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Cheshire cat syndrome — Clinical Guidelines

Overview

Cat-eye syndrome (CES) is a rare chromosomal disorder characterized by the presence of an extra bisatellited marker chromosome, typically involving an inverted duplication of chromosome 22 (inv dup(22)). It manifests with a variable constellation of congenital anomalies including coloboma, ear and heart malformations, renal anomalies, and hepatic dysfunction 1 3.

Diagnosis

Key Diagnostic Criteria: Presence of an extra bisatellited marker chromosome involving chromosome 22, often inv dup(22) 1 3 7.

Recommended Tests: Cytogenetic analysis, fluorescence in situ hybridization (FISH) using probes specific to 22q11 1 7 11.

Phenotypic Features: Coloboma of the iris, anal atresia, craniofacial anomalies, cardiac defects, renal anomalies, and hepatic dysfunction 1 2 3.

Management

First-Line Treatments: Address specific anomalies (e.g., surgical correction for anal stenosis, cardiac defects) 2.

Adjunctive Care: Supportive care for hepatic dysfunction, respiratory distress, and hypotonia 2.

Monitoring: Regular follow-up for developmental milestones and complications related to associated anomalies 1 2.

Special Populations

Pediatrics: Early intervention for developmental delays and surgical correction of congenital anomalies 2 3.

Comorbidities: Management of hepatic dysfunction and gastrointestinal issues like aganglionosis requires multidisciplinary care 8.

Key Recommendations

Perform cytogenetic analysis and FISH using 22q11 probes for definitive diagnosis of Cat-Eye syndrome (Evidence: Strong 1 7).

Implement multidisciplinary management addressing specific congenital anomalies and supportive care for systemic issues like hepatic dysfunction (Evidence: Moderate 2 8).

Provide early intervention and regular monitoring for developmental and health complications in pediatric patients (Evidence: Moderate 3).

References

1 Jezela-Stanek A, Dobrzańska A, Maksym-Gąsiorek D, Trzeciakowski W, Gutkowska A, Olczak-Kowalczyk D et al.. Trisomy 22pter-q12.3 presenting with hepatic dysfunction variability of cat-eye syndrome. Clinical dysmorphology 2009. link 2 Denavit TM, Malan V, Grillon C, Sanlaville D, Ardalan A, Jacquemont ML et al.. A new case of a severe clinical phenotype of the cat-eye syndrome. Genetic counseling (Geneva, Switzerland) 2004. link 3 Berends MJ, Tan-Sindhunata G, Leegte B, van Essen AJ. Phenotypic variability of Cat-Eye syndrome. Genetic counseling (Geneva, Switzerland) 2001. link 4 Rosias PR, Sijstermans JM, Theunissen PM, Pulles-Heintzberger CF, De Die-Smulders CE, Engelen JJ et al.. Phenotypic variability of the cat eye syndrome. Case report and review of the literature. Genetic counseling (Geneva, Switzerland) 2001. link 5 Tupler R, Hoeller A, Pezzolo A, Maraschio P. Maternal derivation of inv dup (22) and clinical variation in cat-eye syndrome. Annales de genetique 1994. link 6 Urioste M, Visedo G, Sanchís A, Sentís C, Villa A, Ludeña P et al.. Dynamic mosaicism involving an unstable supernumerary der(22) chromosome in cat eye syndrome. American journal of medical genetics 1994. link 7 Liehr T, Pfeiffer RA, Trautmann U. Typical and partial cat eye syndrome: identification of the marker chromosome by FISH. Clinical genetics 1992. link 8 Ward J, Sierra IA, D'Croz E. Cat eye syndrome associated with aganglionosis of the small and large intestine. Journal of medical genetics 1989. link 9 Reiss JA, Weleber RG, Brown MG, Bangs CD, Lovrien EW, Magenis RE. Tandem duplication of proximal 22q: a cause of cat-eye syndrome. American journal of medical genetics 1985. link 10 Rosenfeld W, Verma RS, Jhaveri RC. Cat-eye syndrome with unusual marker chromosome probably not chromosome 22. American journal of medical genetics 1984. link 11 Bofinger MK, Soukup SW. Cat eye syndrome. Partial trisomy 22 due to translocation in the mother. American journal of diseases of children (1960) 1977. link 12 Walknowska J, Peakman D, Weleber RG. Cytogenetic investigation of cat-eye syndrome. American journal of ophthalmology 1977. link90438-x)

Cheshire cat syndrome