Case Reports in Urology

Case Reports in Urology / 2021 / Article

Case Report | Open Access

Volume 2021 |Article ID 6654437 | https://doi.org/10.1155/2021/6654437

Mehdi Chennoufi, Ibrahim Boukhannous, Mohamed Mokhtari, Anouar El Moudane, Mohamed Irzi, Abdelghani Ouraghi, Issam Jandou, Achraf Miry, Ali Barki, "A Giant Solitary Adrenal Plasmacytoma in a Patient with HIV: A Rare Case Report and Review of the Literature", Case Reports in Urology, vol. 2021, Article ID 6654437, 6 pages, 2021. https://doi.org/10.1155/2021/6654437

A Giant Solitary Adrenal Plasmacytoma in a Patient with HIV: A Rare Case Report and Review of the Literature

Academic Editor: Claudio Simeone
Received14 Dec 2020
Revised23 Jan 2021
Accepted29 Jan 2021
Published03 Feb 2021

Abstract

Solitary extramedullary plasmacytoma (EMP) involving the adrenal gland is an extremely rare malignancy. We report a case of a solitary adrenal plasmacytoma in an HIV-positive 50-year-old woman on antiretroviral therapy who presented with a rapidly progressing lumbar left masse. A CT scan objectified a locally advanced left adrenal mass measuring 135mm long axis. A biopsy was taken, and the histopathology with the immunohistochemical study objectified an adrenal gland plasmacytoma. The skeletal survey and the sternal suction biopsy did not show any abnormalities. The diagnosis of a solitary EMP of the adrenal gland was made. There are only 10 cases of solitary adrenal plasmacytoma with only one case associated with an HIV-positive patient reported in the literature. Therefore, this paper is aimed at presenting the second case of an HIV-positive patient diagnosed with solitary adrenal plasmacytoma.

1. Introduction

Extramedullary plasmacytoma (EMP) is a proliferation of monoclonal plasmatic soft tissue, without bone marrow involvement in patients with no clinical evidence of multiple myeloma (MM) [1]. It represents less than 4% of all plasma cell malignancies, of which 15% progress to MM and 80% are developing in the upper respiratory system and the head [2]. Any extraosseous organ can also be affected. Solitary adrenal gland plasmacytoma is extremely rare in an HIV-positive patient [3], unlike plasmablastic lymphomas [4]. It has been proven that the solitary EMP is touching this category of patients with younger age, atypical clinical course, and higher aggressivity. The diagnosis is a histopathological dilemma, while its management is still controversial. In the literature, there is no evidence of the superiority of laparoscopic retroperitoneal adrenalectomy compared with laparoscopic transperitoneal adrenalectomy in regard to the duration of surgery, operative blood loss, and conversion to open surgery, while late morbidity might be reduced following the retroperitoneal approach for small lesions (less than 6 cm to 7 cm) [5]. This case is proof that the plasma cell malignancies associated with a human immunodeficiency virus (HIV) could have an unusual localization, an unpredictable evolution, and a poor prognosis.

2. Case Report

A 50-year-old female patient who had been diagnosed with HIV 6 months previously under highly active antiretroviral therapy (HAART) was admitted for abdominal pain and mass syndrome of the left flank evolving for a month with a weight loss of 12 kg, in whom the clinical examination found a conscious patient, normotensive, with tenderness in the left flank, absence of clinical Cushing syndrome, or hyperandrogenism; the rest of the clinical examination is unremarkable.

The thoracic abdominopelvic scan (Figure 1) objectified a voluminous retroperitoneal tumor process centered on the left adrenal compartment badly limited irregular, containing zones of necrosis, measuring mm 10 HU of density, which infiltrates the great gastric curvature, the body and the tail of the pancreas without a dividing line, and the splenic vein which is laminated. Outside comes at intimate contact with a spleen includes the upper pole of the left kidney. Posteriorly, it arrives at the contact of the vertebral bodies D10, 11, and 12 and invades the left diaphragmatic pillar, the psoas muscle, and the square of the left lumbar region. Thus, it encompasses the celiac trunk and the renal artery over their entire circumference and the abdominal aorta over a ° comes into contact with the superior mesenteric artery, and the common hepatic artery without a sign of invasion comes into contact with the inferior vena cava with a border of separation in places, associated with perilesional lymphadenopathy the largest 19 mm, left inferior lobar parenchymal nodule of 7 mm, and left supraclavicular lymphadenopathy the largest 13 mm.

Biological exploration revealed a negative endogenous hypersecretion of cortisol, negative urinary methoxylated metabolites, and no hypersecretion of androgens.

Creatinine was 5.56 mg/L, urea 0.27 g/L, natremia 139 mEq/L, kalmia 3.6 mEq/L, calcemia 100 mg/L, hemoglobin 12.3 g/dL, white blood cells 3110/mm3, and platelets 198,000/mm3, and the liver function test was unremarkable.

The patient was placed on level 2 analgesic treatment. A percutaneous biopsy of the mass was taken, showing a proliferation of atypical plasma cells. No intact tissue of the adrenal gland was found. Immunohistochemistry study revealed a negative expression of CD3 and CD20 excluding a plasmablastic lymphoma and a positive expression of CD138 and lambda light chains confirming the diagnosis of adrenal plasmacytoma (Figure 2).

