(a) (i) Enumerate the causes of radio-opacities on a plain abdominal radiograph.

(ii) Enlist the causes of hydronephrosis in adults.

(iii) How would you investigate an adult patient with unilateral right-sided hydronephrosis?

(iv) State in brief t

Question

(a) (i) Enumerate the causes of radio-opacities on a plain abdominal radiograph.

(ii) Enlist the causes of hydronephrosis in adults.

(iii) How would you investigate an adult patient with unilateral right-sided hydronephrosis?

(iv) State in brief the management of PUJ obstruction. (5+5+5+5=20 marks)

(b) (i) What are essential amino acids? List any six.

(ii) When is a protein said to be 'biologically complete'? What does the term 'supplementary action of proteins' mean? Explain this concept by citing an example from daily life. (5+10=15 marks)

(c) (i) What are the methods for screening of cancer cervix?

(ii) What are the risk factors for cervical cancer?

(iii) Enlist the preventive strategies for cancer cervix. (5+5+5=15 marks)

UPSC Answer Check · Accepted Answer

The directive 'enumerate' demands systematic listing with brief elaboration. Allocate approximately 40% effort to part (a) radiology (20 marks), 30% to part (b) biochemistry (15 marks), and 30% to part (c) gynecology (15 marks). Structure as: brief introduction → systematic enumeration for each sub-part with 1-2 lines per point → concluding summary emphasizing clinical integration across radiology, biochemistry, and public health.
- Part (a)(i): Causes of radio-opacities on plain AXR—renal/ureteric calculi, calcified lymph nodes, vascular calcifications, gallstones (if calcified), foreign bodies, calcified masses
- Part (a)(ii)-(iv): Causes of adult hydronephrosis (obstructive vs non-obstructive), stepwise investigation protocol (USG → CT-IVU → nuclear renogram), and PUJ obstruction management (endopyelotomy vs laparoscopic pyeloplasty vs open Anderson-Hynes)
- Part (b)(i)-(ii): Essential amino acids definition and six examples (PVT TIM HALL mnemonic), biological completeness criteria (all essential amino acids in adequate proportion), supplementary action with Indian dietary example (cereal-pulse combination like rice-dal)
- Part (c)(i)-(iii): Cervical cancer screening methods (Pap smear, VIA, HPV DNA testing), risk factors (HPV 16/18, early marriage, multiparity, smoking, HIV), preventive strategies (HPV vaccination, screening, safe sex practices, WHO 90-70-90 targets)
- Integration point: Link PUJ obstruction management to renal preservation principles; connect protein supplementation to Indian public health programs (ICDS, midday meal); tie cervical cancer prevention to National Cancer Control Programme

Dimension	Weight	Max marks	Excellent	Average	Poor
Concept correctness	22%	11	Precise definitions across all parts: correctly classifies radio-opacities by anatomical location and composition; accurately defines essential amino acids and biological completeness with correct biochemical basis; correctly identifies HPV as causative agent for cervical cancer with serotype specificity	Generally correct definitions with minor errors—lists radio-opacities without classification, defines essential amino acids but misses limiting amino acid concept, knows HPV causes cancer but confuses screening methods	Major conceptual errors—confuses radiolucent with radio-opaque, cannot define essential vs non-essential amino acids, attributes cervical cancer to non-infectious causes only
Clinical correlation	20%	10	Strong clinical integration: for (a) correlates hydronephrosis imaging findings with functional impairment (split renal function); for (b) applies protein quality to Indian malnutrition contexts (PEM, kwashiorkor); for (c) links screening age protocols to natural history of cervical carcinogenesis	Superficial clinical links—mentions 'clinical significance' without elaboration, generic statements about protein importance, lists screening without age-specific recommendations	No clinical correlation—purely theoretical answers, no mention of patient presentation, complications, or real-world application
Diagram / pathway	18%	9	Includes labeled diagram for PUJ obstruction anatomy/correction, flowchart for hydronephrosis investigation algorithm, and/or schematic of cervical carcinogenesis pathway; clear, neat, and directly referenced in text	Mentions need for diagrams but provides rough sketches or incomplete labels; describes pathways in words without visual representation	No diagrams despite clear opportunities; purely descriptive without visual learning aids
Differential / staging	18%	9	Systematic differentials: for (a)(i) distinguishes true vs false radio-opacities; for (a)(iii) presents stepwise investigation with justification at each level; for (c) includes FIGO staging mention and differential diagnosis of cervical lesions (CIN vs invasive)	Limited differential approach—lists without prioritization, investigation sequence without rationale, screening methods without comparison of sensitivity/specificity	No differential or staging—single answer approach, no investigation hierarchy, confuses screening with diagnostic methods
Management / public-health angle	22%	11	Comprehensive management: for (a)(iv) compares endoscopic, laparoscopic, and open surgical options with indications; for (b) discusses National Nutrition Mission relevance; for (c) details HPV vaccination schedule (Gardasil/Cervarix), VIA screening in resource-limited settings, and WHO elimination strategy	Basic management outlines—names procedures without comparison, generic nutrition advice, lists prevention without program implementation details	Incomplete or incorrect management—misses minimally invasive options, no public health perspective, outdated screening recommendations

Q7

Directive word: Enumerate

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