangioma, renal cyst, spinal hemangioblastoma, hemangioblastoma, clear cell renal cell carcinoma)
CaseHPOFreeText: N/A
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
CasePreviousTesting: N/A
PreviouslyPublished: N/A
SupplementalData: N/A
Variant: p.R120*(c.358A>T)
LegacyVariant: N/A
CaseProblemVariantFreeText: N/A
ClinVarID: N/A
CAID: CA351753732 http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/allele?hgvsOrDescriptor=NM_000551.3%3Ac.358A%3ET
gnomAD: N/A
VariantEvidence: All tumor regions also displayed 3p LOH.
MutationType: stop_gained
CivicName: R120*(c.358A>T)
MultipleGeneVariants: Somatic, VHL, not described