Further serum investigation by immunoelectrophoresis of Bence-Jones proteins was made showing a high level of lambda light chains at 45.8 mg/L (normal level between 4 and 25.1 mg/L) with the normal level of kappa light chains at 6.2 mg/L (normal level between 5.2 and 22.17 mg/L). X-rays of the skeleton did not show lesions. A sternal suction biopsy did not show any plasmacytic infiltration. The diagnosis of a solitary adrenal plasmacytoma was established.

The patient was transferred to the oncology for chemotherapy and radiotherapy. But unfortunately, she died after 3 months of following up.

3. Discussion

Four categories of plasma cell malignancies exist: MM, plasma cell leukemia, solitary plasmacytoma of the bone, and EMP [4]. This latter is a rare malignant monoclonal plasma cell proliferation in patients with no clinical signs of MM. It represents less than 4% of all plasma cell malignancies [6] with 15% usually developing to MM [4]. 80% arise in the head, the oral cavity, and the upper respiratory tract, while 20% occur in the thyroid, breast, gastrointestinal tract, spleen, retroperitoneum, kidney, bladder, and testes. EMP is very rarely involving the adrenal gland [7].

Several retrospective studies revealed that the incidence of monoclonal gammopathy was from 3.8% to 26% in HIV-positive patients [8, 9] vs. 3.2% in the general population older than 50 years old [10]. The mechanisms of the high risk of plasma cell disorders in HIV patients are still poorly elaborated. However, two mechanisms were proposed to explain this situation: antigen stimulation and immunodeficiency. HIV viral antigens could stimulate the proliferation of B cells and the secretion of an immunoglobulin without the interference of T cells, most often due to chronic antigenic stimulation. Also, HIV can cause T cell dysfunction thus activating B cells without viral antigen stimulation [11].

The diagnosis is established on the findings of a plasma cell tumor in the exerted specimen or biopsy, the immunohistochemistry study, the immunological analysis of serum and urine, the absence of multiple myeloma on bone marrow suction biopsy, and the absence of skeletal lesions [3].

There are only 10 cases reported in the literature (Table 1). Most cases were reported in the Asian population. The age ranges from 26 to 77 years with a medium at 61 years. Sex ratio was 2.3 male/1 female. Our patient was a 50-year-old female. The right adrenal gland was more affected with three cases of bilateral tumors, and only one case of left adrenal plasmacytoma. The mean maximum dimension was 5.8 cm (range, 3.5 cm to 10 cm). Our case was the largest adrenal gland plasmacytoma reported to date with 13.5 cm in the long axis. Fujikata et al. [12] reported high levels of noradrenaline in the endocrinologic function with an elevation of monoclonal IgG-lambda at serum immunoelectrophoresis, contrasted with a monoclonality of IgG-kappa at immunohistochemical study, from where the diagnosis of extramedullary plasmacytoma independent of simultaneous benign M proteinemia was established. Ahmed et al. [13] reported bilateral regression of the adrenal tumors with calcification and fibrosis after two consecutive autologous hematopoietic stem cell transplantation. Cao et al. [14] reported the first case of extramedullary plasmacytoma involving the adrenal gland in an HIV-positive 35-year-old male patient. Of the six cases that have reported follow-up data on adrenal EMP, the follow-up ranging was from 12 to 72 months, with no recurrences.


StudyYearsCountryAgeGenderSideTumor size (cm)FunctionTreatmentHIV+Serum protein electrophoresisKappaLambdaFollow-up (month)

Kahara [15]2001Japan52MaleRight4NoLCANo+NoSpecimen12
Asahi [16]2001Japan52MaleRight4NoLCA+C +RNo+NoSpecimen
Fujikata [12]2002Japan77MaleRight10YesOA+nephrectomy+R+SpecimenBlood12
Rogers [17]2004USA75FemaleRight3.5NoLCA+RNoNoSpecimenNP
Li [18]2007China64FemaleBilateral6 right/4leftNoOANoNoSpecimenNP
Ahmed [13]2009Saudi Arabia47MaleBilateral8 right/8 leftNoC+autologous hematopoietic stem cell transplantationNo+Specimen + urineNo47
Blanco [19]2011Spain76FemaleLeft6NoAdrenalectomy+RNoNPNPNP40
Cao [20]2014China26MaleRight4.5NoLCANo+SpecimenNo72
Cao [14]2016China35MaleRight3.5NoLCAYes+NoSpecimen24
Townend/Graus [21]2016Australia57MaleBilateral5.5 right/9.5 leftNoBilateral OANo+Specimen+serum+urineNoNP
Chennoufi2020Morocco50FemaleLeft13.5NoC+RYes+NoSpecimen+blood3

LCA: laparoscopic adrenalectomy; C: chemotherapy; R: radiotherapy; OA: open adrenalectomy; NP: no report.

Most HIV-positive patients are excluded from clinical trials. There are no guidelines for managing these specific patients. HAART is essential in the treatment of plasma cell disorders in HIV-positive patients. Yet, it is unclear how long the patients need to be on it before and during the course of chemotherapy. The role of RT is not clear unless there is a suspicion of residual disease [11]. The autologous hematopoietic stem cell transplantation is a possible alternative that needs more long-term studies.

4. Conclusion

Solitary EMP involving the adrenal gland in patients with HIV is extremely uncommon. The diagnosis is established on clinical, radiological, immunohistochemical, and histological data. The management is still controversial. More case reports and long-term-studies are needed to establish well-supported guidelines for these specific patients.

Conflicts of Interest

None of the contributing authors have any conflict of interest, including specific financial interests or relationships and affiliations relevant to the subject matter or materials discussed in the manuscript.

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Copyright © 2021 Mehdi Chennoufi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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