{"uid":"cap_Tpc3lSCT503d_6gDyMN8F","slug":"kutikov-2009-r-e-n-a-l-nephrometry-score-calculator-9e1425b7","name":"Kutikov 2009 R.E.N.A.L. Nephrometry Score Calculator","description":"Kutikov 2009 R.E.N.A.L. nephrometry. Caller-assigned radius le_4 1 / gt_4_lt_7 2 / ge_7 3 (cm); exophytic ge_50 1 / lt_50 2 / entirely_endophytic 3; nearness ge_7 1 / gt_4_lt_7 2 / le_4 3 (mm); location entirely_polar 1 / crosses_polar 2 / gt_50_midline_or_between 3. Anterior a|p|x and hilar suffix h are descriptors, not points. Sum 4-12. No published complexity bands. Not PADUA. Not STONE nephrolithometry. magent does not read CT. Not a medical device. Not a nephrectomy order.","url":"https://api.magentlab.com/api/calc/renal_nephrometry","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["radius","exophytic","nearness","anterior","location","hilar"],"properties":{"hilar":{"type":"boolean","description":"Caller-assigned hilar suffix (Kutikov 2009). true means the mass abuts the main renal artery or vein (suffix h). Boolean, not points. magent does not read CT."},"radius":{"enum":["le_4","gt_4_lt_7","ge_7"],"type":"string","description":"Caller-assigned maximal diameter in cm (Kutikov 2009 R, radius). le_4 (≤4 cm) scores 1; gt_4_lt_7 (>4 but <7 cm) scores 2; ge_7 (≥7 cm) scores 3. magent does not measure diameter or read CT."},"anterior":{"enum":["a","p","x"],"type":"string","description":"Caller-assigned anterior/posterior descriptor (Kutikov 2009 A). a (anterior), p (posterior), or x (indeterminate). 0 points; echoed as anterior. magent does not read CT."},"location":{"enum":["entirely_polar","crosses_polar","gt_50_midline_or_between"],"type":"string","description":"Caller-assigned location relative to polar lines (Kutikov 2009 L). entirely_polar (entirely above the upper polar line or entirely below the lower polar line) scores 1; crosses_polar (mass crosses a polar line) scores 2; gt_50_midline_or_between (>50% of the mass is across a polar line, or the mass crosses the axial renal midline, or the mass is entirely between the polar lines) scores 3. magent does not read CT."},"nearness":{"enum":["ge_7","gt_4_lt_7","le_4"],"type":"string","description":"Caller-assigned nearness of the deepest portion of the mass to the collecting system or sinus in mm (Kutikov 2009 N). ge_7 (≥7 mm) scores 1; gt_4_lt_7 (>4 but <7 mm) scores 2; le_4 (≤4 mm) scores 3. magent does not measure nearness or read CT."},"exophytic":{"enum":["ge_50","lt_50","entirely_endophytic"],"type":"string","description":"Caller-assigned exophytic/endophytic properties (Kutikov 2009 E). ge_50 (≥50% exophytic) scores 1; lt_50 (<50% exophytic) scores 2; entirely_endophytic (completely endophytic) scores 3. magent does not read CT."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_h5OkV6qfGEVSZQUcbKLBb","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the R.E.N.A.L. nephrometry score (sum 4–12) from five caller-assigned kidney mass descriptors per the Kutikov 2009 scoring system","exampleAgentPrompt":"Score this renal mass using the Kutikov R.E.N.A.L. nephrometry system: the radius is between 4 and 7 cm, it's less than 50% exophytic, it's within 4 mm of the collecting system, located anteriorly, it crosses a polar line, and it abuts the main renal vein (hilar).","exampleUseCases":[{"title":"Pre-op complexity scoring for partial nephrectomy","prompt":"I have a kidney tumor that's 6 cm in maximal diameter, less than 50% exophytic, the deepest part is about 3 mm from the collecting system, it's posterior, entirely between the polar lines, and it doesn't touch the main vessels — can you give me the R.E.N.A.L. nephrometry score?"},{"title":"Radiology report structured data enrichment","prompt":"A renal mass on the right kidney measures 8 cm (so ≥7 cm), is entirely endophytic, sits ≤4 mm from the sinus, is indeterminate anterior/posterior, crosses the axial renal midline, and abuts the main renal artery — compute the R.E.N.A.L. nephrometry score for the report."},{"title":"Research dataset nephrometry scoring","prompt":"For this study case: tumor radius ≤4 cm, ≥50% exophytic, ≥7 mm from the collecting system, anterior location, entirely above the upper polar line, no hilar involvement — what's the Kutikov nephrometry score?"}],"resultDescription":"Returns the integer R.E.N.A.L. nephrometry sum (4–12), individual component scores for each dimension (R, E, N, A, L), the echoed anterior descriptor (a/p/x), and the hilar suffix flag. Does not provide complexity band classifications or surgical recommendations.","failureModes":["Missing required query parameters returns a validation error","Invalid enum values for radius, exophytic, nearness, anterior, or location return a 400-level error","Hilar parameter missing or non-boolean returns an error","Network timeout or service unavailability returns a 5xx error","Payment failure via x402 protocol prevents the call from completing"],"whenToPreferThis":"Choose this endpoint when you need a programmatic, structured computation of the Kutikov 2009 R.E.N.A.L. nephrometry score from already-interpreted imaging descriptors. It is ideal for automating radiology workflow enrichment, populating clinical research databases, or embedding nephrometry scoring into a urology decision-support agent. It is NOT a substitute for radiologist interpretation of CT images, does not implement PADUA or STONE scoring, and is not a medical device.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:51:47.791Z","isFirstParty":false}