PATTERN OF A PRIMARY B-CELL LYMPHOMA IN ULNAR NERVE: INTRANEURAL OR EXTRANEURAL

Primary lymphomas of peripheral nerves (PLPNs) are extremely rare and most commonly reported in lumbar nerves and have been found in only five cases in the upper extremities. We describe two patterns of presentation focusing on clinical, radiological, and pathological findings of two patients affected by primary multifocal lymphoma of the ulnar nerve without systemic involvement or other medical conditions. We report a case of extraneural lymphoma in a 72-years-old (patient #1) and a case of intraneural lymphoma in a 45-years old woman (Patient #2). Magnetic resonance imaging and ultrasound findings were similar to Peripheral Nerve Sheath Tumors (PNST). Surgical exploration and excision were performed. Morpho pathological results revealed in both cases a diffuse large B-cell non-Hodgkin lymphoma. In patient #1, the disease relapsed after only 4 months with brachial plexus involvement. The patient died about 10 months after the onset of symptoms. Patient #2 did not have post-surgical sensory or motor deficit and follow up at 6 years did not show recurrence or any other localizations. PLPN is a rare and challenging condition and is frequently misdiagnosed. PLPNs could have an intraneural or an extraneural pattern. As peripheral neuropathy may be caused by a nervous involvement by a lymphoma, in patients with atypical lesions, a complete preoperative imaging should be acquired.

Treatment of erosive pustular dermatosis of the scalp: our experience and review of unconventional topical drugs

BACKGROUND

Erosive pustular dermatosis of the scalp (EPDS) is a rare inflammatory disorder of elderly individuals, characterized by relapsing pustular and eroded lesions of the scalp, which may lead to scarring alopecia. Treatment is challenging and classically based on topical and/or oral corticosteroids.

CASE REPORT

From 2008 to 2022, we treated fifteen cases of EPDS. We used mainly topical and systemic steroids with good results. Nevertheless, several non-steroidal topical drugs have been described in literature for the treatment of EPDS. We have carried out a brief review of these treatments.

CONCLUSIONS

Topical calcineurin inhibitors represent a valuable alternative to steroids to avoid skin atrophy. Emerging evidence about other topical treatments, such as calcipotriol, dapsone, zinc oxide, together with photodynamic therapy, are evaluated in our review.