Correct Answer: A. Partial penectomy
Verrucous carcinoma of the penis is a low-grade, locally invasive variant of squamous cell carcinoma with excellent prognosis when caught early and without nodal involvement. The key discriminator here is the absence of inguinal lymphadenopathy, indicating no regional metastasis (Stage T1-T2, N0). In such cases, the goal is organ-preserving surgery with adequate margins while avoiding unnecessary mutilation. Partial penectomy (amputation proximal to the lesion with 5–10 mm margins) is the standard of care for tumours of the glans or distal shaft without nodal disease. This approach achieves excellent oncological control (>90% 5-year survival in early-stage disease) while preserving penile function and patient quality of life. The procedure involves transection of the corpora cavernosa and spongiosum above the tumour, with frozen section confirmation of negative margins. According to Bailey & Love and Indian urological practice guidelines, partial penectomy is preferred over total penectomy when the tumour is confined to the glans or distal third and there is no evidence of proximal involvement or nodal metastasis. Verrucous carcinoma has a much lower propensity for lymph node involvement compared to conventional SCC, making conservative surgery appropriate in N0 disease.
Why the other options are wrong
B. Topical 5-fluorouracil — 5-FU is used for carcinoma in situ (Bowen's disease) or superficial squamous lesions of the penis, not for invasive verrucous carcinoma. Topical therapy cannot achieve adequate depth of penetration or margin control in an established tumour. This is an NBE trap that confuses topical chemotherapy (appropriate for pre-malignant lesions) with invasive cancer requiring surgical excision. C. Total penectomy — Total penectomy is reserved for tumours involving the proximal shaft, corpora cavernosa, or with evidence of nodal metastasis (N1–N3 disease). In this case, the tumour is localized to the glans without nodal involvement, making total penectomy unnecessarily mutilating and not justified by oncological principles. Over-treatment is a common pitfall in early-stage penile cancer. D. CO2 laser excision — Laser excision is suitable only for very small, superficial lesions (<2 cm, Tis–T1a) or for palliative purposes. Verrucous carcinoma, even if low-grade, requires adequate surgical margins and histopathological assessment of depth of invasion. Laser cannot provide reliable margin control or allow proper staging, risking incomplete excision and recurrence.
High-Yield Facts
- Verrucous carcinoma of penis is a low-grade SCC variant with excellent prognosis (>90% 5-year survival) and low nodal metastasis rate (~10–15%), unlike conventional penile SCC.
- Partial penectomy is the standard for glans/distal shaft tumours without nodal involvement (N0); requires 5–10 mm margins and frozen section confirmation.
- Total penectomy is indicated only for proximal shaft involvement, corpora invasion, or N1–N3 disease; avoid in early-stage, distally located tumours.
- Inguinal lymphadenopathy is the strongest prognostic factor in penile cancer; its absence (N0) justifies organ-preserving surgery and avoids prophylactic inguinal lymphadenectomy.
- Topical 5-FU is reserved for Bowen's disease (CIS) and erythroplasia of Queyrat; never used for invasive carcinoma.
Mnemonics
PENILE CANCER SURGERY RULE Glans/Distal + N0 → Partial penectomy | Proximal/Shaft + N0 → Partial penectomy (higher margin) | Any + N1–N3 → Total penectomy ± inguinal lymphadenectomy. Use this to stratify by tumour location and nodal status. VERRUCOUS = INDOLENT Verrucous carcinoma = Low-grade, slow-growing, rare nodal spread → Organ-preserving surgery justified. Conventional SCC = aggressive, high nodal risk → more radical surgery. Remember: verrucous is the 'good guy' of penile cancers.
NBE Trap
NBE pairs verrucous carcinoma with topical 5-FU (option B) to trap students who conflate it with Bowen's disease or who assume all penile cancers need chemotherapy. The absence of lymphadenopathy is the key clue that surgery alone (not systemic therapy) is appropriate.
Clinical Pearl
In Indian urology practice, verrucous carcinoma of the penis is often diagnosed late due to patient embarrassment and delayed presentation. However, because it grows slowly and metastasizes rarely, even patients presenting with locally advanced disease (T3–T4, N0) can achieve good outcomes with partial penectomy alone, avoiding the psychological morbidity of total penectomy and preserving sexual and urinary function—a critical consideration in Indian cultural context.
_Reference: Bailey & Love Ch. 76 (Penile Cancer); Harrison Ch. 97 (Urological Malignancies)_