Diagnosis: Superficial spreading melanoma
A 28-year-old male presented with an asymmetric, multicolored plaque on his back that had been gradually enlarging over the past six months. The lesion exhibited irregular borders and varied pigmentation, raising suspicion for a malignant process. Subsequent biopsy confirmed the diagnosis of superficial spreading melanoma.
A 28-year-old male presented with a multicolored, asymmetric plaque on his back, which had been present for six months. The patient noted that the lesion was gradually enlarging and occasionally itched. On examination, the plaque measured 4 cm, had irregular borders, and displayed multiple shades of brown, black, and some areas of pink. No lymphadenopathy was detected.Asymmetry: The lesion was asymmetrical in shape.Border irregularity: The edges of the plaque were not well-defined.Color variation: The lesion exhibited multiple colors, including brown, black, and pink.Diameter: The lesion measured over 4 cm in diameter.Itching: The patient reported intermittent itching of the lesion.
The patient reported that the lesion began as a small brown spot, which he initially attributed to a benign mole. There were no known triggers for its growth. He denied any previous treatments for the lesion. His medical history was unremarkable, and there was no family history of skin cancer. The patient worked as a landscaper and had significant sun exposure but used sunscreen sporadically.Onset: The lesion began as a small brown spot, gradually enlarging over six months.Sun exposure: The patient has a history of significant sun exposure due to outdoor work.Family history: No family history of melanoma or other skin cancers.Prior treatments: No previous treatments attempted for the lesion.Social history: The patient uses sunscreen occasionally but not consistently.
Acute / First-Line ManagementWide excisional biopsy with clear margins is the standard first-line treatment for superficial spreading melanoma. The excised lesion should have at least 1 cm of surrounding normal skin for optimal margins.Sentinel lymph node biopsy may be indicated based on tumor thickness and ulceration status, particularly if the Breslow depth exceeds 1 mm.Workup and Diagnostic ConfirmationA biopsy of the lesion confirmed the diagnosis of superficial spreading melanoma. Histopathological examination revealed atypical melanocytes and irregular nests.Staging workup may include imaging studies (CT or PET scans) if there is concern for metastasis based on clinical findings or tumor characteristics.Long-Term ManagementRegular follow-up examinations every 3-6 months for the first 2-3 years, then annually if no recurrence is noted.Education on sun protection and self-examination to monitor for new or changing lesions is crucial for patient management.Consideration of adjuvant therapy with immune checkpoint inhibitors or targeted therapies may be discussed depending on the stage and risk of recurrence.
Basal cell carcinoma: Typically presents as a pearly papule or ulcerated lesion, often with telangiectasia, and is more common in older adults.Squamous cell carcinoma: May appear as a scaly, keratotic plaque or ulcer, often in sun-exposed areas; more aggressive than basal cell carcinoma.Actinic keratosis: Presents as rough, scaly patches on sun-damaged skin, often multiple and primarily in older patients.Nevi (moles): Benign moles are generally uniform in color and shape, lacking the asymmetry and irregular borders seen in melanoma.Merkel cell carcinoma: A rare, aggressive skin cancer that presents as a painless, firm nodule, often with rapid growth.Dermatofibroma: A benign fibrous nodule that is firm, often brownish, and typically does not exhibit the color variation seen in melanoma.Psoriasis: Usually presents as well-demarcated, scaly plaques, often with a silvery scale, and is associated with other systemic symptoms.Fibrous histiocytoma: Generally presents as a firm, raised nodule that may mimic melanoma but is usually less pigmented and more uniform in color.
High-Yield PearlsABCDE criteria: Use the ABCDE (Asymmetry, Border irregularity, Color variation, Diameter >6mm, Evolving) criteria to identify suspicious lesions.Early detection: Early identification and excision of melanoma significantly improve prognosis and survival rates.Sentinel lymph node biopsy: Indicated for staging in melanoma patients with thick lesions to assess for metastasis.Sun protection: Emphasize the importance of sun protection and regular skin examinations to reduce melanoma risk.Family history: A positive family history of melanoma increases individual risk and necessitates closer surveillance.Regular skin checks and awareness of changing moles can save lives.
Tags: melanoma, superficial spreading